Thrust nut lock retainer

• US 4,292,000 A
• Filed: 11/16/1979
• Issued: 09/29/1981
• Est. Priority Date: 11/16/1979
• Status: Expired due to Term

• Current Assignee: Allison Engine Company, Inc.
• Original Assignee: General Motors Corporation (Motors Liquidation Co. GUC Trust)
• Inventors: Holcomb, Warren N., Baldwin, Bryce R., Brady, Laurence M.
• Primary Examiner(s): Shedd, Wayne L.
• Application Number:
  US06/095,091
• Time in Patent Office: 683 Days
• Field of Search: 403/320, 403/27, 403/406, 403/409, 403/316, 411/201, 411/212, 411/273, 285/89, 285/92
• US Class Current: 403/320
• CPC Class Codes: F16B 2200/73 Cam locks or thread locks
• CPC Class Codes: F16B 39/10 by a plate, spring, wire or ring immovable with regard to the bolt or object and mainly perpendicular to the axis of the boltF16B39/08 takes precedence
• CPC Class Codes: Y10T 403/20 with indicator or inspection means

Abstract

A propeller shaft nut lock assembly for retention of a propeller shaft bearing assembly includes an externally threaded shaft surface threadably receiving a thrust nut that includes an outboard undercut groove therein to receive a cup lock that is shifted to locate an eccentric segment on the cup lock into interlocking engagement with the undercut groove when a thrust nut lock centers the cup lock on the assembly, and wherein the cup lock includes a plurality of axially extending bendable tangs to indicate that the thrust nut lock assembly is seated in load transfer relationship with the bearing assembly.

Claims

1. A propeller shaft nut lock assembly for maintaining a propeller shaft bearing assembly in place within a bearing housing comprising:

an externally threaded surface on a propeller shaft located outboard of the bearing assembly, a thrust nut threaded on said shaft to axially hold the bearing assembly in place within the bearing housing, said thrust nut including an undercut locking groove therein and an outboard extension with a splined surface, said shaft having a splined surface, a cup lock slidably positioned over said outboard extension and including an eccentric flange thereon initially radially positioned out of said lock groove and including a centering peripheral flange thereon initially located eccentrically with respect to the outer surface of said shaft, a thrust nut lock ring slidably mounted on said shaft engaging the centering peripheral flange to center it with respect to the shaft and to shift said eccentric flange into interlocked engagement with said groove, said thrust nut lock ring further having splined surfaces thereon engaging the two aforementioned splined surfaces, and coacting means to indicate axial seated engagement of said thrust nut lock ring against said thrust nut and radial shift of the eccentric flange into its interlocked engagement with the locking groove when said thrust nut is properly positioned with respect to the bearing assembly.

2. A propeller shaft nut lock assembly for maintaining a propeller shaft bearing assembly in place within a bearing housing comprising:

an externally threaded surface on a propeller shaft located outboard of the bearing assembly, a thrust nut threaded on said shaft to axially hold the bearing assembly in place within the bearing housing, said thrust nut including an undercut locking groove therein and an outboard extension with a splined surface, said shaft having a splined surface, a cup lock slidably positioned over said outboard extension and including an eccentric flange thereon initially radially positioned out of said lock groove and including a centering peripheral flange thereon initially located eccentrically with respect to the outer surface of said shaft, a thrust nut lock ring slidably mounted on said shaft engaging the centering peripheral flange to center it with respect to the shaft and to shift said eccentric flange into interlocked engagement with said groove, said thrust nut lock ring further having splined surfaces thereon engaging the two aforementioned splined surfaces, said cup lock having circumferentially spaced axially extending tangs thereon, said thrust nut lock ring having end slots thereon, said tangs being bendable into said slots to indicate axial seated engagement of said thrust nut lock ring against said thrust nut and radial shift of the eccentric flange into its interlocked engagement with the locking groove when said thrust nut is properly positioned with respect to the bearing assembly.