Claims
- 1. A tensioner comprising:
a housing having a housing surface; a wedge having a wedge surface that slidingly engages the housing surface, the wedge further describing a hole; a piston having a first end cooperatively engaging the hole; a pivot arm having a pulley journaled to an end, the pivot arm pivotably mated to a surface and having a second end bearing on an end of the piston opposite the first end; and a compressible member biasing the wedge toward the piston, whereby movement of the wedge against the first end causes the wedge to radially expand against the housing surface thereby damping a movement of the piston.
- 2. The tensioner as in claim 1, wherein:
the wedge hole comprises a frustoconcical hole; and the piston first end comprises a frustoconcical shape that cooperatively engages the frustoconical hole.
- 3. The tensioner as in claim 2, wherein the wedge further comprises:
at least one slot, the slot oriented so the circumference of the wedge is radially expandable in response to a movement against the piston first end.
- 4. The tensioner as in claim 3, further comprising:
an adjuster bearing on an end of the compressible member and the housing whereby a compressible member preload may be changed.
- 5. The tensioner as in claim 4, wherein:
the wedge outer surface further describes a pleated form; and the inner surface further describes a pleated form that cooperates with the pleated form of the wedge outer surface.
- 6. The tensioner as in claim 5, wherein the housing further comprises a cylinder.
- 7. The tensioner as in claim 5, wherein the wedge surface comprises a nonmetallic material.
- 8. The tensioner as in claim 1, wherein the compressible member comprises a spring.
- 9. A tensioner comprising:
a first housing having a first inner surface; a second housing having a second inner surface and an outer surface, the outer surface slidingly engaged with the first inner surface; a first compressible member resisting a movement between the first housing and second housing; a piston having a first end and a second end, the first end being affixed to the first housing and being substantially parallel to a major axis of the first housing; a camming body describing a central hole and having a surface slidingly engaged with the second inner surface and the hole slidingly engaged with the second end; and a second compressible member urging the camming body against the second end, whereby the camming body is radially expandable against the second inner surface.
- 10. The tensioner as in claim 9, wherein:
the camming body central hole further comprises a frustoconcical hole; and the piston second end further comprises a frustoconcical shape that cooperatively engages the frustoconical hole.
- 11. The tensioner as in claim 10, wherein the camming body further comprises:
at least one slot, the slot oriented so the circumference of the camming body is variable in response to a movement against the piston second end.
- 12. The tensioner as in claim 11, wherein:
the camming body surface further describes a pleated form; and the second housing second inner surface further describes a pleated form that cooperates with the pleated form of the camming body surface.
- 13. The tensioner as in claim 12, wherein:
the first housing describes a cylinder; and the second housing describes a cylinder.
- 14. The tensioner as in claim 13, wherein the camming body surface comprises a nonmetallic material.
- 15. The tensioner as in claim 14, wherein the second compressible member bears upon the first housing.
- 16. The tensioner as in claim 14, wherein:
the first compressible member comprises a spring; and the second compressible member comprises a spring.
- 17. The tensioner as in claim 14 further comprising:
a bearing surface attached to the piston, the bearing surface extending normally to a piston axis; and the second compressible member bears upon the bearing surface.
- 18. A damper comprising:
a housing having a housing surface; a wedge having a surface that slidingly engages the housing surface, the wedge further describing a hole; a piston having a first end cooperatively engaging the hole; and a compressible member biasing the wedge toward the piston, whereby movement of the wedge against the first end causes the wedge to radially expand against the housing surface thereby damping a movement of the piston.
- 19. The damper as in claim 18, wherein:
the wedge hole comprises a frustoconcical hole; and the piston first end comprises a frustoconcical shape that cooperatively engages the frustoconical hole.
- 20. The damper as in claim 19, wherein the wedge further comprises:
at least one slot, the slot oriented so the circumference of the wedge is radially expandable in response to a movement against the piston first end.
- 21. The damper as in claim 20, wherein:
the wedge surface further describes a pleated form; and the housing surface further describes a pleated form that cooperates with the pleated form of the wedge surface.
- 22. The damper as in claim 21, wherein the housing further comprises a cylinder.
- 23. The damper as in claim 22, wherein the wedge surface comprises a nonmetallic material.
- 24. The damper as in claim 23, wherein the compressible member comprises a spring.
- 25. A damper comprising:
a first housing having a first housing surface; a wedge describing a wedge hole and having a wedge surface for slidingly engaging the first housing surface; a second housing, the first housing coaxially and slidingly engaging the first housing; a piston having a first end and a second end, the first end engaging the wedge central hole and the second end affixed to the second housing; a first compressible member urging the wedge into contact with the piston first end; a second compressible member urging the first housing away from the second housing.
- 26. The damper as in claim 25, wherein:
the wedge hole comprises a frustoconcical hole; and the piston first end comprises a frustoconcical shape that cooperatively engages the frustoconical hole.
- 27. The damper as in claim 26, wherein the wedge further comprises:
at least one slot, the slot oriented so the circumference of the wedge is radially expandable in response to a movement against the piston first end.
- 28. The damper as in claim 27, wherein:
the wedge outer surface further describes a pleated form; and the first housing surface further describes a pleated form that cooperates with the pleated form of the wedge surface.
- 29. The damper as in claim 28, wherein;
the first housing further comprises a cylinder; and the second housing further comprises a cylinder.
- 30. The damper as in claim 29, wherein at least the wedge surface comprises a nonmetallic material.
- 31. The damper as in claim 30, wherein:
the first compressible member comprises a spring; and the second compressible member comprises a spring.
- 32. A damper comprising:
a first housing having a first housing surface; a second housing having a second housing surface; a wedge having a wedge surface that coaxially and slidingly engages the first housing surface and slidingly engages the second housing surface, the wedge further comprising a wedge hole surface describing a hole into which the second housing surface is engaged; a compressible member biasing the wedge toward the first housing, whereby movement of the wedge against the first housing surface causes the wedge to radially compress against the second housing surface thereby damping a movement of the first housing.
- 33. The damper as in claim 32, wherein the wedge hole comprises a cylindrical hole.
- 34. The damper as in claim 33, wherein the wedge further comprises:
at least one slot, the slot oriented so the circumference of the wedge is radially compressible in response to a movement against the first housing surface.
- 35. The damper as in claim 34, wherein:
the wedge hole further describes a pleated form; and the second housing surface further describes a pleated form that cooperates with the pleated form of the wedge hole.
- 36. The damper as in claim 35, wherein:
the first housing further comprises a cylinder; and the second housing further comprises a cylinder.
- 37. The damper as in claim 36, wherein the wedge hole surface comprises a nonmetallic material.
- 38. The damper as in claim 37, wherein the compressible member comprises a spring.
- 39. A damper comprising:
a first housing having a first housing surface; a piston having a piston surface; a wedge having a wedge surface that coaxially and slidingly engages the first housing surface and slidingly engages the piston surface, the wedge further comprising a wedge hole surface describing a hole into which the piston surface is engaged; a first compressible member biasing the wedge toward the first housing, whereby movement of the wedge against the first housing surface causes the wedge to radially compress against the piston surface thereby damping a movement of the piston; and a second compressible member biasing the first housing away from the piston.
- 40. The damper as in claim 39, wherein the hole comprises a cylindrical hole.
- 41. The damper as in claim 40, wherein the wedge further comprises:
at least one slot, the slot oriented so the circumference of the wedge is radially compressible in response to a movement against the first housing surface.
- 42. The damper as in claim 41, wherein:
the wedge hole surface further describes a pleated form; and the piston surface further describes a pleated form that cooperates with the pleated form of the wedge hole.
- 43. The damper as in claim 42, wherein the first housing further comprises a cylinder.
- 44. The damper as in claim 43, wherein the wedge hole surface comprises a nonmetallic material.
- 45. The damper as in claim 44, wherein:
the first compressible member comprises a spring; and the second compressible member comprises a spring.
- 46. The damper as in claim 32, wherein the first housing surface describes a conical shape having an angle in the range of 0° to 30°.
- 47. The damper as in claim 39, wherein the first housing surface describes a conical shape having an angle in the range of 0° to 30°.
- 48. A damper comprising:
a first member having a first surface; a second member having a second surface, the second surface being co-axially moveable with respect to the first surface; a frictional member having a changeable circumference slidingly engaging the first surface and the second surface; a compressible member urging the frictional member against the first surface whereby a circumference of the frictional member is changed resulting in an enlarged frictional contact with the second surface.
- 49. The damper as in claim 48, wherein the frictional member further comprises at least one slot, the slot oriented so the circumference of the frictional member is changeable.
- 50. The damper as in claim 49 further comprising:
a second compressible member urging the first member away from the second member.
- 51. A damper comprising:
a housing having a housing inner surface; an expandable wedge body having an outer surface in sliding contact with the housing inner surface; a tapered member engaged with the wedge body whereby the wedge body is expandable against the housing inner surface.
- 52. The damper as in claim 51, wherein the wedge body further comprises:
a slot extending along an axis.
- 53. The damper as in claim 52, wherein:
the wedge body outer surface has a coefficient of friction; and the housing inner surface has a coefficient of friction.
- 54. The damper as in claim 52 further comprising:
a first biasing member resisting a movement of the tapered member; and a second biasing member urging the wedge member toward a pressing engagement with the tapered member.
- 55. The damper as in claim 52, wherein:
the wedge member further comprises a conical recess; and the tapered member engages the conical recess in the wedge body.
- 56. The damper as in claim 54, wherein the second biasing member comprises:
a shaft engaged with a spring for resisting a force; and a chamber containing a fluid engaged with the shaft, a fluid flow controlled for damping a movement of the shaft.
- 57. The damper as in claim 52 further comprising:
a second expandable wedge body having an outer surface in sliding contact with the housing inner surface; a second tapered member engaged with the second wedge body whereby the second wedge body is expandable against the housing inner surface; and a biasing member effecting a pressing engagement between the expandable wedge body and the second expandable wedge body.
- 58. The damper as in claim 57, wherein:
the wedge body further comprises a slot extending along an axis; and the second wedge body comprises a slot extending along an axis.
- 59. The damper as in claim 57 further comprising:
a resilient member disposed between the expandable wedge body and the second expandable wedge body.
REFERENCE TO RELATED APPLICATIONS
[0001] This CIP application claims priority from U.S. non-provisional application Ser. No. 09/972,173.
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
09972173 |
Oct 2001 |
US |
Child |
10122985 |
Apr 2002 |
US |