Retaining ring retention system and method

Patent metadata

Field	Value
Publication number	US-9933005-B2
Application number	US-201214649659-A
Country	US
Kind code	B2
Filing date	Dec 13, 2012
Priority date	Dec 13, 2012
Publication date	Apr 3, 2018
Grant date	Apr 3, 2018

Abstract

The present invention relates to a retained member configured to prevent centrifugal force from disassociating a retaining ring provided with lugs from a groove located on a rotatable shaft when securing the retained member to the rotatable shaft and rotating with the shaft. The retained member includes a substantially annular portion and a retention lip provided with a cutout portion. The substantially annular portion defines an opening sized to receive the rotatable shaft so that the retained member is rotatable with the shaft. The cutout portion is configured to accommodate the lugs when in an installing position as the retained member is snap fit into the groove.

First claim

I claim:

1. A method for installing a retaining ring and a retained member on a rotatable shaft provided with a groove, comprising the steps of:
providing the retaining ring that includes lugs provided with an installed position and an installing position, wherein:
a distance between the lugs is greater when in the installing position than in the installed position;

providing a retained member that is provided with a semi-circular retention lip that:
is adapted to circumscribe the lugs when in the installed position so that the retention lip prevents the lugs from being forced apart by centrifugal force such that the retaining ring may disassociate from the groove; and
includes a cutout portion, which separates first and second ends of the retention lip and accommodates the lugs when in the installing position;

installing the retained member around the rotatable shaft so that the retained member is rotatable with the rotatable shaft;
positioning the lugs of the retaining ring within the cutout portion of the retained member by forcing the lugs apart to provide the lugs with the installing position;
snap fitting the retaining ring in the groove so that the retaining ring is rotatable with the rotatable shaft and the retaining ring secures the retained member to the rotatable shaft;
rotating the retaining ring relative to the installing position to provide the installed position, whereat the retention lip circumscribes the lugs so that the retention lip prevents the lugs from being forced apart by centrifugal force such that the retaining ring may disassociate from the groove.

2. The method for installing the retaining ring and the retained member on the rotatable shaft provided with the groove according to claim 1 , wherein the retained member is a thrust washer.

3. The method for installing the retaining ring and the retained member on the rotatable shaft provided with the groove according to claim 1 , wherein the rotatable shaft is a component of a vehicle power train.

Assignees

• Mack Trucks
• Volvo Lastvagnar Ab

Inventors

• Kahl Michael E

Classifications

• F16B21/186 Primary

  external, i.e. with contracting action · CPC title

• B23P19/084

  for placing resilient or flexible rings, e.g. O-rings, circlips · CPC title

• F16B1/02 Primary

  Means for securing elements of mechanisms after operation (means for bringing members to rest F16D) · CPC title

• F16B43/00 Primary

  Washers or equivalent devices; Other devices for supporting bolt-heads or nuts (circlips F16B21/18; {for indicating tensile load F16B31/02; forming a whole with the bolt or nut F16B33/00; locking bolts or nuts by means of a fixed plate or ring, or washer-like resilient plates F16B39/10, F16B39/24}) · CPC title