Patent US3750854A successfully refreshed from Google Patents.
US3750854A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake shoe cooling means
Assignee: Individual
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Filing: 1971-06-30
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Granted: 1973-08-07
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Expires: 1991-06-30
Abstract
Abstract A brake drum and cooling means combination is disclosed. The brake is made up of a shoe having spaced lining segments with the cooling members disposed between the lining segments. A slot extends in from each side of the shoe in the space between the lining segments and a cooling member is disposed in each slot. The cooling member has two fins on the side adjacent the lining members and two cooling fins on the side opposite the lining. The cooling fins are made of a high heat conductivity material such as aluminum.
Inventors
- 👤 R Gramley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:59
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/78; F16D65/82; F16D65/02; F16D65/04; F16D65/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
137 words
In combination, a brake shoe, brake lining and cooling member, said brake shoe having circumferentially spaced lining members on a first side, laterally spaced slots in said shoe in the spaces between said lining segments, heat transfer members disposed in said slots, said heat transfer members having a portion disposed in a said space between said lining members on the side adjacent a brake drum, and second fins on the side of said heat transfer member on the side of said shoe remote from said brake drum, said heat transfer members being made of a material having a high coefficient of thermal conductivity, said brake is an external brake, said brake drum is disposed around said shoe and said heat transfer members have at least two said fins on the side of said shoe adjacent said drum.
Claim 2
Dependent Claim
137 words
In combination, a brake shoe, brake lining and cooling member, said brake shoe having circumferentially spaced lining members on a first side, laterally spaced slots in said shoe in the spaces between said lining segments, heat transfer members disposed in said slots, said heat transfer members having a portion disposed in a said space between said lining members on the side adjacent a brake drum, and second fins on the side of said heat transfer member on the side of said shoe remote from said brake drum, said heat transfer members being made of a material having a high coefficient of thermal conductivity, said brake is an external brake, said brake drum is disposed around said shoe and said heat transfer members have at least two said fins on the side of said shoe adjacent said drum.
Claim 3
Dependent Claim
11 words
The combination recited in claim 1 wherein said material is aluminum.
Claim 4
Dependent Claim
24 words
The combination recited in claim 1 wherein said heat transfer members have at least two fins on the side thereof remote from said drum.
Claim 5
Dependent Claim
35 words
The combination recited in claim 1 wherein at least one slot is adjacent each edge of said shoe, said slots extending toward each other a distance of approximately one-fourth the width of the brake shoe.
Claim 6
Dependent Claim
37 words
The combination recited in claim 4 wherein said heat transfer members are made up of a web which is disposed in each said slot, said fins are connected to said web on each side of said shoe.
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) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |