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Pneumatic pop-up unit for material handling equipment. In one embodiment, the unit comprises a stamped metal housing having a circumferential flange extending radially outwardly from the top. The unit also comprises a stamped metal cap comprising an outer side wall bent down across the outside edge

Pneumatic pop-up unit for material handling equipment. In one embodiment, the unit comprises a stamped metal housing having a circumferential flange extending radially outwardly from the top. The unit also comprises a stamped metal cap comprising an outer side wall bent down across the outside edge of the flange and then radially inwardly against the bottom surface of the flange. The unit further comprises a two-piece stamped metal piston slidably mounted within the housing. The unit further comprises a stamped metal race disposed within the piston. A monolayer of ball bearings are arranged within the race. A primary ball is seated directly on top of the bearings. The top of the primary ball extends partially through the open top of the top piston piece. The unit further comprises a rubber seal fitted around the piston and a coiled spring for biasing the piston downwardly within the housing.

대표청구항 ▼

Pneumatic pop-up unit for material handling equipment. In one embodiment, the unit comprises a stamped metal housing having a circumferential flange extending radially outwardly from the top. The unit also comprises a stamped metal cap comprising an outer side wall bent down across the outside edge

Pneumatic pop-up unit for material handling equipment. In one embodiment, the unit comprises a stamped metal housing having a circumferential flange extending radially outwardly from the top. The unit also comprises a stamped metal cap comprising an outer side wall bent down across the outside edge of the flange and then radially inwardly against the bottom surface of the flange. The unit further comprises a two-piece stamped metal piston slidably mounted within the housing. The unit further comprises a stamped metal race disposed within the piston. A monolayer of ball bearings are arranged within the race. A primary ball is seated directly on top of the bearings. The top of the primary ball extends partially through the open top of the top piston piece. The unit further comprises a rubber seal fitted around the piston and a coiled spring for biasing the piston downwardly within the housing. the fluid is loaded into the bore to a second position where the predetermined volume is ejected out of the bore. Another metering chamber has an elastic portion of a delivery passage in fluid communication with the pressurized source of liquid and the elastic portion of the delivery passage is deformed to eject the predetermined volume. entric with said axis and of differing radii from said axis. 10. The bow set forth in claim 1 wherein said control wheel has an axis of rotation on said one limb and a single peripheral groove that is circular and concentric with said axis, said bowstring cable segment and said control cable segment forming a continuous cable that extends around said single groove. 11. The bow set forth in claim 1 further comprising a control arm on said power cam having a control cable groove for wrapping and unwrapping of said control cable segment, said control arm being of integrally formed unitary construction with said module. 12. A single cam compound archery bow that comprises: a bow handle having projecting limbs, a control wheel rotatably mounted at an end of one of said limbs, a power cam rotatably mounted at an end of the other of said limbs, said power cam including a power cable groove, bow cable means including a power cable segment anchored to said one limb and extending to said power cam, a bowstring cable segment and a control cable segment each anchored at said power cam and extending to said control wheel, and an axle rotatably mounting said power cam to said end of said other limb, wherein said axle is affixed to said power cam and said other bow limb includes bearing means rotatably mounting said axle to said other limb. 13. A compound archery bow that comprises: a bow handle having projecting limbs, first and second pulley means mounted for rotation at opposed ends of said limbs, and bow cable means extending between and trained around said pulley means for drawing said bow, wherein at least one of said pulley means includes an axle affixed to said pulley means, and wherein at least one of said limbs includes bearing means rotatably mounting said axle to said at least one limb. 14. A single cam compound archery bow that comprises: a bow handle having projecting limbs, a control wheel rotatably mounted at an end of one of said limbs, said control wheel having a control groove and a first bowstring let-out groove, a power cam rotatably mounted at an end of the other of said limbs, said power cam including a second bowstring let-out groove and a power cable groove, and bow cable means including a power cable segment anchored at one end to said one limb and at a second end to said power cam at a position to wrap into and unwrap from said power cable groove, a bowstring cable segment anchored at said control wheel and said power cam at positions to wrap into and unwrap from said first and second bowstring let-out grooves, and a control cable segment anchored at said control wheel at a position to wrap into and unwrap from said control groove and anchored at said power cam, wherein said control wheel has an axis of rotation on said one limb, and wherein said control groove and said first bowstring let-out groove on said control wheel are circular, concentric with each other and with said axis, and at differing radii from said axis. 15. The bow set forth in claim 14 wherein said power cam comprises a cam base and a draw length module mounted on said cam base for adjusting length of said power cable groove and thereby adjusting draw length of said bow, and wherein said bowstring cable segment is anchored at said power cam to said draw length module so that adjustment of said module on said cam base automatically simultaneously adjusts length of said bowstring cable segment. 16. The bow set forth in claim 14 wherein said power cam is mounted for rotation about an axis, and wherein said power cable groove on said module has a first portion spaced from said axis with lateral groove sidewalls that confine said power cable segment as it wraps into and unwraps from said power cable groove and a second portion adjacent to said axis without said sidewalls. 17. A single cam compound archery bow that comprises: a bow handle having projecting limbs, a control wheel rotatably mounted at an end of one of said li mbs, a power cam rotatably mounted at an end of the other of said limbs, said power cam including a power cable groove, and bow cable means including a power cable segment anchored at one end to said one limb and at a second end to said power cam at a position to wrap into and unwrap from said power cable groove, a bowstring cable segment and a control cable segment each anchored at said power cam and extending to said control wheel, wherein said power cam is mounted for rotation about an axis, and wherein said power cable groove on said power cam has a first portion spaced from said axis with lateral groove sidewalls that confine said power cable segment as it wraps into and unwraps from said power cable groove and a second portion adjacent to said axis without said sidewalls. 18. The bow set forth in claim 17 further comprising a module adjustably positionable on said cam base for adjusting draw length of said bow. 19. The bow set forth in claim 17 further comprising a module adjustably replaceable on said cam base for adjusting draw length of said bow. 20. The bow set forth in claim 17 further comprising a module that is both adjustably positionable and adjustably replaceable on said cam base for adjusting draw length of said bow. 21. The bow set forth in claim 17 further comprising a module that is adjustably positionable on said cam base for adjusting draw length of said bow, and wherein said cam base includes an array of indicia on said cam base for selective incremental registry with a perimeter portion of said module at plural incremental positions of said module on said cam base, and means for selectively securing said module to said cam base at each of said incremental positions. 22. The bow set forth in claim 21 comprising a plurality of said modules adjustably replaceable on said cam base for adjusting draw length of said bow, and wherein said modules are constructed such that said array of indicia on said cam base selectively incrementally registers with a perimeter portion of each said module at plural incremental positions of each said module on said cam base. 23. The bow set forth in claim 17 further comprising an axle rotatably mounting said power cam to said end of said other limb, wherein said axle is affixed to said power cam and said other bow limb includes bearing means rotatably mounting said axle to said other limb. 24. The bow set forth in claim 17 wherein said control wheel has an axis of rotation on said one limb, and wherein said control wheel has a control groove for receiving said control cable segment and a bowstring let-out groove for receiving said bowstring cable segment, both of said grooves on said control wheel being circular, concentric with said axis and of differing radii from said axis. 25. The bow set forth in claim 17 wherein said control wheel has an axis of rotation on said one limb and a single peripheral groove that is circular and concentric with said axis, said bowstring cable segment and said control cable segment forming a continuous cable that extends around said single groove. 26. The bow set forth in claim 17 further comprising a control arm on said power cam having a control cable groove for wrapping and unwrapping of said control cable segment, said control arm being of integrally formed unitary construction with said module. 27. A single cam compound archery bow that comprises: a bow handle having projecting limbs, a control wheel rotatably mounted at an end of one of said limbs, a power cam rotatably mounted at an end of the other of said limbs, said power cam including a power cable groove, bow cable means including a power cable segment anchored at one end to said one limb and at a second end to said power cam at a position to wrap into and unwrap from said power cable groove, a bowstring cable segment and a control cable segment each anchored at said power cam and extending to said control wheel, said power cam comprising a cam base and a draw length modu le mounted on said cam base for adjusting length of said power cable groove and thereby adjusting draw length of said bow, and a control arm on said power cam having a control cable groove for wrapping and unwrapping of said control cable segment, said control arm being of integrally formed unitary construction with said module. 28. The bow set forth in claim 27 wherein said module is adjustably positionable on said cam base for adjusting draw length of said bow. 29. The bow set forth in claim 27 wherein said module is adjustably replaceable on said cam base for adjusting draw length of said bow. 30. The bow set forth in claim 27 wherein said module is both adjustably positionable and adjustably replaceable on said cam base for adjusting draw length of said bow. 31. The bow set forth in claim 27 wherein said module is adjustably positionable on said cam base for adjusting draw length of said bow, and wherein said cam base includes an array of indicia on said cam base for selective incremental registry with a perimeter portion of said module at plural incremental positions of said module on said cam base, and means for selectively securing said module to said cam base at each of said incremental positions. 32. The bow set forth in claim 31 comprising a plurality of said modules adjustably replaceable on said cam base for adjusting draw length of said bow, and wherein said modules are constructed such that said array of indicia on said cam base selectively incrementally registers with a perimeter portion of each said module at plural incremental positions of each said module on said cam base. 33. The bow set forth in claim 27 wherein said power cam is mounted for rotation about an axis, and wherein said power cable groove on said module has a first portion spaced from said axis with lateral groove sidewalls that confine said power cable segment as it wraps into and unwraps from said power cable groove and a second portion adjacent to said axis without said sidewalls. 34. The bow set forth in claim 27 further comprising an axle rotatably mounting said power cam to said end of said other limb, wherein said axle is affixed to said power cam and said other bow limb includes bearing means rotatably mounting said axle to said other limb. 35. The bow set forth in claim 27 wherein said control wheel has an axis of rotation on said one limb, and wherein said control wheel has a control groove for receiving said control cable segment and a bowstring let-out groove for receiving said bowstring cable segment, both of said grooves on said control wheel being circular, concentric with said axis and of differing radii from said axis. 36. The bow set forth in claim 27 wherein said control wheel has an axis of rotation on said one limb and a single peripheral groove that is circular and concentric with said axis, said bowstring cable segment and said control cable segment forming a continuous cable that extends around said single groove. 37. The bow set forth in claim 27 further comprising a control arm on said power cam having a control cable groove for wrapping and unwrapping of said control cable segment, said control arm being of unitary construction with said module. 38. A single cam compound archery bow that comprises: a bow handle having projecting limbs, a control wheel rotatably mounted at an end of one of said limbs, a power cam rotatably mounted at an end of the other of said limbs, said power cam including a power cable groove, and bow cable means including a power cable segment anchored at one end to said one limb and at a second end to said power cam at a position to wrap into and unwrap from said power cable groove, a bowstring cable segment and a control cable segment each anchored at said power cam and extending to said control wheel, wherein said power cam comprises a cam base and a draw length module mounted on said cam base for adjusting length of said power cable groove and thereby adjusting draw length of said bow