US3807534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction disc
Assignee: Bendix Corp
•
Filing: 1972-06-16
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Granted: 1974-04-30
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Expires: 1992-06-16
Abstract
Abstract A friction disc particularly adapted for use in an aircraft multiple disc brake having frictionally engageable rotor and stator discs one or more of which is provided with segments of high thermal capacity heat sink material characterized by relatively weak structural strength in tension and shear modes. A pair of annular metal plates are fixedly secured to a plurality of radially extending torque transmitting metal arms interposed between the plates in circumferentially spaced apart relationship thereby defining pockets adapted to slidably receive mating segments of heat sink material which protrude through circumferentially spaced apart openings in each of the metal plates. The protruding surfaces of the segments of heat sink material are adapted to slidably engage adjacent friction discs and may be provided with facings of friction material.
Inventors
- 👤 W Eldred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:08
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/02; F16D65/12; F16D65/122; F16D65/125; F16D65/126
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
169 words
A friction disc comprising; a pair of axially spaced-apart annular frame members each of which is provided with a plurality of circumferentially spaced apart openings; a plurality of circumferentially spaced apart radially extending arms interposed between said frame members and axially separating said spaced apart openings in each of said frame members; fastening means fixedly securing said frame members to said plurality of arms; said openings in one frame member being aligned with said openings in the other frame member; a groove completely surrounding said aligned openings and, in part, defined by parallel inner surfaces of said frame members adjacent said aligned openings and an edge of said radially extending arms separating said frame members; a plurality of solid friction segments each having oppositely disposed friction surfaces protruding through said aligned openings and provided with a continuous peripheral tongue portion slidably received by said groove; said tongue portion being slidably retained between said frame members and urged into engagement with said arm in response to frictional forces imposed thereon.
Claim 2
Dependent Claim
169 words
A friction disc comprising; a pair of axially spaced-apart annular frame members each of which is provided with a plurality of circumferentially spaced apart openings; a plurality of circumferentially spaced apart radially extending arms interposed between said frame members and axially separating said spaced apart openings in each of said frame members; fastening means fixedly securing said frame members to said plurality of arms; said openings in one frame member being aligned with said openings in the other frame member; a groove completely surrounding said aligned openings and, in part, defined by parallel inner surfaces of said frame members adjacent said aligned openings and an edge of said radially extending arms separating said frame members; a plurality of solid friction segments each having oppositely disposed friction surfaces protruding through said aligned openings and provided with a continuous peripheral tongue portion slidably received by said groove; said tongue portion being slidably retained between said frame members and urged into engagement with said arm in response to frictional forces imposed thereon.
Claim 3
Dependent Claim
79 words
A friction disc as claimed in claim 1 adapted for use in a wheel and disc brake assembly mounted in a fixed supporting axle and wherein: said friction disc is a rotor member; said arms are each provided with a transverse slot at the radial outward end thereof adapted to receive an associated key member fixedly secured to said wheel thereby providing for axial movement of said rotor member relative to said wheel and preventing relative rotational movement therebetween.
Claim 4
Dependent Claim
55 words
A friction disc as claimed in claim 1 adapted for use in a wheel and disc brake assembly and wherein: said friction disc is a stator member; said arms are each provided with a transverse slot at the radial inward end thereof adapted to receive an associated key member on a fixed wheel supporting axle.
Claim 5
Dependent Claim
32 words
A friction disc as claimed in claim 1, wherein: said tongue portion is deeper than said groove to permit universal sliding movement of said segment in the plane of said frame members.
Claim 6
Dependent Claim
32 words
A friction disc as claimed in claim 1, wherein: said frame members are formed of sheet metal and said arms separating the same are metal in the general form of an I.
Claim 7
Dependent Claim
32 words
A friction disc as claimed in claim 5, wherein: said I-shaped arms are provided with an intermediate portion having spaced apart radially extending edges and associated spaced apart diverging edges extending therefrom.
Claim 8
Dependent Claim
34 words
A friction disc as claimed in claim 6, wherein: said tongue portion bears against one of said radially extending edges and associated spaced apart divergiNg edges thereby placing said segment in a compression mode.
Claim 9
Dependent Claim
29 words
A friction disc as claimed in claim 1, wherein: said friction segments are formed of a material having high thermal capacity and being characteristically weak in shear and tension.
Claim 10
Dependent Claim
13 words
A friction disc as claimed in claim 8, wherein: said material is carbon.
Claim 11
Dependent Claim
29 words
A friction disc as claimed in claim 9, wherein: said carbon segments are provided with friction facings of a different material fixedly secured to said oppositely disposed surfaces thereof.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-29 | 1977-10-29 | 1978-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-29 | 1981-10-29 | 1982-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-29 | 1985-10-29 | 1986-04-30 | $7700.00 | Window Closed / Lapsed |