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A protector for a threaded end section of a cylindrical part, such as pipe, has a tubular body having a plurality of flexible ribs projecting from a wall of the body. The ribs, in an unflexed condition, extend at an acute angle in a forward direction toward the pipe upon which the protector is place

A protector for a threaded end section of a cylindrical part, such as pipe, has a tubular body having a plurality of flexible ribs projecting from a wall of the body. The ribs, in an unflexed condition, extend at an acute angle in a forward direction toward the pipe upon which the protector is placed on the threaded end section of the pipe. The body is disposed in space telescoped confronting relation to the threaded end section of the pipe to preclude circumferential and radial destructive stress between the body and the threaded end of the pipe. In one embodiment the ribs comprise first ribs engageable with the threaded end section of the pipe and second ribs located adjacent the first ribs in holding engagement with the threaded end section of the pipe.

대표청구항 ▼

1. A removable protector and a cylindrical pipe having a tapered and threaded end section extending axially from one end thereof, wherein said pipe is subject to moisture and temperature extremes, said protector having a tubular body of substantially rigid plastic material located substantially conc

1. A removable protector and a cylindrical pipe having a tapered and threaded end section extending axially from one end thereof, wherein said pipe is subject to moisture and temperature extremes, said protector having a tubular body of substantially rigid plastic material located substantially concentric in unsealed relation with respect to said threaded end section of the pipe to protect the same, said tubular body having a first end, a second end opposite therefrom, a longitudinal axis therethrough, and inner and outer wall surfaces extending between said ends, said body first end having radially projecting stop means thereon located in engagement with said pipe to limit telescoping motion with respect thereto, said tubular body wall surfaces having a taper between the ends thereof substantially similar to that of the tapered and threaded end section of the pipe with which the same is telescopingly associated, one of said wall surfaces of said body being disposed in spaced telescoped confronting relation to said threaded end section of the pipe, a plurality of circumferentially disposed flexible ribs extending freely from said one of said wall surfaces in engagement with said threaded end section of the pipe, said ribs forming an acute angle with said body wall surface in unflexed condition and normally extending in a direction from said first end toward said second end of said body, said ribs having sufficient flexibility to revert upon engagement and axial telescoping motion with respect to a said threaded end section of the pipe thereby to extend in a direction from said body second end towards said body first end, said wall surface of said body with said ribs thereon having a diameter sufficient to radially space said wall surface of said body with said ribs from said threaded end section of the pipe so that said reverse flexing of said ribs occurs upon telescoping said protector with respect to said pipe, and to preclude circumferential and radial destructive stress contact between said threaded end section of the pipe and said protector wall surface having said ribs upon thermal expansion and contraction of said pipe, and wherein said spacing allows fluids to flow through the space, said stop means at said body first end having means for cooperation with a tool to unthread the protector when desired from a said threaded end section of the pipe. 2. The protector and pipe of claim 1 wherein: said ribs are on said inner wall surface for cooperation with a tapered and externally threaded end section of the pipe. 3. The protector and pipe of claim 2 wherein: said ribs comprise a plurality of circumferentially disposed arcuate rib segments, adjacent rib segments being separated from each other to provide spaces allowing fluids to flow through said protector when mounted on the threaded end section of the pipe. 4. A removable protector for a tapered and internal threaded end section of a cylindrical pipe extending axially from one end thereof, wherein said pipe is subject to moisture and temperature extremes, said protector comprising: a tubular body of substantially rigid plastic material for telescoping reception and substantially concentric positioning in unsealed relation with respect to a said threaded end section of the pipe to protect the same, said tubular body having a first end, a second end opposite therefrom, a longitudinal axis therethrough, and inner and outer wall surfaces extending between said ends, said body first end having radially projecting stop means thereon for engagement with said pipe to limit telescoping motion with respect thereto, said tubular body wall surfaces having a taper between the ends thereof substantially similar to that of the tapered and threaded end section of the pipe with which the same is telescopingly associated, said outer wall surface of said body adapted to be disposed in spaced telescoped confronting relation to said internal threaded end section of the pipe, a plurality of circumferentially disposed flexible ribs extending freely from said outer wall surface of the body for engagement with a threaded end section of the pipe, said ribs being disposed on said outer wall surface of said body for cooperative association with the tapered and internally threaded end section of the pipe, said ribs forming an acute angle with said body wall surface in unflexed condition and normally extending in a direction from said first end toward said second end of said body, said ribs having sufficient flexibility to revert upon engagement and axial telescoping motion with respect to a said threaded end section of the pipe thereby to extend in a direction from said body second end towards said body first end, said outer wall surface of said body with said ribs thereon having a diameter sufficient to radially space said outer wall surface from said threaded end section of the pipe so that said reverse flexing of said ribs occurs upon telescoping said protector with respect to said pipe, and to preclude circumferential and radial destructive stress contact between said threaded end section of the pipe and said protector wall surfaces upon thermal expansion and contraction of said pipe, and wherein said spacing allows fluids to flow through the space, said stop means at said body first end having means for cooperation with a tool to unthread the protector when desired from a said threaded end section of the pipe. 5. The protector of claim 4 wherein: said ribs comprise a plurality of circumferentially disposed arcuate rib segments, adjacent rib segments being separated from each other to provide spaces allowing fluids to flow through said protector when mounted on the threaded end section of the pipe. 6. A removable protector for a tapered and threaded end section of a cylindrical pipe extending axially from one end thereof, wherein said pipe is subject to moisture and temperature extremes, said protector comprising: a tubular body of substantially rigid plastic material for telescoping reception and substantially concentric positioning in unsealed relation with respect to said threaded end section of the pipe to protect the same, said tubular body having a first end, a second end opposite therefrom a longitudinal axis therethrough, and inner and outer wall surfaces extending between said ends, said body first end having radially projecting stop means thereon for engagement with said pipe to limit telescoping motion with respect thereto, said tubular body wall surfaces having a taper between the ends thereof substantially similar to that of the tapered and threaded end section of the pipe with which the same is telescopingly associated, one of said wall surfaces of said body adapted to be disposed in spaced telescoped confronting relation to said threaded end section of the pipe, a plurality of circumferentially disposed flexible ribs extending freely from said one of said wall surfaces for engagement with a threaded end section of the pipe, said ribs comprise first rib members engageable with the threaded end section of the pipe and second rib members located adjacent said first rib members, said ribs forming an acute angle with said body wall surface in unflexed condition and normally extending in a direction from said first end toward said second end of said body, said ribs having sufficient flexibility to revert upon engagement and axial telescoping motion with respect to a said threaded end section of the pipe thereby to extend in a direction from said body second end towards said body first end, said first rib members when reverted located in engagement with the second rib members whereby the second rib members bias the first rib members into engagement with the threaded end section of the pipe, said wall surface of said body with said ribs thereon having a diameter sufficient to radially space said wall surface from a said threaded end section of the pipe so that said reverse flexing of said ribs occurs upon telescoping said protector with respect to said pipe, and to preclude circumferential and radial destructive stress contact between said threaded end section of the pipe and said protector wall surface having said ribs upon thermal expansion and contraction of said pipe, and wherein said spacing allows fluids to flow through the space, said stop means at said body first end having means for cooperation with a tool to unthread the protector when desired from a said threaded end section of the pipe. 7. The protector of claim 6 wherein: said first rib members comprise a plurality of circumferentially spaced rib segments. 8. The protector of claim 6 wherein: said first rib members comprise a plurality of circumferentially spaced first rib segments, and the second rib members comprise a plurality of circumferentially spaced second rib segments located adjacent the first rib segments. 9. The protector of claim 6 wherein: said first rib members and second rib members are joined to said outer wall surface of said body, said first rib members cooperating with a tapered and internally threaded end section of the pipe. 10. The protector of claim 9 wherein: said first rib members and second rib members each comprise circumferentially disposed arcuate rib segments, adjacent rib segments being separate from each other to provide spaces allowing fluids to flow through said protector when mounted on the threaded end section of the pipe. 11. The protector of claim 6 wherein: said first rib members and second rib members are joined to said inner wall surface of said body, said first rib members cooperating with a tapered and externally threaded end section of the pipe. 12. The protector of claim 11 wherein: said first rib members and second rib members each comprise circumrerentially disposed arcuate rib segments, adjacent rib segments being separated from each other to provide spaces allowing fluids to flow through said protector when mounted on the threaded end section of the pipe. 13. A removable protector and a cylindrical pipe having a tapered and threaded end section, said protector having a tubular body of substantially rigid plastic material mounted on threaded end section of the pipe to protect the same, said tubular body having a first end having radially projecting stop means thereon engageable with said pipe to limit telescoping motion with respect thereto, said body having wall surfaces taper between the ends thereof substantially similar to that of the tapered and threaded end section of the pipe with which the same is telescopingly associated, one of said wall surfaces of said body being disposed in telescoped confronting relation to said threaded end section of the pipe, a plurality of circumferentially disposed flexible rib means extending freely from said one of said wall surfaces for engagement with the threaded end section of the pipe, said rib means forming an acute angle with said one of said wall surfaces in unflexed condition and normally extending in a direction from said first end toward said second end of said body, said rib means having sufficient flexibility to revert upon engagement with a said threaded end section of the pipe thereby to extend in a direction from said body second end towards said first end of the body, said one of said wall surfaces of said body with said rib means thereon having a size sufficient to radially space said one of said wall surfaces from a said threaded end section of the pipe so that said reverse flexing of said rib means occurs upon telescoping said protector with respect to said threaded end section of the pipe and to preclude stress contact between said threaded end section of the pipe and said wall surface having the rib means and allow fluids to flow through the space. 14. A removable protector for a tapered and internally threaded end section of a cylindrical pipe comprising: a tubular body of substantially rigid plastic material for telescoping reception with respect to said threaded end section of the pipe to protect the same, said tubular body having a first end having radially projecting stop means thereon for engagement with said pipe to limit telescoping motion with respect thereto, said body having an outer wall surface taper between the ends thereof substantially similar to that of the tapered and internally threaded end section of the pipe with which the same is telescopingly associated, said outer wall surface of said body being adapted to be disposed in telescoped confronting relation to said threaded end section of the pipe, a plurality of circumferentially disposed flexible rib means disposed on and extending freely from said outer wall surface for cooperative engagement with the internally threaded end section of the pipe, said rib means forming an acute angle with said outer wall surface for cooperative engagement with the internally threaded end section of the pipe, said rib means forming an acute angle with said outer wall surface in unflexed condition and normally extending in a direction from said first end toward said second end of said body, said rib means having sufficient flexibility to revert upon engagement with a said threaded end section of the pipe thereby to extend in a direction from said body second end towards said first end of the body, said outer wall surface of said body with said rib means thereon having a size sufficient to radially space said outer wall surface from said threaded end section of the pipe so that said reverse flexing of said rib means occurs upon telescoping said protector with respect to said threaded end section of the pipe and to preclude stress contact between said threaded end section of the pipe and said outer wall surface having the rib means and allow fluids to flow through the space. 15. The protector of claim 14 wherein: said rib means comprise a plurality of circumferentially disposed arcuate rib segments, adjacent rib segments being separated from each other to provide spaces allowing fluids to flow through said protector when mounted on the threaded end section of the pipe. 16. The protector and pipe of claim 13 wherein: said rib means are on said inner wall surface for cooperation with a tapered and externally threaded pipe end section. 17. The protector and pipe of claim 16 wherein: said rib means comprise a plurality of circumferentially disposed arcuate rib segments, adjacent rib segments being separated from each other to provide spaces allowing fluids to flow through said protector when mounted on the threaded end section of the pipe. 18. A removable protector for a tapered and threaded end section of a cylindrical pipe comprising: a tubular body of substantially rigid plastic material for telescoping reception with respect to said pipe threaded end section of the pipe to protect the same, said tubular body having a first end having radially projecting stop means thereon for engagement with said pipe to limit telescoping motion with respect thereto, said body having wall surfaces tapered between the ends thereof substantially similar to that of the tapered and threaded end section of the pipe with which the same is telescopingly associated, one of said wall surfaces of said body being adapted to be disposed in telescoped confronting relation to said threaded end section of the pipe, a plurality of circumferentially disposed flexible rib means extended freely from said one of said wall surfaces for engagement with a threaded end section of the pipe, said rib means comprise first rib members engageable with the threaded end section of the pipe and second rib members located adjacent said first rib members, said rib means forming an acute angle with said one of said wall surfaces in unflexed condition and normally extending in a direction from said first end toward said second end of said body, said rib means having sufficient flexibility to revert upon engagement with said threaded end section of the pipe thereby to extend in a direction from said second end towards said first end of the body, said first rib members when reverted located in engagement with the second rib members whereby the second rib members bias the first rib members into engagement with the threaded end section of the pipe, said one of said wall surfaces of said body with said rib means thereon having a size sufficient to radially space said one of said wall surfaces from said threaded end section of the pipe so that said reverse flexing of said rib means occurs upon telescoping said projector with respect to said threaded end section of the pipe and said wall surface having the rib means. 19. The protector of claim 18 wherein: said first rib members comprise a plurality of circumferentially spaced first rib segments, and second rib members comprise a plurality of circumferentially spaced second rib segments located adjacent the first rib segments. 20. The protector of claim 18 wherein: said first rib members and second rib members are joined to said outer wall surface of said body, said first rib members cooperating with a tapered and internally threaded end section of the pipe. 21. The protector of claim 20 wherein: said first rib members and second rib members each comprise circumferentially disposed arcuate rib segments, adjacent rib segments being separated from each other to provide spaces allowing fluids to flow through said protector when mounted on the threaded end section of the pipe. 22. The protector of claim 18 wherein: said first rib members and second rib members are joined to said inner wall surface of said body, said first rib members cooperating with a tapered and externally threaded end section of the pipe. 23. The protector of claim 22 wherein: said first rib members and second rib members each comprise circumferentially disposed arcuate rib segments, adjacent rib segments being separated from each other to provide spaces allowing fluids to flow through said protector when mounted on the threaded end section of the pipe. 24. The protector of claim 18 wherein: the stop means includes means for cooperation with a tool to unthread the protector when desired from said threaded end section of the pipe.