US4624348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roller retainer for brake assembly
Assignee: Meritor Heavy Vehicle Systems LLC
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Filing: 1981-09-28
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Granted: 1986-11-25
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Expires: 2001-09-28
Abstract
Abstract A roller retainer for a cam actuated vehicle brake assembly comprising a member preferably formed from spring wire to provide two substantially parallel legs with a tang at the end of each leg and a manual grip intermediate the legs. The tangs are seated in apertures provided to a dual web brake shoe and a portion of the member intermediate the manual grip and the tanged ends extends only partially around the roller so the manual grip and the tanged ends are disposed on the same side of a reference plane parallel to the legs and passing through the axis of the roller. This enalbes the retainer to be rotated about the apertures thereby allowing the roller to be safely removed from the brake shoe while the shoe remains in the assembly without the use of any tools.
Inventors
- 👤 William J. Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:46
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/14; F16D65/16; F16D65/22; F16D51/00; F16D51/16; F16D51/18; F16D51/20; F16D51/22; F16D65/02; F16D65/04; F16D65/08; F16D65/09; F16D2125/00; F16D2125/18; F16D2125/20; F16D2125/22; F16D2125/28; F16D2125/30
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
166 words
In a rotary cam actuated vehicle brake assembly including a pair of brake shoes with each brake shoe having a pair of spaced parallel webs, a rotary cam between adjacent ends of said brake shoes, and a roller type cam follower between said cam and said adjacent end of at least one of said brake shoes said cam follower having a pair of trunnions seated in open recesses provided at the end of said one brake shoe webs, the improvement comprising: a roller retainer member secured to said one brake shoe and having a manual grip and two substantially parallel legs, said manual grip and said legs located on one side of a reference plane parallel to said legs and passing through the axis of said cam follower and a portion of said member intermediate at least one of said legs and said manual grip on the other side of said reference plane formed to extend only partly around the circumference of a roller trunnion surface.
Claim 2
Dependent Claim
166 words
In a rotary cam actuated vehicle brake assembly including a pair of brake shoes with each brake shoe having a pair of spaced parallel webs, a rotary cam between adjacent ends of said brake shoes, and a roller type cam follower between said cam and said adjacent end of at least one of said brake shoes said cam follower having a pair of trunnions seated in open recesses provided at the end of said one brake shoe webs, the improvement comprising: a roller retainer member secured to said one brake shoe and having a manual grip and two substantially parallel legs, said manual grip and said legs located on one side of a reference plane parallel to said legs and passing through the axis of said cam follower and a portion of said member intermediate at least one of said legs and said manual grip on the other side of said reference plane formed to extend only partly around the circumference of a roller trunnion surface.
Claim 3
Dependent Claim
33 words
The roller retainer member defined by claim 1 wherein said portion of said member intermediate said leg and said manual grip is formed to resiliently embrace said part of said roller trunnion surface.
Claim 4
Dependent Claim
20 words
The roller retainer member defined by claim 2 wherein said portion of said member is formed from a resilient material.
Claim 5
Dependent Claim
19 words
The roller retainer member defined by claim 2 wherein said portion of said member is formed from spring wire.
Claim 6
Dependent Claim
57 words
The roller retainer defined by claim 1 wherein said member is formed from a continuous length of spring wire and a portion of said member intermediate each leg and said manual grip on said other side of said reference plane is formed to extend only partly around and resiliently embrace the circumference of a roller trunnion surface.
Claim 7
Dependent Claim
160 words
In combination, a brake shoe having a dual web structure, said webs being formed with similar and laterally aligned open end recesses and an aperature adjacent each of said recesses, a cam follower having a roller intermediate the webs and trunnions supported in said recesses and a roller retainer comprised of a manual grip and a pair of spring legs extending therefrom, each leg having an end formed as a tang seated in one of said apertures and a portion of said retainer intermediate said manual grip and each leg formed to extend partially around one of said roller trunnions and to return around that same portion of said roller trunnion whereby said manual grip and said legs are disposed on the same side of a reference plane parallel to said legs and passing through the axis of said roller and said manual grip can be rotated about said apertures to free said cam follower without traversing said reference plane.
Claim 8
Dependent Claim
160 words
In combination, a brake shoe having a dual web structure, said webs being formed with similar and laterally aligned open end recesses and an aperature adjacent each of said recesses, a cam follower having a roller intermediate the webs and trunnions supported in said recesses and a roller retainer comprised of a manual grip and a pair of spring legs extending therefrom, each leg having an end formed as a tang seated in one of said apertures and a portion of said retainer intermediate said manual grip and each leg formed to extend partially around one of said roller trunnions and to return around that same portion of said roller trunnion whereby said manual grip and said legs are disposed on the same side of a reference plane parallel to said legs and passing through the axis of said roller and said manual grip can be rotated about said apertures to free said cam follower without traversing said reference plane.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-11-24 | 1990-05-26 | 1990-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-24 | 1994-05-26 | 1994-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-24 | 1998-05-26 | 1998-11-25 | $7700.00 | Window Closed / Lapsed |