US3889784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal caliper brake
Assignee: Horton Manufacturing Co Inc
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Filing: 1974-02-28
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Granted: 1975-06-17
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Expires: 1994-02-28
Abstract
Abstract An internal caliper brake includes a rotor including an annular support for securement to a shaft to be braked, the annular support mounting an annular U-shaped housing having an annular Ushaped cavity having spaced opposed friction surfaces on the opposed walls of the cavity. The side walls of the housing and the outer annular base wall thereof each have a multiplicity of openings and each have fins formed thereon. A stator portion includes an annular base member mounting a first annular piston within the cavity, the first piston carrying an annular flange overlying the mounting to form an annular cylinder within the annular cavity. A second annular piston is mounted in the cylinder with springs for normally urging the pistons together with friction rings carried by each of the pistons for engagement with the friction surfaces of the U-shaped cavity. Also, bearings rotatably mount the rotor on the stator together with a bracket maintain the stator stationary, and springs are mounted on the stator for a spring return of the brake.
Inventors
- 👤 James V Hanks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:23
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/78; F16D65/84; F16D65/847; F16D55/00; F16D55/02; F16D55/04; F16D55/06; F16D55/10; F16D69/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
496 words
An internal caliper brake comprising: a. a rotor portion including an annular support for securement to a shaft to be braked, b. said annular support mounting an annular U-shaped housing having a radially extended first disc portion, an annular base wall and a second disc portion spaced from said first disc portion which forms c. a U-shaped annular cavity having spaced opposed friction surfaces in the form of said first and second disc portions, d. a stator portion including an annular base member having e. means for mounting f. a first annular piston within said cavity, said mounting means for the piston including an annular flange on said annular base member upon which said piston is slidable, g. said first piston carrying an annular flange overlying said mounting means to form h. an annular cylinder within said annular cavity, i. a second annular piston mounted in said cylinder, j. means for normally urging said pistons together which includes an annular flange formed on the inner annular edge of said second piston, k. said flange of said second piston having a multiplicity of holes therethrough, l. said firSt piston includes an annular flange formed on the inner annular edge, m. said inner flange of said first piston having a multiplicity of holes, n. said annular flange of said annular base member having a multiplicity of holes, o. a pin mounted in the holes of said flanges of said pistons and the holes of said annular flange of said annular base member, p. shoulder means formed on the outer end of each of said pins, q. a coil spring mounted on each of said pins between said shoulder means and said flange of said second piston to normally thereby urge the pistons together, r. friction means carried by each of said pistons for engagement with the opposed friction surfaces of said U-shaped cavity, s. means rotatably mounting said rotor on said stator including a bearing mounted between said annular base member of said stator and said annular support of said rotor, t. means for maintaining said stator stationary, u. means for mounting said annular support of said rotor on a shaft to be braked, v. means carried by said annular housing for dissipating heat from the brake through the annular cavity and out said annular housing including a multiplicity of holes formed in said first disc portion of said annular housing, w. a multiplicity of holes formed in said second disc portion of said annular housing, x. a multiplicity of holes formed in said annular base wall of said annular housing, y. fins mounted on said first disc portion, said second disc portion and said annular base wall, z. said friction means of said pistons having grooves therein whereby upon a braking of the device air passes inwardly of said holes in said first and second disc portions, through said grooves of said friction means and out said holes of said annular base wall of said annular housing.
Claim 2
Dependent Claim
496 words
An internal caliper brake comprising: a. a rotor portion including an annular support for securement to a shaft to be braked, b. said annular support mounting an annular U-shaped housing having a radially extended first disc portion, an annular base wall and a second disc portion spaced from said first disc portion which forms c. a U-shaped annular cavity having spaced opposed friction surfaces in the form of said first and second disc portions, d. a stator portion including an annular base member having e. means for mounting f. a first annular piston within said cavity, said mounting means for the piston including an annular flange on said annular base member upon which said piston is slidable, g. said first piston carrying an annular flange overlying said mounting means to form h. an annular cylinder within said annular cavity, i. a second annular piston mounted in said cylinder, j. means for normally urging said pistons together which includes an annular flange formed on the inner annular edge of said second piston, k. said flange of said second piston having a multiplicity of holes therethrough, l. said firSt piston includes an annular flange formed on the inner annular edge, m. said inner flange of said first piston having a multiplicity of holes, n. said annular flange of said annular base member having a multiplicity of holes, o. a pin mounted in the holes of said flanges of said pistons and the holes of said annular flange of said annular base member, p. shoulder means formed on the outer end of each of said pins, q. a coil spring mounted on each of said pins between said shoulder means and said flange of said second piston to normally thereby urge the pistons together, r. friction means carried by each of said pistons for engagement with the opposed friction surfaces of said U-shaped cavity, s. means rotatably mounting said rotor on said stator including a bearing mounted between said annular base member of said stator and said annular support of said rotor, t. means for maintaining said stator stationary, u. means for mounting said annular support of said rotor on a shaft to be braked, v. means carried by said annular housing for dissipating heat from the brake through the annular cavity and out said annular housing including a multiplicity of holes formed in said first disc portion of said annular housing, w. a multiplicity of holes formed in said second disc portion of said annular housing, x. a multiplicity of holes formed in said annular base wall of said annular housing, y. fins mounted on said first disc portion, said second disc portion and said annular base wall, z. said friction means of said pistons having grooves therein whereby upon a braking of the device air passes inwardly of said holes in said first and second disc portions, through said grooves of said friction means and out said holes of said annular base wall of said annular housing.
Claim 3
Dependent Claim
25 words
The device of claim 1 in which said annular support includes a a. bushing which carries a b. hub which mounts c. an annular flange.
Claim 4
Dependent Claim
91 words
The device of claim 1 in which said means mounting said first annular piston includes a. a first annular recess in which is positioned b. a first O-ring for sealing engagement with said first piston, and c. a second annular recess formed in said mounting means in which is positioned d. a second O-ring for sealing engagement with said second piston and e. a third annular recess formed in said second piston in which is positioned f. a third O-ring for sealing engagement with said annular flange of said first piston.
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) | 1978-06-16 | 1978-12-16 | 1979-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-16 | 1982-12-16 | 1983-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-16 | 1986-12-16 | 1987-06-17 | $7700.00 | Window Closed / Lapsed |