US4333207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Twin wheel caster brake
Assignee: Shepherd Products US Inc
•
Filing: 1980-12-22
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Granted: 1982-06-08
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Expires: 2000-12-22
Abstract
Abstract A twin wheel caster brake device for casters of the type having two wheels mounted on a common axle, with each wheel having a series of inwardly directed circumferential teeth, or wedge-shaped ribs, disposed at the inner side of each wheel forming a series of slots between the adjacent ribs and each rib having a surface projection forming a constriction in each slot for retaining a braking, or locking pin, which is mounted, or formed on a brake pedal that acts as a lever to force the pin into a slot when it is desired to brake the caster.
Inventors
- 👤 John T. Atwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:22
CPC Classifications
B; B60; B60B; B60B33/00; B60B33/0078; B60B33/0036; B60B33/0042; B60B33/02; B60B33/021; B62; B62B; B62B5/00; B62B5/04; B62B5/0457; B62B5/0461
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
92 words
A twin wheel caster brake arrangement including a caster having a pair of wheels mounted on a common axle at opposite sides of a central body, said body having a central hub and a wheel cover overlying said wheels, a brake lever between the wheels pivotally mounted under the wheel cover and an outer end of the lever extending through the wheel cover, and a brake pin at the inner end of the lever extending into locking engagement with the respective wheels when said outer end is fulcrumed about said pivotal mounting.
Claim 2
Dependent Claim
92 words
A twin wheel caster brake arrangement including a caster having a pair of wheels mounted on a common axle at opposite sides of a central body, said body having a central hub and a wheel cover overlying said wheels, a brake lever between the wheels pivotally mounted under the wheel cover and an outer end of the lever extending through the wheel cover, and a brake pin at the inner end of the lever extending into locking engagement with the respective wheels when said outer end is fulcrumed about said pivotal mounting.
Claim 3
Dependent Claim
74 words
A twin wheel caster brake as set forth in claim 1 wherein said wheels have peripheral rims creating hollow areas at the inner sides of the wheels and said brake pin extends into said hollow areas, a plurality of radially disposed ribs extending inwardly from said rims forming inwardly open slots therebetween, said brake pin being entered in aligned slots in the opposed wheels when the brake lever is fulcrumed about the pivotal mounting.
Claim 4
Dependent Claim
31 words
A twin wheel caster brake as set forth in claim 2 wherein said ribs have knife edge inner ends and are wedge shaped to guide said brake pins entering the slots.
Claim 5
Dependent Claim
55 words
A twin wheel caster brake as set forth in claim 3 wherein said slots each have a constriction formed by a rounded projection on one side of each wedge shaped rib, and a restricted retention area for the brake pin beyond said constriction when the brake pin is moved past the constriction by said lever.
Claim 6
Dependent Claim
46 words
A twin wheel caster brake as set forth in claim 4 wherein said central hub is provided with a rest stop for the inner end of the brake lever when the brake pins are disengaged from said slots by the pivoting action of the brake lever.
Claim 7
Dependent Claim
35 words
A twin wheel caster brake as set forth in claim 5 wherein said wheel cover is slotted for the brake lever passing therethrough, and a brake pedal on the outer end of the brake lever.
References Cited (Backward Citations)
US3914821A
Cited
US4110866A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-06-07 | 1985-12-07 | 1986-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-07 | 1989-12-07 | 1990-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-07 | 1993-12-07 | 1994-06-08 | $7700.00 | Window Closed / Lapsed |