Patent US3860992A successfully refreshed from Google Patents.
US3860992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wheel lock for transport cart
Assignee: Banner Metals Inc
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Filing: 1974-02-19
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Granted: 1975-01-21
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Expires: 1994-02-19
Abstract
Abstract A foot-operated swivel wheel lock assembly is provided for a swivel caster type of transport cart. The wheel lock assembly comprises a strip of material which is affixed to the base of one of the castors, and which extends downwardly from the base adjacent the rim of the caster wheel. A U-shaped cam is rotatably supported adjacent the strip on a pair of radial brackets, and a brake pedal is attached to the bight portion of the U-shaped cam. As the brake pedal is pushed downwardly, the cam is caused to turn to a horizontal position in the radial brackets and force the strip against the periphery of the caster wheel in a braking action. A foot-operated release rod is also provided which contacts a cam reversing rod to release the brake and return the cam to its original position.
Inventors
- 👤 James R Legg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:42
CPC Classifications
B; B60; B60B; B60B33/00; B60B33/02; B60B33/021
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
186 words
In a swivel caster assembly which includes a horizontal swivel plate mounted for rotation about a vertical axis, a pair of spaced-apart bracket arms mounted on the underside of the plate and extending down from the plane of the plate, and a wheel rotatably mounted between said spaced-apart bracket arms; a wheel lock assembly comprising: a pair of spaced-apart radial bracket arms affixed to said first-named bracket arms and extending generally radially with respect to the wheel; a braking strip mounted on said swivel plate and extending down between said radial bracket arms adjacent the peripheral rim of said wheel; a transverse reversing rod extending between said radial bracket arms adjacent to said braking strip; a cam member keyed to said reversing rod and rotatable thereby between a braking position in which it forces the braking strip against the peripheral rim of the wheel, and a release position in which it enables the braking strip to disengage from the peripheral rim of the wheel; and a foot operated brake pedal attached to said cam member and extending Outwardly beyond the ends of said radial bracket arms.
Claim 2
Dependent Claim
186 words
In a swivel caster assembly which includes a horizontal swivel plate mounted for rotation about a vertical axis, a pair of spaced-apart bracket arms mounted on the underside of the plate and extending down from the plane of the plate, and a wheel rotatably mounted between said spaced-apart bracket arms; a wheel lock assembly comprising: a pair of spaced-apart radial bracket arms affixed to said first-named bracket arms and extending generally radially with respect to the wheel; a braking strip mounted on said swivel plate and extending down between said radial bracket arms adjacent the peripheral rim of said wheel; a transverse reversing rod extending between said radial bracket arms adjacent to said braking strip; a cam member keyed to said reversing rod and rotatable thereby between a braking position in which it forces the braking strip against the peripheral rim of the wheel, and a release position in which it enables the braking strip to disengage from the peripheral rim of the wheel; and a foot operated brake pedal attached to said cam member and extending Outwardly beyond the ends of said radial bracket arms.
Claim 3
Dependent Claim
40 words
The assembly defined in claim 1, in which said reversing rod has a U-shaped end portion, and which includes a brake release rod rotatably mounted in said radial bracket arms and engaging said U-shaped end portion of said reversing rod.
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) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |