Patent US3902576A successfully refreshed from Google Patents.
US3902576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Add-on unidirectional brake
Assignee: WEBSTER TRUCK AND CASTER Co
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Filing: 1974-11-11
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Granted: 1975-09-02
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Expires: 1994-11-11
Abstract
Abstract A unidirectional brake is provided for addition to a caster of conventional construction having a wheel mounted to an axle for rotation, which axle is mounted in a yoke. The add-on unidirectional brake includes a pair of mounting brackets adapted to be mounted to opposite sides of the caster by means cooperating with the axle. The legs of a U-shaped bail member are mounted to the mounting brackets by hooks at the ends of the legs, which hooks extend inwardly through holes in the mounting brackets. When the brackets are in place and the caster is in an upright position, the legs extend rearwardly from the mounting brackets and the bight rests in contact with the periphery of the caster wheel and the hooks on the ends of the legs of the Ushaped bail member cooperate with the yoke to form stop means to limit movement of the brackets during rearward rotation of the wheel. The unidirectional brake of the present invention has particular application to the front casters of a tow line conveyor truck.
Inventors
- 👤 Roger W Pitan
- 👤 Richard M Biessener
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:41
CPC Classifications
B; B62; B62B; B62B5/00; B62B5/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
217 words
An add-on unidirectional brake for use with a caster of the type having a wheel mounted to an axle for rotation, which axle is mounted in a yoke, the unidirectional brake comprising: a pair of mounting brackets including means for cooperating with the axle to mount said mounting brackets to opposite sides of the caster; a U-shaped bail member having two legs, each of which legs is mounted at a mounting point to one of said mounting brackets, and a bight connecting said legs wherein, when said mounting brackets are mounted to the caster and the caster is in its upright position, said legs extend rearwardly from said mounting points to said bight, which bight rests in contact with the periphery of said wheel and rides freely thereon when the wheel is rotated in the forward direction relative to said mounting points; and stop means wherein, when said mounting brackets are mounted to the caster and the caster is in its upright position, said stop means cooperates with at least one of said mounting brackets and the yoke to limit movement of said mounting bracket relative to the yoke when the wheel is rotated in a rearward direction to thereby cause a binding action be said bight on the periphery of the wheel to resist rearward rotation.
Claim 2
Dependent Claim
217 words
An add-on unidirectional brake for use with a caster of the type having a wheel mounted to an axle for rotation, which axle is mounted in a yoke, the unidirectional brake comprising: a pair of mounting brackets including means for cooperating with the axle to mount said mounting brackets to opposite sides of the caster; a U-shaped bail member having two legs, each of which legs is mounted at a mounting point to one of said mounting brackets, and a bight connecting said legs wherein, when said mounting brackets are mounted to the caster and the caster is in its upright position, said legs extend rearwardly from said mounting points to said bight, which bight rests in contact with the periphery of said wheel and rides freely thereon when the wheel is rotated in the forward direction relative to said mounting points; and stop means wherein, when said mounting brackets are mounted to the caster and the caster is in its upright position, said stop means cooperates with at least one of said mounting brackets and the yoke to limit movement of said mounting bracket relative to the yoke when the wheel is rotated in a rearward direction to thereby cause a binding action be said bight on the periphery of the wheel to resist rearward rotation.
Claim 3
Dependent Claim
22 words
The add-on unidirectional brake recited in claim 1 wherein said stop means cooperates with both of said mounting brackets and said yoke.
Claim 4
Dependent Claim
72 words
The add-on unidirectional brake recited in claim 2 wherein: said mounting brackets each include a hole; said legs of said U-shaped bail member each terminate in an inwardly facing hook wherein each of said hooks is disposed in a corresponding one of said holes in said mounting brackets so that a portion of said hooks extend inwardly through said holes; and said stop means comprises said inwardly extending portions of said hooks.
Claim 5
Dependent Claim
134 words
The add-on unidirectional brake recited in claim 1 for use with a caster of the type in which the axle includes a bolt extending between the yoke arms, which bolt includes a bolt head at one end and a nut threaded onto the other end to urge the yoke arms together, wherein: said mounting brackets include an aperture for accepting said bolt therethrough, said means for cooperating with the axle to mount said mounting brackets comprises said aperture in said mounting brackets, wherein one of said mounting brackets is adapted to be mounted to the caster by interposing it between the bolt head and the corresponding yoke arm and the other of said mounting brackets is adapted to be mounted to the caster by interposing it between the nut and the corresponding yoke arm.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-01 | 1979-03-03 | 1979-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-01 | 1983-03-03 | 1983-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-01 | 1987-03-03 | 1987-09-02 | $7700.00 | Window Closed / Lapsed |