Lock nut system

• US 7,303,367 B2
• Filed: 01/05/2005
• Issued: 12/04/2007
• Est. Priority Date: 01/05/2005
• Status: Active Grant

• Current Assignee: Temper AXLE Products Corporation, Temper Corporation
• Original Assignee: John E. Rode
• Inventors: Rode, John E.
• Primary Examiner(s): Mitchell; Katherine
• Application Number:
  US11/029,531
• Publication Number:
  US 20060147294A1
• Time in Patent Office: 1,063 Days
• Field of Search: 411/246, 411/190, 411/926, 411/237, 411/221, 411/516, 411/520, 411/521, 411/530, 411301-303, 411347-250
• US Class Current: 411/246
• CPC Class Codes: F16B 39/14 made of thin sheet material or formed as spring-washers locknuts per se made of thin sheet metal F16B37/02
• CPC Class Codes: F16B 39/32 Locking by means of a pawl or pawl-like tongue

Abstract

A lock nut system includes a molded nut having a plurality of teeth and a molded keeper having a plurality of keeper teeth engageable with the plurality of teeth to inhibit movement of the keeper relative to the nut when the plurality of teeth engages the plurality of keeper teeth. The keeper has a radially inner side configured to engage a shaft to inhibit rotational movement of the nut relative to the shaft when the plurality of teeth engages the plurality of keeper teeth.

Claims

1. A lock nut system comprising:

a molded nut having a plurality of engaging teeth;

a powdered metal keeper having a plurality of keeper teeth engageable with said plurality of engaging teeth of said nut to inhibit movement of said keeper relative to said nut when said plurality of engaging teeth engages said plurality of keeper teeth;

said keeper having a radially inner side configured to engage a shaft to inhibit rotational movement of said nut relative to the shaft when said plurality of engaging teeth engages said plurality of keeper teeth and said radially inner side engages the shaft; and

a keeper retaining member connected to said keeper and engageable with said nut to hold said keeper axially such that said plurality of keeper teeth are engaged with said plurality of engaging teeth, said retaining member being formed of a material different than said keeper such that said retaining member is more flexible than said keeper.

2. The system of claim 1 wherein said inner side of said keeper comprises a shaft engaging member engageable in a shaft slot of the shaft to inhibit rotational movement of said nut relative to the shaft.

3. The system of claim 1 wherein said nut further comprises a slot for receiving a keeper retaining member.

4. The system of claim 3 wherein said keeper retaining member comprises at least one leg configured to be received in said slot.

5. The system of claim 4 wherein said keeper retaining member is configured to hold said keeper axially relative to said nut such that said plurality of engaging teeth and said plurality of keeper teeth are engaged when said at least one leg is received in said slot.

6. The system of claim 5 wherein said at least one leg comprises two legs elastically deformable toward one another to allow said retaining member to be attached to said nut by inserting said two legs in said slot.

7. The system of claim 5 wherein said keeper and said keeper retaining member are aligned in a plane substantially defined by an outer surface of said nut wherein said retainer member is formed of a material different than at least one of said nut and said keeper.

8. The system of claim 1 wherein said keeper comprises a keeper cavity configured to receive a keeper retaining member.

9. The system of claim 8 wherein said keeper retaining member comprises a nose portion, said keeper retaining member is received in said keeper cavity and said nose portion extends from said keeper cavity into a slot of said nut.

10. The system of claim 8 wherein said keeper retaining member extends through a first keeper cavity, extends into said slot, and extends into a second keeper cavity.

11. The system of claim 1 wherein said nut comprises a shoulder portion and said keeper is received on said shoulder portion such that said keeper is axially supported by said shoulder portion.

12. The system of claim 1 wherein said keeper comprises an axially projecting portion and said retaining member comprises a receiving opening, said projecting portion being received in said receiving opening to connect said keeper to said keeper retaining member.

13. The system of claim 1 wherein said nut comprises a keeper retaining member slot axially outside said engaging teeth.

14. The system of claim 13 wherein said keeper retaining member is received in said slot such that said slot and said retaining member are located in a same plane.

15. The system of claim 1 wherein said keeper retaining member has a leg configured to be received in said slot, said retaining member being formed of a material different than at least one of said nut and said keeper, such that said retaining member is more flexible than at least one of said keeper and said nut.

16. The system of claim 1 wherein said plurality of keeper teeth engages all of said teeth.

17. The system of claim 16 wherein said keeper retaining member comprises a disk having a plurality of projections for frictionally engaging said disk with said nut to retain said keeper such that said keeper teeth are engaged with said engaging teeth.

18. The system of claim 1 wherein said slot and said keeper retaining member are located in a same plane.

19. The system of claim 1 wherein said slot is located axially outside said engaging teeth.

20. The system of claim 19 wherein said plurality of keeper teeth engages all of said engaging teeth.

21. A lock nut system comprising:

a nut having a plurality of engaging teeth, a slot and an outer surface axially closest to said slot, said slot being located axially between said plurality of engaging teeth and said outer surface;

a keeper having a plurality of keeper teeth engageable with said plurality of engaging teeth to inhibit movement of said keeper relative to said nut when said plurality of engaging teeth engages said plurality of keeper teeth;

a keeper retaining member connected to said keeper and said keeper retaining member comprising at least one leg configured to be received in said slot;

said retaining member being formed of a different than said keeper such that said retaining member is more flexible than said keeper;

said keeper retaining member configured to hold said keeper axially such that said plurality of teeth and said plurality of keeper teeth are engaged when said at least one leg is received in said slot; and

said keeper having a radially inner side configured to engage a shaft to inhibit rotational movement of said nut relative to the shaft when said plurality of teeth engages said plurality of keeper teeth and said radially inner side engages the shaft.

22. The system of claim 21 wherein said inner side of said keeper comprises a shaft engaging member engageable in a shaft slot of the shaft to inhibit rotational movement of said nut relative to the shaft.

23. The system of claim 21 wherein said at least one leg comprises two legs elastically deformable toward one another to allow said retaining member to be attached to said nut by inserting said two legs in said slot.

24. The system of claim 21 wherein said keeper and said keeper retaining member are aligned in a plane substantially defined by an outer surface of said nut.

25. The system of claim 21 wherein said keeper comprises a keeper cavity and said keeper retaining member is received in said keeper cavity to connect said keeper to said keeper retaining member.

26. The system of claim 25 wherein said keeper retaining member comprises a nose portion, said nose portion extending from said keeper cavity into said slot of said nut.

27. The system of claim 26 wherein said keeper retaining member extends through said keeper cavity, extends into said slot, and extends into a second keeper cavity.

28. The system of claim 21 wherein said keeper comprises a projecting portion and said keeper retaining member comprises a receiving opening, said projecting portion being received in said receiving opening to connect said keeper to said keeper retaining member.

29. The system of claim 21 wherein said nut comprises a shoulder portion and said keeper is received on said shoulder portion such that said keeper is axially supported by said shoulder portion.

30. A lock nut system comprising:

a nut having a plurality of engaging teeth, an outer surface axially closest to said plurality of engaging teeth, and a shoulder;

a keeper having a plurality of keeper teeth engaging said plurality of engaging teeth to inhibit movement of said keeper relative to said nut;

said shoulder being substantially orthogonal to an axis of said nut, said shoulder abutting and axially supporting said keeper;

said keeper having a radially inner side configured to engage a shaft to inhibit rotational movement of said nut relative to the shaft when said plurality of engaging teeth engages said plurality of keeper teeth and said radially inner side engages the shaft a keeper retaining member engaged with said keeper and engageable with said nut to hold said keeper axially such that said plurality of keeper teeth are engaged with said plurality of engaging teeth, said retaining member being formed of a material different than said keeper such that said retaining member is more flexible than said keeper.

31. The system of claim 30 wherein said nut further comprises a circumferential rim, said keeper retaining member located at an axial center of said outer surface and engaging said rim, said keeper retaining member holding said keeper axially such that said plurality of engaging teeth and said plurality of keeper teeth are engaged and such that said keeper abuts said shoulder.