US3964579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railway brakes
Assignee: Girling Ltd
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Filing: 1975-08-29
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Granted: 1976-06-22
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Expires: 1995-08-29
Abstract
Abstract A vehicle brake comprises a plurality of elongated friction members for engagement with the brake rotor, the friction members being laterally supported close to their rotor-engaging ends, and an actuating mechanism having an elongated thrust-transmitting member substantially co-extensive with the friction members and an abutment member carried by the thrust-transmitting member and engageable with the friction members.
Inventors
- 👤 Anthony William Harrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:52
CPC Classifications
B; B61; B61H; B61H5/00; B61H13/00; F; F16; F16D; F16D65/00; F16D65/02; F16D65/04; F16D65/092; F16D65/14; F16D65/28; F16D65/38; F16D65/40; F16D65/42; F16D65/46; F16D69/00; F16D2125/00; F16D2125/18; F16D2125/58; F16D2125/66; F16D2125/70
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
343 words
A brake comprising a rotor having a friction surface thereon, means for braking said rotor by applying a braking torque to said friction surface comprising an elongated body of friction material moveable into engagement with the friction surface to apply the brake and which prior to use has a length in its direction of movement substantially greater than its dimension transverse to its direction of movement, said body being disposed wholly on one side of said friction surface and having and second opposed ends, a support for said body of friction material also disposed wholly to said one side of said rotor friction surface and aligned therewith, said support terminating in a torque sustaining end part facing the friction surface of the rotor in close spaced adjacency thereto and laterally supporting said body of friction material adjacent its first end to sustain braking torque exerted thereon when it is moved into engagement with the frictional surface of the rotor, and means for moving said body towards and away from said friction surface to apply and release the brake comprising an axially movable adjusting member extending at least partially alongside said body of friction material to said one side of said rotor friction surface, an element having an axially adjustable connection with said adjusting member and extending rigidly laterally from said connection into operative engagement with the second opposed end of said friction material, means exclusively to said one side of said rotor friction surface for selectively exerting an axial force on said adjusting member in the direction of said rotor friction surface, said element transmitting said force from said adjusting member to said body of friction material for moving its first end into braking engagement with said rotor friction surface in response to the axial force exerted on said adjusting member, and means for operating said adjusting member to move said axially adjustable connection and said element relative to said adjusting member in the direction of said rotor surface to adjust the position of the body of friction material relative to said support.
Claim 2
Dependent Claim
343 words
A brake comprising a rotor having a friction surface thereon, means for braking said rotor by applying a braking torque to said friction surface comprising an elongated body of friction material moveable into engagement with the friction surface to apply the brake and which prior to use has a length in its direction of movement substantially greater than its dimension transverse to its direction of movement, said body being disposed wholly on one side of said friction surface and having and second opposed ends, a support for said body of friction material also disposed wholly to said one side of said rotor friction surface and aligned therewith, said support terminating in a torque sustaining end part facing the friction surface of the rotor in close spaced adjacency thereto and laterally supporting said body of friction material adjacent its first end to sustain braking torque exerted thereon when it is moved into engagement with the frictional surface of the rotor, and means for moving said body towards and away from said friction surface to apply and release the brake comprising an axially movable adjusting member extending at least partially alongside said body of friction material to said one side of said rotor friction surface, an element having an axially adjustable connection with said adjusting member and extending rigidly laterally from said connection into operative engagement with the second opposed end of said friction material, means exclusively to said one side of said rotor friction surface for selectively exerting an axial force on said adjusting member in the direction of said rotor friction surface, said element transmitting said force from said adjusting member to said body of friction material for moving its first end into braking engagement with said rotor friction surface in response to the axial force exerted on said adjusting member, and means for operating said adjusting member to move said axially adjustable connection and said element relative to said adjusting member in the direction of said rotor surface to adjust the position of the body of friction material relative to said support.
Claim 3
Dependent Claim
60 words
The brake of claim 1 wherein the support and said body of friction material are disposed to said one side of said rotor friction surface so that said support, and the axis and ends of the friction material are within the periphery of said rotor and in substantial alignment with an annular portion of the friction surface of said rotor.
Claim 4
Dependent Claim
17 words
The brake according to claim 1 wherein said elongated body of frictional material is a unitary body.
Claim 5
Dependent Claim
20 words
The brake according to claim 1 wherein said support is at a constant fixed distance from said rotor friction surface.
Claim 6
Dependent Claim
306 words
A brake comprising a rotor having a friction surface thereon, an elongated body of friction material moveable into engagement with the friction surface to apply the brake and which prior to use has a length in its direction of movement substantially greater than its dimension transverse to its direction of movement and having at one end a friction face engageable with said friction surface of said rotor, a support adjacent said rotor and said one end wholly to one side of said friction surface and laterally supporting said one end so that it is facing said friction surface in close adjacency thereto with the axis of the elongated body of friction material extending away from said surface to said one side of said rotor friction surface, an axially movable, elongated adjusting member extending at least partially alongside said body of friction material and being disposed wholly to said one side of said friction surface of said rotor, an element having an axially adjustable connection with said adjusting member and extending rigidly laterally from said connection for operative engagement with the opposed end of said friction material, means to one side of said friction surface for selectively exerting an axial force on said elongated adjusting member in the direction of said rotor friction surface, said element transmitting said force from said adjusting member to said body of friction material for moving said friction face at said one end of said body of friction material into braking engagement with said rotor surface in response to the axial force exerted on said adjusting member, and means for operating said adjusting member to move said element relative thereto in the direction of said rotor friction surface to adjust the position of the body of friction material relative to said surface to compensate for wear of said friction material during use.
Claim 7
Dependent Claim
306 words
A brake comprising a rotor having a friction surface thereon, an elongated body of friction material moveable into engagement with the friction surface to apply the brake and which prior to use has a length in its direction of movement substantially greater than its dimension transverse to its direction of movement and having at one end a friction face engageable with said friction surface of said rotor, a support adjacent said rotor and said one end wholly to one side of said friction surface and laterally supporting said one end so that it is facing said friction surface in close adjacency thereto with the axis of the elongated body of friction material extending away from said surface to said one side of said rotor friction surface, an axially movable, elongated adjusting member extending at least partially alongside said body of friction material and being disposed wholly to said one side of said friction surface of said rotor, an element having an axially adjustable connection with said adjusting member and extending rigidly laterally from said connection for operative engagement with the opposed end of said friction material, means to one side of said friction surface for selectively exerting an axial force on said elongated adjusting member in the direction of said rotor friction surface, said element transmitting said force from said adjusting member to said body of friction material for moving said friction face at said one end of said body of friction material into braking engagement with said rotor surface in response to the axial force exerted on said adjusting member, and means for operating said adjusting member to move said element relative thereto in the direction of said rotor friction surface to adjust the position of the body of friction material relative to said surface to compensate for wear of said friction material during use.
Claim 8
Dependent Claim
25 words
The brake according to claim 5 wherein said means for exerting an axial force is arranged to exert a compressive force on said adjusting member.
Claim 9
Dependent Claim
51 words
The brake according to claim 5, wherein said adjusting member and said body of friction material are received within a housing, and wherein said support comprises the sides of a transverse opening in said housing corresponding to the cross-sectional area of said friction member substantially transverse to its direction of movement.
Claim 10
Dependent Claim
45 words
The brake according to claim 7 wherein said adjusting member is an elongate rotatable screw member, said element having screw threaded engagement with said screw member, and means in said housing for restricting said element to linear movement upon rotary movement of said screw member.
Claim 11
Dependent Claim
41 words
The brake according to claim 8 wherein said element comprises an abutment member adapted to abut the end of said body of friction material remote from said one end thereof upon axial movement of said screw member towards said rotor surface.
Claim 12
Dependent Claim
26 words
The brake according to claim 8 including automatic adjusting means coupled to said screw member for effecting rotation thereof upon predetermined wear of said friction material.
Claim 13
Dependent Claim
51 words
The brake according to claim 8 including a tube carried by said element and housing said rotatable screw member, said tube being of abradable material and being urged into engagement with said rotor friction surface by said element to be worn away as said friction material is worn away during use.
Claim 14
Dependent Claim
12 words
The brake according to claim 7 wherein said housing is rigidly fixed.
Claim 15
Dependent Claim
25 words
The brake according to claim 5 wherein the longitudinal axis of said friction material is substantially parallel with the axis of rotation of said rotor.
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) | 1979-06-22 | 1979-12-22 | 1980-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-22 | 1983-12-22 | 1984-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-22 | 1987-12-22 | 1988-06-22 | $7700.00 | Window Closed / Lapsed |