MULTI-PART LOCKING NUT

• US 20130239395A1
• Filed: 03/15/2013
• Published: 09/19/2013
• Est. Priority Date: 03/16/2012
• Status: Abandoned Application

• Current Assignee: Industrial Nut Corp.
• Original Assignee: Industrial Nut Corp.
• Inventors: Schuster, Gary L., Springer, John William
• Application Number:
  US13/832,959
• Publication Number:
  US 20130239395A1
• Time in Patent Office: Days
• US Class Current: 29/464
• CPC Class Codes: F16B 39/04 with a member penetrating the screw-threaded surface of at least one part, e.g. a pin, a wedge, cotter-pin, screw
• CPC Class Codes: Y10T 29/49895 Associating parts by use of aligning means [e.g., use of a drift pin or a "fixture"]

Abstract

A multi-part locking nut assembly has a lock nut having a raised center portion and a flange having a plurality of holes therethrough, a washer having a protrusion which is matingly received by a notch in a spindle; the washer having a plurality of holes therethrough; and at least one locking pin which is slidably received by one of the plurality of holes of the nut and one of the plurality of holes of the washer; and a resilient biasing member which retains the locking pin in place.

Claims

1. A multi-part locking nut assembly, comprising:

a nut having a raised center portion and a flange having a plurality of holes therethrough;

a washer having a protrusion which is matingly received by a notch in an associated spindle;

said washer having a plurality of holes therethrough; and

at least one locking pin which is slidably received by one of said plurality of holes of said nut and one of said plurality of holes of said washer; and

a resilient biasing member which retains said at least one locking pin in place.

2. The locking nut assembly of claim 1, wherein said nut raised center portion comprises internal threads.

3. The locking nut assembly of claim 1, wherein said nut is fabricated from metal with an HRC of 28-32.

4. The locking nut assembly of claim 1, wherein said raised portion comprises at least one notch for receiving an associated tightening tool.

5. The locking nut assembly of claim 1, wherein said protrusion of said washer is received by said notch of said associated spindle to prevent rotational movement of said washer.

6. The locking nut assembly of claim 1, wherein at least one of said openings of said nut aligns with at least one of said openings of said washer so that said locking pin can slide through said holes retaining said nut and said washer together.

7. The locking nut assembly of claim 1, wherein said resilient biasing member comprises a snap ring having opposed ends which are resiliently biased to a closed position.

8. The locking nut assembly of claim 7, wherein said snap ring opposed ends comprise openings for prying said ends to an open position.

9. The locking nut assembly of claim 8, wherein said snap ring comprises a plurality of notches and ridges for facilitating prying said snap ring to an open position.

10. The locking nut assembly of claim 1, wherein said at least one locking pin comprises a first locking pin and a second locking pin which are inserted into two of said plurality of holes of said nut and said washer.

11. A method of assembling a lock nut, comprising:

assembling a washer on a spindle by aligning a protrusion of said washer with a groove on said spindle;

threading a lock nut onto said spindle until said nut contacts said washer;

aligning at least one hole in said nut with at least one hole in said washer;

inserting a pin through said at least one hole of said washer and said at least one hole of said lock nut; and

inserting a resilient biasing member onto said nut to retain said pin onto said nut and washer.

12. The method of claim 11, wherein said nut comprises a raised center portion having internal threads.

13. The method of claim 11, wherein said nut is fabricated from metal with an HRC of 28-32.

14. The method of claim 12, wherein said raised portion comprises at least one notch for receiving an associated tightening tool.

15. The method of claim 11, wherein said protrusion of said washer is received by said groove of said spindle to prevent rotational movement of said washer.

16. The method of claim 11, wherein said resilient biasing member comprises a snap ring having opposed ends which are resiliently biased to a closed position.

17. The method of claim 16, wherein said snap ring opposed ends comprise openings for prying said ends to an open position.

18. The method of claim 17, wherein said snap ring comprises a plurality of notches and ridges for facilitating prying said snap ring to an open position.