Patent US3754624A successfully refreshed from Google Patents.
US3754624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible key for disc brake
Assignee: Bendix Corp
•
Filing: 1971-09-17
•
Granted: 1973-08-28
•
Expires: 1991-09-17
Abstract
Abstract A disc brake having a plurality of force transmitting flexible key members interposed in circumferentially spaced-apart relationship between a wheel and rotor disc and/or stator disc and fixed support wherein the key members are adapted to flex under force load to thereby distribute the force load substantially equally between the plurality of key members.
Inventors
- 👤 W Eldred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:57
CPC Classifications
F; F16; F16D; F16D55/00; F16D55/24; F16D55/26; F16D55/36; F16D55/40; F16D65/00; F16D65/02; F16D65/12; F16D65/123; F16D65/78; F16D65/84; F16D2055/0004; F16D2055/0058; F16D2065/13; F16D2065/134; F16D2065/1348; F16D2065/1356; F16D2065/1368; F16D2065/1392; F16D2065/1396; F16D65/125; F16D65/126; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7018; Y10T403/7021; Y10T403/7022; Y10T74/00; Y10T74/19; Y10T74/1987; Y10T74/19893; Y10T74/19907
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
191 words
Flexible force transmitting key apparatus particularly adapted for use in a disc brake having a plurality of frictionally engageable annular members, at least one of which is rotatably driven by a wheel member and another of which is rotatably fixed to a fixed support member, said key apparatus comprising: a plurality of circumferentially spaced apart resilient key members each defined by a tubular metal member extending perpendicular to said annular members and interposed between one of said wheel and fixed support members and its associated annular member for providing the sole resistance to relative rotational movement therebetween; fastening means fixedly securing said tubular metal member to said one of said wheel and fixed support members; and a recess formed in said annular member and adapted to receive said tubular metal member; said plurality of resilient key members each being independently engageable with said one of said wheel and fixed support members and associated annular member and adapted to deform under force load to an extent permitting engagement of all of said resilient key members with both of said one of said wheel and fixed support members and said associated annular member.
Claim 2
Dependent Claim
191 words
Flexible force transmitting key apparatus particularly adapted for use in a disc brake having a plurality of frictionally engageable annular members, at least one of which is rotatably driven by a wheel member and another of which is rotatably fixed to a fixed support member, said key apparatus comprising: a plurality of circumferentially spaced apart resilient key members each defined by a tubular metal member extending perpendicular to said annular members and interposed between one of said wheel and fixed support members and its associated annular member for providing the sole resistance to relative rotational movement therebetween; fastening means fixedly securing said tubular metal member to said one of said wheel and fixed support members; and a recess formed in said annular member and adapted to receive said tubular metal member; said plurality of resilient key members each being independently engageable with said one of said wheel and fixed support members and associated annular member and adapted to deform under force load to an extent permitting engagement of all of said resilient key members with both of said one of said wheel and fixed support members and said associated annular member.
Claim 3
Dependent Claim
53 words
Flexible force transmitting key apparatus as claimed in claim 1 wherein: said fastening means includes a backing member bearing against a portion of said tubular metal member and screw means extending through said backing member and said tubular metal member into threaded engagement with said one of said wheel and fixed support members.
Claim 4
Dependent Claim
75 words
Flexible force transmitting key apparatus as claimed in claim 1 wherein: said tubular metal member is defined by spaced apart parallel tubular metal portions joined by wall means integRal therewith; said one of said wheel and fixed support members is provided with an axially extending support member; said fastening means fixedly securing said wall means to said support member; said recess formed in said annular member adapted to receive said spaced apart tubular metal portions.
Claim 5
Dependent Claim
52 words
Flexible force transmitting key apparatus as claimed in claim 1 wherein: said plurality of resilient key members are fixedly secured to said wheel member; and arcuate heat shield means interposed between said plurality of resilient key members and said wheel acts to minimize heat transfer from said annular members to said wheel.
Claim 6
Dependent Claim
34 words
Flexible force transmitting key apparatus as claimed in claim 1 wherein: said tubular metal member is provided with a longitudinal slot defining spaced apart first and second flexible wall portions of said tubular member.
Claim 7
Dependent Claim
43 words
Flexible force transmitting key apparatus as claimed in claim 5 wherein: said first wall portion is engaged by said annular member and urged into engagement with said second wall portion to cause an increase in the effective spring rate of said tubular member.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |