최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
DataON 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Edison 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0167820 (2011-06-24) |
등록번호 | US-8974567 (2015-03-10) |
발명자 / 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 | 피인용 횟수 : 1 인용 특허 : 90 |
A gas-liquid rotating coalescer includes first and second sets of one or more detent surfaces on a rotary drive member and a driven annular rotating coalescing filter element which engagingly interact in interlocking mating keyed relation to effect rotation of the coalescing filter element by the ro
A gas-liquid rotating coalescer includes first and second sets of one or more detent surfaces on a rotary drive member and a driven annular rotating coalescing filter element which engagingly interact in interlocking mating keyed relation to effect rotation of the coalescing filter element by the rotary drive member. Designated operation of the coalescer requires that the coalescing filter element include the second set of detent surfaces. A coalescing filter element missing the second set of detent surfaces will not effect the noted designated operation.
1. A gas-liquid rotating coalescer separating liquid from a gas-liquid mixture, comprising: a coalescing filter assembly comprising a housing having an inlet receiving said gas-liquid mixture, a gas outlet discharging separated gas, and a drain outlet discharging separated liquid,an annular rotating
1. A gas-liquid rotating coalescer separating liquid from a gas-liquid mixture, comprising: a coalescing filter assembly comprising a housing having an inlet receiving said gas-liquid mixture, a gas outlet discharging separated gas, and a drain outlet discharging separated liquid,an annular rotating inside-out flow coalescing filter element in said housing, the filter element having an endcap,a drive shaft,a rotary drive member coupled to the drive shaft, said rotary drive member positioned between said drive shaft and said endcap when said annular rotating coalescing filter element is received in said housing,a first set of one or more detent surfaces on said rotary drive member, anda second set of one or more detent surfaces on said endcap of said coalescing filter element, said second set of one or more detent surfaces engagingly interacting with said first set of one or more detent surfaces in interlocking mating keyed relation to effect rotation of said coalescing filter element by said rotary drive member. 2. The gas-liquid rotating coalescer according to claim 1 wherein one of said first and second sets of one or more detent surfaces comprises protruding ridges, and the other of said first and second sets of one or more detent surfaces comprises recessed slots. 3. The gas-liquid rotating coalescer according to claim 2 wherein said protruding ridges include protrusions, and said recessed slots include depressions. 4. The gas-liquid rotating coalescer according to claim 1 wherein said first and second sets of one or more detent surfaces comprise protrusions that mate. 5. The gas-liquid rotating coalescer according to claim 1 wherein designated operation of said coalescer including designated rotation of said coalescing filter element requires said coalescing filter element to include said second set of one or more detent surfaces, including said engaged interaction with said first set of one or more detent surfaces in said interlocking mating keyed relation. 6. The gas-liquid rotating coalescer according to claim 5 wherein said designated operation includes optimal and sub-optimal performance. 7. The gas-liquid rotating coalescer according to claim 1 wherein said coalescing filter element rotates about an axis and extends axially along said axis between first and second axial ends having respective first and second axial endcaps, said second axial endcap having an axial endface facing axially away from said first axial end, said second axial endcap having a peripheral outer sideface facing radially outwardly away from said axis, and wherein said second set of one or more detent surfaces is on at least one of said endface and said outer sideface. 8. The gas-liquid rotating coalescer according to claim 7 wherein: said second set of one or more detent surfaces is on said endface; one of said first and second sets of detent surfaces comprises one or more raised axially protruding ridges; the other of said first and second sets of detent surfaces comprises one or more axially recessed slots, each slot receiving a respective said ridge inserted axially thereinto in nested relation providing said engaged interaction in said interlocking mating keyed relation. 9. The gas-liquid rotating coalescer according to claim 8 comprising a plurality of said ridges extending laterally as spokes radially outwardly away from a central region at said axis. 10. The gas-liquid rotating coalescer according to claim 7 wherein: said second set of one or more detent surfaces is on said endface; one of said first and second sets of one or more detent surfaces comprises a raised axially protruding protrusion member having an outer periphery having a keyed shape; the other of said first and second sets of one or more detent surfaces comprises an axially recessed pocket having an inner periphery having a reception shape complemental to said keyed shape of said protrusion member and receiving said protrusion member inserted axially into said pocket in keyed relation. 11. The gas-liquid rotating coalescer according to claim 10 wherein said keyed shape is characterized by a perimeter having a nonuniform radius from said axis. 12. The gas-liquid rotating coalescer according to claim 7 wherein: said first set of one or more detent surfaces comprises a first set of gear teeth facing axially toward said second endcap; said second set of one or more detent surfaces comprises a second set of gear teeth on said endface and facing axially away from said second endcap and engaging said first set of gear teeth in driven relation. 13. The gas-liquid rotating coalescer according to claim 7 wherein said second set of one or more detent surfaces is on said outer sideface. 14. The gas-liquid rotating coalescer according to claim 13 wherein: said first set of one or more detent surfaces comprises a first set of gear teeth facing radially inwardly toward said second endcap; said second set of one or more detent surfaces comprises a second set of gear teeth on said outer sideface and facing radially outwardly away from said second endcap and engaging said first set of gear teeth in driven relation. 15. The gas-liquid rotating coalescer according to claim 1 wherein said coalescing filter element rotates about an axis and extends axially along said axis between first and second axial ends having respective first and second axial endcaps, said second axial endcap having an axial endface facing axially away from said first axial end, said second axial endcap having a peripheral outer sideface facing radially outwardly away from said axis, and an inner sideface facing radially inwardly towards said axis, said inner sideface being spaced radially outwardly of said axis and radially inwardly of said outer sideface, and wherein said second set of one or more detent surfaces is on at least one of said inner sideface, said endface, and said outer sideface. 16. The gas-liquid rotating coalescer according to claim 15 wherein said second set of one or more detent surfaces is on said inner sideface. 17. The gas-liquid rotating coalescer according to claim 16 wherein said first set of one or more detent surfaces on said rotary drive member engages said second set of one or more detent surfaces on said inner sideface in bayonet relation. 18. The gas-liquid rotating coalescer according to claim 15 wherein said inner sideface forms an axially recessed pocket in said second endcap, and said rotary drive member extends axially into said pocket. 19. The gas-liquid rotating coalescer according to claim 1 wherein one of said first and second sets of one or more detent surfaces comprises a pliable member on the respective one of said rotary drive member and said coalescing filter element and complementally pliably conforming to the other of said first and second sets of one or more detent surfaces. 20. The gas-liquid rotating coalescer according to claim 1 wherein said first and second sets of one or more detent surfaces engage each other in said interlocking mating keyed relation in a first engagement direction of rotation, and permit slippage in a second opposite direction of rotation. 21. The gas-liquid rotating coalescer according to claim 1 wherein said coalescing filter element rotates about an axis and extends axially along said axis between first and second axial ends having respective first and second axial endcaps, said coalescing filter element having an axially extending hollow interior, and comprising a third set of one or more detent surfaces on said rotary drive member, and a fourth set of one or more detent surfaces on said coalescing filter element, said rotary drive member comprising a rotary drive shaft extending axially through said second axial endcap and axially through said hollow interior and engaging said first axial endcap, said second set of one or more detent surfaces being on said second endcap, said fourth set of one or more detent surfaces being on said first endcap, said first and third sets of one or more detent surfaces being on said rotary drive shaft at axially spaced locations therealong, said first and second sets of one or more detent surfaces engaging each other in interlocking mating keyed relation as said rotary drive shaft extends through said second endcap, said third and fourth sets of one or more detent surfaces engaging each other in interlocking mating keyed relation as said rotary drive shaft engages said first endcap. 22. The gas-liquid rotating coalescer according to claim 21 wherein the axial extension of said rotary drive shaft through said hollow interior between said first and third sets of one or more detent surfaces respectively engaging said second and fourth sets of one or more detent surfaces on respective said endcaps provides an alignment coupler extending axially between said first and second endcaps and maintaining alignment thereof and preventing torsional twisting of said coalescer filter element therebetween. 23. The gas-liquid rotating coalescer according to claim 21 wherein said each of said first, second, third and fourth sets of one or more detent surfaces has a polygonal shape providing said engaged interaction in said interlocking mating keyed relation. 24. The gas-liquid rotating coalescer according to claim 23 wherein said polygonal shape is hexagonal. 25. The gas-liquid rotating coalescer according to claim 23 wherein at least one of said first and second endcaps has a plurality of vanes extending axially into said hollow interior and extending radially outwardly from a central hub having an inner periphery providing one of said second and fourth sets of one or more detent surfaces engaging said rotary drive shaft. 26. The gas-liquid rotary coalescer according to claim 23 wherein: said first endcap has a first set of a plurality of vanes extending axially into said hollow interior toward said second endcap and extending radially outwardly from a first central hub having an inner periphery providing said fourth set of one or more detent surfaces; said second endcap has a second set of a plurality of vanes extending axially into said hollow interior toward said first endcap and extending radially outwardly from a second central hub having an inner periphery providing said second set of one or more detent surfaces. 27. The gas-liquid rotating coalescer according to claim 26 wherein said first and second sets of vanes extend axially towards each other and engage each other in said hollow interior. 28. The gas-liquid rotating coalescer according to claim 26 wherein the vanes of one of said sets have axially extending apertures therein, and the vanes of the other of said sets have axially extending rods which extend axially into said apertures. 29. The gas-liquid rotating coalescer according to claim 1 wherein said coalescing filter element rotates about an axis and extends axially along said axis between first and second axial ends having respective first and second axial endcaps, said coalescing filter element having an axially extending hollow interior, a torsional-resistance alignment coupler extending axially between said first and second endcaps and maintaining alignment thereof and preventing torsional twisting of said coalescer filter element therebetween. 30. The gas-liquid rotating coalescer according to claim 1 wherein said annular coalescer element has an annular shape selected from the group consisting of circular, oval, oblong, racetrack, pear, triangular, rectangular, and other closed-loop shapes. 31. A coalescing filter element for a gas-liquid rotating coalescer separating liquid from a gas-liquid mixture in a coalescing filter assembly having a housing, the housing having an inlet receiving said gas-liquid mixture, a gas outlet discharging separated gas, and a drain outlet discharging separated liquid, said assembly including a rotary drive member coupled to a drive shaft, the rotary drive member having a first set of one or more detent surfaces, said coalescing filter element comprising: an annular rotating inside-out flow coalescing filter element having an endcap such that said rotary drive member is positioned between said endcap and said drive shaft when said annular rotating coalescing filter element is positioned within said housing,a second set of one or more detent surfaces on the endcap, the second set of one or more detent surfaces engagingly interacting with said first set of one or more detent surfaces in interlocking mating keyed relation to effect rotation of said coalescing filter element by said rotary drive member,wherein designated operation of said gas-liquid rotating coalescer, including designated rotation of said coalescing filter element, requires said second set of one or more detent surfaces, including said engaged interaction with said first set of one or more detent surfaces in said interlocking mating keyed relation, whereby a coalescing filter element missing said second set of one or more detent surfaces will not affect effect said designated operation. 32. The coalescing filter element according to claim 31 wherein one of said first and second sets of one or more detent surfaces comprises protruding ridges, and the other of said first and second sets of one or more detent surfaces comprises recessed slots. 33. The coalescing filter element according to claim 32 wherein said protruding ridges include protrusions, and said recessed slots include depressions. 34. The coalescing filter element according to claim 31 wherein said first and second sets of one or more detent surfaces comprise protrusions that mate. 35. The coalescing filter element according to claim 31 wherein said coalescing filter element rotates about an axis and extends axially along said axis between first and second axial ends having respective first and second axial endcaps, said second axial endcap having an axial endface facing axially away from said first axial end, said second axial endcap having a peripheral outer sideface facing radially outwardly away from said axis, and wherein said second set of one or more detent surfaces is on at least one of said endface and said outer sideface. 36. The coalescing filter element according to claim 35 wherein: said second set of one or more detent surfaces is on said endface; one of said first and second sets of detent surfaces comprises one or more raised axially protruding ridges; the other of said first and second sets of detent surfaces comprises one or more axially recessed slots, each slot receiving a respective said ridge inserted axially thereinto in nested relation providing said engaged interaction in said interlocking mating keyed relation. 37. The coalescing filter element according to claim 36 comprising a plurality of said ridges extending laterally as spokes radially outwardly away from a central region at said axis. 38. The coalescing filter element according to claim 35 wherein: said second set of one or more detent surfaces is on said endface; one of said first and second sets of one or more detent surfaces comprises a raised axially protruding protrusion member having an outer periphery having a keyed shape; the other of said first and second sets of one or more detent surfaces comprises an axially recessed pocket having an inner periphery having a reception shape complemental to said keyed shape of said protrusion member and receiving said protrusion member inserted axially into said pocket in keyed relation. 39. The coalescing filter element according to claim 38 wherein said keyed shape is characterized by a perimeter having a nonuniform radius from said axis. 40. The coalescing filter element according to claim 35 wherein: said first set of one or more detent surfaces comprises a first set of gear teeth facing axially toward said second endcap; said second set of one or more detent surfaces comprises a second set of gear teeth on said endface and facing axially away from said second endcap and engaging said first set of gear teeth in driven relation. 41. The coalescing filter element according to claim 35 wherein said second set of one or more detent surfaces is on said outer sideface. 42. The coalescing filter element according to claim 41 wherein: said first set of one or more detent surfaces comprises a first set of gear teeth facing radially inwardly toward said second endcap; said second set of one or more detent surfaces comprises a second set of gear teeth on said outer sideface and facing radially outwardly away from said second endcap and engaging said first set of gear teeth in driven relation. 43. The coalescing filter element according to claim 31 wherein said coalescing filter element rotates about an axis and extends axially along said axis between first and second axial ends having respective first and second axial endcaps, said second axial endcap having an axial endface facing axially away from said first axial end, said second axial endcap having a peripheral outer sideface facing radially outwardly away from said axis, and an inner sideface facing radially inwardly toward said axis, said inner sideface being spaced radially outwardly of said axis and radially inwardly of said outer sideface, and wherein said second set of one or more detent surfaces is on at least one of said inner sideface, said endface, and said outer sideface. 44. The coalescing filter element according to claim 43 wherein said second set of one or more detent surfaces is on said inner sideface. 45. The coalescing filter element according to claim 44 wherein said first set of one or more detent surfaces on said rotary drive member engages said second set of one or more detent surfaces on said inner sideface in bayonet relation. 46. The coalescing filter element according to claim 43 wherein said inner sideface forms an axially recessed pocket in said second endcap, and said rotary drive member extends axially into said pocket. 47. The coalescing filter element according to claim 31 wherein one of said first and second sets of one or more detent surfaces comprises a pliable member on the respective one of said rotary drive member and said coalescing filter element and complementally pliably conforming to the other of said first and second sets of one or more detent surfaces. 48. The coalescing filter element according to claim 31 wherein said first and second sets of one or more detent surfaces engage each other in said interlocking mating keyed relation in a first engagement direction of rotation, and permit slippage in a second opposite direction of rotation. 49. The coalescing filter element according to claim 31 wherein said coalescing filter element rotates about an axis and extends axially along said axis between first and second axial ends having respective first and second axial endcaps, said coalescing filter element having an axially extending hollow interior, and comprising a third set of one or more detent surfaces on said rotary drive member, and a fourth set of one or more detent surfaces on said coalescing filter element, said rotary drive member comprising a rotary drive shaft extending axially through said second axial endcap and axially through said hollow interior and engaging said first axial endcap, said second set of one or more detent surfaces being on said second endcap, said fourth set of one or more detent surfaces being on said first endcap, said first and third sets of one or more detent surfaces being on said rotary drive shaft at axially spaced locations therealong, said first and second sets of one or more detent surfaces engaging each other in interlocking mating keyed relation as said rotary drive shaft extends through said second endcap, said third and fourth sets of one or more detent surfaces engaging each other in interlocking mating keyed relation as said rotary drive shaft engages said first endcap. 50. The coalescing filter element according to claim 49 wherein the axial extension of said rotary drive shaft through said hollow interior between said first and third sets of one or more detent surfaces respectively engaging said second and fourth sets of one or more detent surfaces on respective said endcaps provides an alignment coupler extending axially between said first and second endcaps and maintaining alignment thereof and preventing torsional twisting of said coalescer filter element therebetween. 51. The coalescing filter element according to claim 49 wherein each of said first, second, third and fourth sets of one or more detent surfaces has a polygonal shape providing said engaged interaction in said interlocking mating keyed relation. 52. The coalescing filter element according to claim 51 wherein said polygonal shape is hexagonal. 53. The coalescing filter element according to claim 49 wherein at least one of said first and second endcaps has a plurality of vanes extending axially into said hollow interior and extending radially outwardly from a central hub having an inner periphery providing one of said second and fourth sets of one or more detent surfaces engaging said rotary drive shaft. 54. The coalescing filter element according to claim 49 wherein: said first endcap has a first set of a plurality of vanes extending axially into said hollow interior toward said second endcap and extending radially outwardly from a first central hub having an inner periphery providing said fourth set of one or more detent surfaces; said second endcap has a second set of a plurality of vanes extending axially into said hollow interior toward said first endcap and extending radially outwardly from a second central hub having an inner periphery providing said second set of one or more detent surfaces. 55. The coalescing filter element according to claim 54 wherein said first and second sets of vanes extend axially towards each other and engage each other in said hollow interior. 56. The coalescing filter element according to claim 54 wherein the vanes of one of said sets have axially extending apertures therein, and the vanes of the other of said sets have axially extending rods which extend axially into said apertures. 57. The coalescing filter element according to claim 31 wherein said coalescing filter element rotates about an axis and extends axially along said axis between first and second axial ends having respective first and second axial endcaps, said coalescing filter element having an axially extending hollow interior, a torsional-resistance alignment coupler extending axially between said first and second endcaps and maintaining alignment thereof and preventing torsional twisting of said coalescer filter element therebetween. 58. The coalescing filter element according to claim 31 wherein said annular coalescer element has an annular shape selected from the group consisting of circular, oval, oblong, racetrack, pear, triangular, rectangular, and other closed-loop shapes. 59. The coalescing filter element according to claim 31 wherein said coalescing filter element is an aftermarket replacement coalescing filter element. 60. A gas-liquid rotating coalescer separating liquid from a gas-liquid mixture, comprising: a coalescing filter assembly comprising a housing having an inlet receiving the gas-liquid mixture, a gas outlet discharging separated gas, and a drain outlet discharging separated liquid;an annular rotating coalescing filter element in the housing, the filter element having an endcap;a drive shaft;a rotary drive member coupled to the drive shaft, the rotary drive member positioned between the drive shaft and the endcap when the annular rotating coalescing filter element is received in the housing;a first set of one or more detent surfaces on the rotary drive member; anda second set of one or more detent surfaces on the endcap of the coalescing filter element, the second set of one or more detent surfaces engagingly interacting with the first set of one or more detent surfaces in interlocking mating keyed relation to effect rotation of the coalescing filter element by the rotary drive member,wherein the coalescing filter element rotates about an axis and extends axially along the axis between first and second axial ends having respective first and second axial endcaps, the coalescing filter element having an axially extending hollow interior, and comprising a third set of one or more detent surfaces on the rotary drive member, and a fourth set of one or more detent surfaces on the coalescing filter element, the rotary drive member comprising a rotary drive shaft extending axially through the second axial endcap and axially through the hollow interior and engaging the first axial endcap, the second set of one or more detent surfaces being on the second endcap, the fourth set of one or more detent surfaces being on the first endcap, the first and third sets of one or more detent surfaces being on the rotary drive shaft at axially spaced locations therealong, the first and second sets of one or more detent surfaces engaging each other in interlocking mating keyed relation as the rotary drive shaft extends through the second endcap, the third and fourth sets of one or more detent surfaces engaging each other in interlocking mating keyed relation as the rotary drive shaft engages the first endcap, andwherein the axial extension of the rotary drive shaft through the hollow interior between the first and third sets of one or more detent surfaces respectively engaging the second and fourth sets of one or more detent surfaces on respective the endcaps provides an alignment coupler extending axially between the first and second endcaps and maintaining alignment thereof and preventing torsional twisting of the coalescer filter element therebetween. 61. A coalescing filter element for a gas-liquid rotating coalescer separating liquid from a gas-liquid mixture in a coalescing filter assembly having a housing, the housing having an inlet receiving the gas-liquid mixture, a gas outlet discharging separated gas, and a drain outlet discharging separated liquid, the assembly including a rotary drive member coupled to a drive shaft, the rotary drive member having a first set of one or more detent surfaces, the coalescing filter element comprising: an annular rotating coalescing filter element having an endcap such that the rotary drive member is positioned between the endcap and the drive shaft when the annular rotating coalescing filter element is positioned within the housing; anda second set of one or more detent surfaces on the endcap, the second set of one or more detent surfaces engagingly interacting with the first set of one or more detent surfaces in interlocking mating keyed relation to effect rotation of the coalescing filter element by the rotary drive member;wherein designated operation of the gas-liquid rotating coalescer, including designated rotation of the coalescing filter element, requires the second set of one or more detent surfaces, including the engaged interaction with the first set of one or more detent surfaces in the interlocking mating keyed relation, whereby a coalescing filter element missing the second set of one or more detent surfaces will not affect effect the designated operation,wherein the coalescing filter element rotates about an axis and extends axially along the axis between first and second axial ends having respective first and second axial endcaps, the coalescing filter element having an axially extending hollow interior, and comprising a third set of one or more detent surfaces on the rotary drive member, and a fourth set of one or more detent surfaces on the coalescing filter element, the rotary drive member comprising a rotary drive shaft extending axially through the second axial endcap and axially through the hollow interior and engaging the first axial endcap, the second set of one or more detent surfaces being on the second endcap, the fourth set of one or more detent surfaces being on the first endcap, the first and third sets of one or more detent surfaces being on the rotary drive shaft at axially spaced locations therealong, the first and second sets of one or more detent surfaces engaging each other in interlocking mating keyed relation as the rotary drive shaft extends through the second endcap, the third and fourth sets of one or more detent surfaces engaging each other in interlocking mating keyed relation as the rotary drive shaft engages the first endcap, andwherein the axial extension of the rotary drive shaft through the hollow interior between the first and third sets of one or more detent surfaces respectively engaging the second and fourth sets of one or more detent surfaces on respective the endcaps provides an alignment coupler extending axially between the first and second endcaps and maintaining alignment thereof and preventing torsional twisting of the coalescer filter element therebetween. 62. A gas-liquid rotating coalescer separating liquid from a gas-liquid mixture, comprising: a coalescing filter assembly comprising a housing having an inlet receiving the gas-liquid mixture, a gas outlet discharging separated gas, and a drain outlet discharging separated liquid;an annular rotating coalescing filter element in the housing, the filter element having an endcap;a drive shaft;a rotary drive member coupled to the drive shaft, the rotary drive member positioned between the drive shaft and the endcap when the annular rotating coalescing filter element is received in the housing;a first set of one or more detent surfaces on the rotary drive member; anda second set of one or more detent surfaces on the endcap of the coalescing filter element, the second set of one or more detent surfaces engagingly interacting with the first set of one or more detent surfaces in interlocking mating keyed relation to effect rotation of the coalescing filter element by the rotary drive member;wherein the coalescing filter element rotates about an axis and extends axially along the axis between first and second axial ends having respective first and second axial endcaps, the coalescing filter element having an axially extending hollow interior, and comprising a third set of one or more detent surfaces on the rotary drive member, and a fourth set of one or more detent surfaces on the coalescing filter element, the rotary drive member comprising a rotary drive shaft extending axially through the second axial endcap and axially through the hollow interior and engaging the first axial endcap, the second set of one or more detent surfaces being on the second endcap, the fourth set of one or more detent surfaces being on the first endcap, the first and third sets of one or more detent surfaces being on the rotary drive shaft at axially spaced locations therealong, the first and second sets of one or more detent surfaces engaging each other in interlocking mating keyed relation as the rotary drive shaft extends through the second endcap, the third and fourth sets of one or more detent surfaces engaging each other in interlocking mating keyed relation as the rotary drive shaft engages the first endcap,wherein the each of the first, second, third and fourth sets of one or more detent surfaces has a polygonal shape providing the engaged interaction in the interlocking mating keyed relation, andwherein at least one of the first and second endcaps has a plurality of vanes extending axially into the hollow interior and extending radially outwardly from a central hub having an inner periphery providing one of the second and fourth sets of one or more detent surfaces engaging the rotary drive shaft. 63. A coalescing filter element for a gas-liquid rotating coalescer separating liquid from a gas-liquid mixture in a coalescing filter assembly having a housing, the housing having an inlet receiving the gas-liquid mixture, a gas outlet discharging separated gas, and a drain outlet discharging separated liquid, the assembly including a rotary drive member coupled to a drive shaft, the rotary drive member having a first set of one or more detent surfaces, the coalescing filter element comprising: an annular rotating coalescing filter element having an endcap such that the rotary drive member is positioned between the endcap and the drive shaft when the annular rotating coalescing filter element is positioned within the housing; anda second set of one or more detent surfaces on the endcap, the second set of one or more detent surfaces engagingly interacting with the first set of one or more detent surfaces in interlocking mating keyed relation to effect rotation of the coalescing filter element by the rotary drive member;wherein designated operation of the gas-liquid rotating coalescer, including designated rotation of the coalescing filter element, requires the second set of one or more detent surfaces, including the engaged interaction with the first set of one or more detent surfaces in the interlocking mating keyed relation, whereby a coalescing filter element missing the second set of one or more detent surfaces will not affect effect the designated operation;wherein the coalescing filter element rotates about an axis and extends axially along the axis between first and second axial ends having respective first and second axial endcaps, the coalescing filter element having an axially extending hollow interior, and comprising a third set of one or more detent surfaces on the rotary drive member, and a fourth set of one or more detent surfaces on the coalescing filter element, the rotary drive member comprising a rotary drive shaft extending axially through the second axial endcap and axially through the hollow interior and engaging the first axial endcap, the second set of one or more detent surfaces being on the second endcap, the fourth set of one or more detent surfaces being on the first endcap, the first and third sets of one or more detent surfaces being on the rotary drive shaft at axially spaced locations therealong, the first and second sets of one or more detent surfaces engaging each other in interlocking mating keyed relation as the rotary drive shaft extends through the second endcap, the third and fourth sets of one or more detent surfaces engaging each other in interlocking mating keyed relation as the rotary drive shaft engages the first endcap,wherein each of the first, second, third and fourth sets of one or more detent surfaces has a polygonal shape providing the engaged interaction in the interlocking mating keyed relation, andwherein at least one of the first and second endcaps has a plurality of vanes extending axially into the hollow interior and extending radially outwardly from a central hub having an inner periphery providing one of the second and fourth sets of one or more detent surfaces engaging the rotary drive shaft. 64. A gas-liquid rotating coalescer separating liquid from a gas-liquid mixture, comprising: a coalescing filter assembly comprising a housing having an inlet receiving the gas-liquid mixture, a gas outlet discharging separated gas, and a drain outlet discharging separated liquid;an annular rotating coalescing filter element in the housing, the filter element having an endcap;a drive shaft;a rotary drive member coupled to the drive shaft, the rotary drive member positioned between the drive shaft and the endcap when the annular rotating coalescing filter element is received in the housing;a first set of one or more detent surfaces on the rotary drive member; anda second set of one or more detent surfaces on the endcap of the coalescing filter element, the second set of one or more detent surfaces engagingly interacting with the first set of one or more detent surfaces in interlocking mating keyed relation to effect rotation of the coalescing filter element by the rotary drive member;wherein the coalescing filter element rotates about an axis and extends axially along the axis between first and second axial ends having respective first and second axial endcaps, the coalescing filter element having an axially extending hollow interior, and comprising a third set of one or more detent surfaces on the rotary drive member, and a fourth set of one or more detent surfaces on the coalescing filter element, the rotary drive member comprising a rotary drive shaft extending axially through the second axial endcap and axially through the hollow interior and engaging the first axial endcap, the second set of one or more detent surfaces being on the second endcap, the fourth set of one or more detent surfaces being on the first endcap, the first and third sets of one or more detent surfaces being on the rotary drive shaft at axially spaced locations therealong, the first and second sets of one or more detent surfaces engaging each other in interlocking mating keyed relation as the rotary drive shaft extends through the second endcap, the third and fourth sets of one or more detent surfaces engaging each other in interlocking mating keyed relation as the rotary drive shaft engages the first endcap,wherein the each of the first, second, third and fourth sets of one or more detent surfaces has a polygonal shape providing the engaged interaction in the interlocking mating keyed relation, andwherein the first endcap has a first set of a plurality of vanes extending axially into the hollow interior toward the second endcap and extending radially outwardly from a first central hub having an inner periphery providing the fourth set of one or more detent surfaces, and the second endcap has a second set of a plurality of vanes extending axially into the hollow interior toward the first endcap and extending radially outwardly from a second central hub having an inner periphery providing the second set of one or more detent surfaces. 65. The gas-liquid rotating coalescer according to claim 64 wherein the first and second sets of vanes extend axially towards each other and engage each other in the hollow interior. 66. The gas-liquid rotating coalescer according to claim 64 wherein the vanes of one of the sets have axially extending apertures therein, and the vanes of the other of the sets have axially extending rods which extend axially into the apertures. 67. A coalescing filter element for a gas-liquid rotating coalescer separating liquid from a gas-liquid mixture in a coalescing filter assembly having a housing, the housing having an inlet receiving the gas-liquid mixture, a gas outlet discharging separated gas, and a drain outlet discharging separated liquid, the assembly including a rotary drive member coupled to a drive shaft, the rotary drive member having a first set of one or more detent surfaces, the coalescing filter element comprising: an annular rotating coalescing filter element having an endcap such that the rotary drive member is positioned between the endcap and the drive shaft when the annular rotating coalescing filter element is positioned within the housing; anda second set of one or more detent surfaces on the endcap, the second set of one or more detent surfaces engagingly interacting with the first set of one or more detent surfaces in interlocking mating keyed relation to effect rotation of the coalescing filter element by the rotary drive member;wherein designated operation of the gas-liquid rotating coalescer, including designated rotation of the coalescing filter element, requires the second set of one or more detent surfaces, including the engaged interaction with the first set of one or more detent surfaces in the interlocking mating keyed relation, whereby a coalescing filter element missing the second set of one or more detent surfaces will not affect effect the designated operation;wherein the coalescing filter element rotates about an axis and extends axially along the axis between first and second axial ends having respective first and second axial endcaps, the coalescing filter element having an axially extending hollow interior, and comprising a third set of one or more detent surfaces on the rotary drive member, and a fourth set of one or more detent surfaces on the coalescing filter element, the rotary drive member comprising a rotary drive shaft extending axially through the second axial endcap and axially through the hollow interior and engaging the first axial endcap, the second set of one or more detent surfaces being on the second endcap, the fourth set of one or more detent surfaces being on the first endcap, the first and third sets of one or more detent surfaces being on the rotary drive shaft at axially spaced locations therealong, the first and second sets of one or more detent surfaces engaging each other in interlocking mating keyed relation as the rotary drive shaft extends through the second endcap, the third and fourth sets of one or more detent surfaces engaging each other in interlocking mating keyed relation as the rotary drive shaft engages the first endcap,wherein each of the first, second, third and fourth sets of one or more detent surfaces has a polygonal shape providing the engaged interaction in the interlocking mating keyed relation, andwherein the first endcap has a first set of a plurality of vanes extending axially into the hollow interior toward the second endcap and extending radially outwardly from a first central hub having an inner periphery providing the fourth set of one or more detent surfaces, and the second endcap has a second set of a plurality of vanes extending axially into the hollow interior toward the first endcap and extending radially outwardly from a second central hub having an inner periphery providing the second set of one or more detent surfaces. 68. The coalescing filter element according to claim 67 wherein the first and second sets of vanes extend axially towards each other and engage each other in the hollow interior. 69. The coalescing filter element according to claim 67 wherein the vanes of one of the sets have axially extending apertures therein, and the vanes of the other of the sets have axially extending rods which extend axially into the apertures. 70. A gas-liquid rotating coalescer separating liquid from a gas-liquid mixture, comprising: a coalescing filter assembly comprising a housing having an inlet receiving the gas-liquid mixture, a gas outlet discharging separated gas, and a drain outlet discharging separated liquid;an annular rotating coalescing filter element in the housing, the filter element having an endcap;a drive shaft;a rotary drive member coupled to the drive shaft, the rotary drive member positioned between the drive shaft and the endcap when the annular rotating coalescing filter element is received in the housing;a first set of one or more detent surfaces on the rotary drive member; anda second set of one or more detent surfaces on the endcap of the coalescing filter element, the second set of one or more detent surfaces engagingly interacting with the first set of one or more detent surfaces in interlocking mating keyed relation to effect rotation of the coalescing filter element by the rotary drive member,wherein the coalescing filter element rotates about an axis and extends axially along the axis between first and second axial ends having respective first and second axial endcaps, the coalescing filter element having an axially extending hollow interior, a torsional-resistance alignment coupler extending axially between the first and second endcaps and maintaining alignment thereof and preventing torsional twisting of the coalescer filter element therebetween. 71. A coalescing filter element for a gas-liquid rotating coalescer separating liquid from a gas-liquid mixture in a coalescing filter assembly having a housing, the housing having an inlet receiving the gas-liquid mixture, a gas outlet discharging separated gas, and a drain outlet discharging separated liquid, the assembly including a rotary drive member coupled to a drive shaft, the rotary drive member having a first set of one or more detent surfaces, the coalescing filter element comprising: an annular rotating coalescing filter element having an endcap such that the rotary drive member is positioned between the endcap and the drive shaft when the annular rotating coalescing filter element is positioned within the housing; anda second set of one or more detent surfaces on the endcap, the second set of one or more detent surfaces engagingly interacting with the first set of one or more detent surfaces in interlocking mating keyed relation to effect rotation of the coalescing filter element by the rotary drive member,wherein designated operation of the gas-liquid rotating coalescer, including designated rotation of the coalescing filter element, requires the second set of one or more detent surfaces, including the engaged interaction with the first set of one or more detent surfaces in the interlocking mating keyed relation, whereby a coalescing filter element missing the second set of one or more detent surfaces will not affect effect the designated operation, andwherein the coalescing filter element rotates about an axis and extends axially along the axis between first and second axial ends having respective first and second axial endcaps, the coalescing filter element having an axially extending hollow interior, a torsional-resistance alignment coupler extending axially between the first and second endcaps and maintaining alignment thereof and preventing torsional twisting of the coalescer filter element therebetween.
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