US3653472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disc brakes
Assignee: Dunlop Co Ltd
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Filing: 1970-09-30
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Granted: 1972-04-04
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Expires: 1990-09-30
Abstract
Abstract In an aircraft brake a brake thrust transmission member is arranged between a stack of friction members and a circular arrangement of spaced brake actuators to provide even circumferential distribution of the localised thrusts exerted by the actuators. The transmission member has at least one deformable section of frusto-conical shape, an annular ring engaged by the actuators, and another annular ring, which may have two or more co-planar surfaces, for engagement with a friction member.
Inventors
- 👤 Frederick S Dowell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:22
CPC Classifications
F; F16; F16D; F16D55/00; F16D55/24; F16D55/26; F16D55/36; F16D55/40; F16D2055/0004; F16D2055/0058
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
100 words
A disc brake comprising a pair of friction members rotatable relative to each other and mounted for movement into frictional engagement with each other, a plurality of brake actuators located at spaced-apart positions for applying a brake actuating force to one of the frictional members, and thrust transmission means for transmitting thrust from the actuators to the respective friction member, the thrust transmission means comprising two concentric annuli of differing diameters interconnected by deformable connecting means, whereby a brakeapplying force applied by the actuators to one of the annuli is transmitted to the other annulus through the deformable connecting means.
Claim 2
Dependent Claim
100 words
A disc brake comprising a pair of friction members rotatable relative to each other and mounted for movement into frictional engagement with each other, a plurality of brake actuators located at spaced-apart positions for applying a brake actuating force to one of the frictional members, and thrust transmission means for transmitting thrust from the actuators to the respective friction member, the thrust transmission means comprising two concentric annuli of differing diameters interconnected by deformable connecting means, whereby a brakeapplying force applied by the actuators to one of the annuli is transmitted to the other annulus through the deformable connecting means.
Claim 3
Dependent Claim
26 words
A disc brake according to claim 1 wherein the Thrust transmission means comprises a first annulus and a second annulus axially spaced relative to each other.
Claim 4
Dependent Claim
29 words
A disc brake according to claim 1 wherein the thrust transmission means comprises a first annulus and a second annulus inter-connected by a deformable connecting means of frusto-conical shape.
Claim 5
Dependent Claim
34 words
A disc brake according to claim 1 wherein a first annulus is arranged to transmit brake actuating thrust from the brake actuators through the connecting means to a second annulus adjacent a friction member.
Claim 6
Dependent Claim
42 words
A disc brake according to claim 1 wherein the thrust transmission means comprises an inner second annulus and an outer second annulus respectively connected to a first annulus by means of an inner deformable connecting means and an outer deformable connecting means.
Claim 7
Dependent Claim
47 words
A disc brake according to claim 5 wherein the diameter of the outer connecting means is greater adjacent the outer second annulus than adjacent the first annulus, and the diameter of the inner connecting means is greater adjacent the inner second annulus than adjacent the first annulus.
Claim 8
Dependent Claim
27 words
A disc brake according to claim 1 wherein the thrust transmission means comprises three concentric annuli and two connecting means, at least one connecting means being deformable.
Claim 9
Dependent Claim
42 words
A disc brake according to claim 7 wherein a first annulus is connected by a first deformable connecting means to a second annulus, the second annulus being connected by a second deformable connecting means to a third annulus adjacent a friction member.
Claim 10
Dependent Claim
40 words
A disc brake according to claim 7 wherein a first annulus is connected by a deformable first connecting means to a second annulus, the second annulus engaging a second connecting means arranged in the form of an annular thrust ring.
Claim 11
Dependent Claim
21 words
A disc brake according to claim 9 wherein the thrust ring comprises at least two annuli engagement with a friction member.
Claim 12
Dependent Claim
56 words
A disc brake according to claim 10 wherein the thrust ring is generally V-shaped in radial cross-section, the ends of the two limbs of the V being formed with the two annular surfaces being an inner third annulus and an outer third annular adjacent the friction member, and the apex of the V standing proud thereof.
Claim 13
Dependent Claim
23 words
A disc brake according to claim 11 wherein the apex region of the thrust ring is thickened to receive and transmit brake-applying thrusts.
Claim 14
Dependent Claim
26 words
A disc brake according to claim 12 wherein the apex region of the thrust ring is provided with an annular recess to receive the second annulus.
Claim 15
Dependent Claim
23 words
A disc brake according to claim 8 wherein the second annulus is the annulus furthest from the friction member adjacent the third annulus.
Claim 16
Dependent Claim
38 words
A disc brake according to claim 14 wherein openings, one for each brake actuator, are formed in the first connecting means such that the piston of each brake actuator may extend therethrough for engagement with the first annulus.
Claim 17
Dependent Claim
23 words
A disc brake according to claim 8 wherein the first annulus is the annulus furthest from the friction member adjacent the third annulus.
Claim 18
Dependent Claim
22 words
A disc brake according to claim 1 wherein an annulus is formed as part of the material of a deformable connecting means.
Claim 19
Dependent Claim
20 words
A disc brake according to claim 1 wherein an annulus is connected rigidly or otherwise to a deformable connecting means.
Claim 20
Dependent Claim
19 words
A disc brake according to claim 1 wherein a deformable connecting means is in the form of a spider.
Claim 21
Dependent Claim
77 words
A disc brake according to claim 1 wherein the pressure applied by the thrust transmission means to a friction member acts on the friction member at an effective radius intermediate between the inner radius and the outer radius of the friction pad of the friction member such that the distributed pressure over the surface of the friction pad causes no rolling moment on the friction member about the effective line of engagement with the thrust transmission means.
Claim 22
Dependent Claim
32 words
A disc brake according to claim 1 wherein the piston of each brake actuator is located radially inward of the effective radius at which Brake-applying thrust is applied to a friction member.
Claim 23
Dependent Claim
34 words
A disc brake according to claim 1 wherein the piston of each brake actuator is located at the same radius as the effective radius at which brake-applying thrust is applied to a friction member.
Claim 24
Dependent Claim
62 words
A disc brake according to claim 2 wherein the thrust transmission means is located in angular relationship to the brake actuators by means of one annulus axially slidably mounted and keyed at its radially inner periphery so as to engage splines on a torque tube, the torque tube being secured to a hub on which the plurality of brake actuators is mounted.
Claim 25
Dependent Claim
105 words
A brake assembly according to claim 1 in which a torque tube is secured to a non-rotatable annular hub on which the plurality of brake actuators is mounted, a series of annular stator friction members being axially slidably mounted, each at its inner periphery, so as to engage splines on the torque tube, said friction members being interleaved by a corresponding series of rotor friction members axially slidably mounted and keyed, each at its radially outer periphery, to a wheel for rotation therewith, a reaction member in the form of a flange being secured to the end of the torque tube remote from the hub.
Claim 26
Dependent Claim
16 words
A brake assembly according to claim 24 wherein the reaction member is of a frusto-conical shape.
Claim 27
Dependent Claim
13 words
A disc brake according to claim 1 arranged for use as a clutch.
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) | 1975-04-04 | 1975-10-04 | 1976-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-04 | 1979-10-04 | 1980-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-04 | 1983-10-04 | 1984-04-04 | $7700.00 | Window Closed / Lapsed |