US3659681A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lever actuated disk brake
Assignee: AC MATERIAL HANDLING Corp 777 MANOR PARK DRIVE COLUMBUS OHIO 43228 A CORP OHIO
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Filing: 1970-04-16
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Granted: 1972-05-02
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Expires: 1990-04-16
Abstract
Abstract A compact disk brake having a pair of brake shoes floatingly mounted on a pair of pins and a brake operating lever which is operative to move the shoes into engagement with opposite sides of a brake disk. One of the shoes is U-shaped and presents two pairs of openings through which the pins extend.
Inventors
- 👤 Dennis G Harvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:55
CPC Classifications
B; B60; B60T; B60T1/00; B60T1/02; B60T1/06; B60T1/062; F; F16; F16D; F16D55/00; F16D55/02; F16D55/22; F16D55/224; H; H02; H02K; H02K7/00; H02K7/10; H02K7/102; F16D2125/00; F16D2125/18; F16D2125/20; F16D2125/22; F16D2125/28; F16D2125/32
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
245 words
In a vehicle having a wheel rotatably mounted on a support and including a rotatable part which rotates whenever the wheel rotates, a braking mechanism comprising: a disk secured to said rotatable part for rotation therewith, a pair of spaced elongated elements rigidly secured at their corresponding ends to said support and having free ends extending axially from said support in parallel relation to one another, a first brake shoe having a first leg on one axial side Of said disk, a second leg on the opposite axial side of said disk, a bridging portion spaced radially of said disk, rigidly interconnecting said legs and presenting an opening for receiving an operating lever, and first and second pairs of aligned openings in said legs through which said free ends of said elements extend, a second brake shoe disposed on the opposite side of said disk intermediate the latter and said second leg of said first brake shoe including a pair of openings through which said free ends of said elements extend, said shoes being mounted in axially shiftable relation on said elements, an abutment surface in said opening of said bridging portion, and an operating lever extending through said opening and having spaced portions in axially opposite thrust transmitting engagement with said abutment surface and said second brake shoe, respectively, said free ends of said elongated elements being smaller in cross section than said openings, respectively, whereby said shoes are readily removable from said elements.
Claim 2
Dependent Claim
245 words
In a vehicle having a wheel rotatably mounted on a support and including a rotatable part which rotates whenever the wheel rotates, a braking mechanism comprising: a disk secured to said rotatable part for rotation therewith, a pair of spaced elongated elements rigidly secured at their corresponding ends to said support and having free ends extending axially from said support in parallel relation to one another, a first brake shoe having a first leg on one axial side Of said disk, a second leg on the opposite axial side of said disk, a bridging portion spaced radially of said disk, rigidly interconnecting said legs and presenting an opening for receiving an operating lever, and first and second pairs of aligned openings in said legs through which said free ends of said elements extend, a second brake shoe disposed on the opposite side of said disk intermediate the latter and said second leg of said first brake shoe including a pair of openings through which said free ends of said elements extend, said shoes being mounted in axially shiftable relation on said elements, an abutment surface in said opening of said bridging portion, and an operating lever extending through said opening and having spaced portions in axially opposite thrust transmitting engagement with said abutment surface and said second brake shoe, respectively, said free ends of said elongated elements being smaller in cross section than said openings, respectively, whereby said shoes are readily removable from said elements.
Claim 3
Dependent Claim
22 words
The invention of claim 1 wherein said portions of said lever are spaced radially from one another as related to said disk.
Claim 4
Dependent Claim
17 words
The invention of claim 1 wherein said elements are disposed intermediate said bridging portion and said disk.
Claim 5
Dependent Claim
20 words
The invention of claim 1 wherein said lever extends between said elements and is supported on one of said shoes.
Claim 6
Dependent Claim
28 words
The invention of claim 1 and further comprising a pair of coil springs encompassing said elements, respectively, and disposed between and acting in opposite directions on said shoes.
Claim 7
Dependent Claim
24 words
The invention of claim 1 wherein said shoes are removable axially from said elements upon axial removal of said disk from said rotatable part.
Claim 8
Dependent Claim
15 words
The invention of claim 6 wherein said disk is releasably secured to said rotatable part.
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) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |