US3580369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid-cooled disc brake assembly
Assignee: Motors Liquidation Co
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Filing: 1969-06-27
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Granted: 1971-05-25
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Expires: 1989-06-27
Abstract
Abstract A brake having a sealed housing containing a disc pack for braking the wheel with which the brake assembly is associated. The brake has a wheel hub-driven pump which pumps cooling liquid radially inwardly through the disc pack and then to a heat exchanger arrangement including ballast tanks. The sealed assembly is fastened together with shear head bolts having a conical sealing head construction. The brake assembly is readily mountable on standard production wheel spindles by use of an adapter plate mounting bracket.
Inventors
- 👤 Burnette Heck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:21
CPC Classifications
B; B60; B60T; B60T1/00; B60T1/02; B60T1/06; B60T1/065; F; F16; F16D; F16D55/00; F16D55/24; F16D55/26; F16D55/36; F16D55/40; F16D65/00; F16D65/38; F16D65/40; F16D65/52; F16D65/54; F16D65/78; F16D65/84; F16D65/853; F16D2055/0004; F16D2055/0058
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
247 words
A liquid-cooled disc brake comprising: a wheel hub rotatably mountable on a support member, a brake housing mountable on said support member and receiving said hub in liquid sealing relation, a disc brake pack with interleaved rotating discs rotatably driven by said hub and stationary discs mounted in said housing, means for selectively engaging said discs in friction braking relation, a cooling liquid radial impeller pump driven by said hub and mounted in said housing and having an inlet line for receiving cooling liquid from and an outlet line for delivering cooling liquid to suitable heat exchanger means, pump outlet pressure passage means formed in said housing and delivering cooling liquid from said pump to a brake inlet chamber located in said housing radially outward of said disc pack, a brake outlet chamber radially inward of the friction braking surfaces of said disc pack receiving cooling liquid from said brake inlet chamber by radially inward flow of brake cooling liquid through said disc pack, passage means formed at least in part through said pump radially inwardly of the pump impeller and connecting said brake outlet chamber and said pump outlet line, and an annular stationary disc forming a part of said disc pack and extending radially adjacent said pump separating the pump outlet pressure area and the pump inlet pressure area from said brake outlet chamber, said pump and said inlet line and said outlet line all being positioned on one side of said disc brake pack.
Claim 2
Dependent Claim
247 words
A liquid-cooled disc brake comprising: a wheel hub rotatably mountable on a support member, a brake housing mountable on said support member and receiving said hub in liquid sealing relation, a disc brake pack with interleaved rotating discs rotatably driven by said hub and stationary discs mounted in said housing, means for selectively engaging said discs in friction braking relation, a cooling liquid radial impeller pump driven by said hub and mounted in said housing and having an inlet line for receiving cooling liquid from and an outlet line for delivering cooling liquid to suitable heat exchanger means, pump outlet pressure passage means formed in said housing and delivering cooling liquid from said pump to a brake inlet chamber located in said housing radially outward of said disc pack, a brake outlet chamber radially inward of the friction braking surfaces of said disc pack receiving cooling liquid from said brake inlet chamber by radially inward flow of brake cooling liquid through said disc pack, passage means formed at least in part through said pump radially inwardly of the pump impeller and connecting said brake outlet chamber and said pump outlet line, and an annular stationary disc forming a part of said disc pack and extending radially adjacent said pump separating the pump outlet pressure area and the pump inlet pressure area from said brake outlet chamber, said pump and said inlet line and said outlet line all being positioned on one side of said disc brake pack.
Claim 3
Dependent Claim
40 words
The liquid-cooled disc brake of claim 1, said pump being a sIngle cusp impeller rotating in a toroidal pump chamber formed in said housing with said annular stationary disc extending radially to cover one side of said toroidal pump chamber.
Claim 4
Dependent Claim
47 words
The liquid-cooled disc brake of claim 1, said pump having spaced splined areas on the inner periphery thereof mating with splines on said hub, the spaces between said splined areas providing a part of said passage means connecting said brake outlet chamber and said pump outlet line.
Claim 5
Dependent Claim
177 words
The liquid-cooled disc brake of claim 1, further comprising an annular piston movable by pressure in a chamber formed in said housing to actuate said brake, piston-retracting and -adjusting means including a split pin extending through a hole formed in a part of said piston extending radially outward beyond the braking surfaces of said disc pack, said pin extending over the periphery of the braking surfaces of said disc pack and engageable with a radially extended part of said annular stationary disc with one pin end, a compression spring receiving said pin therethrough and acting on said piston and said stationary disc to urge them apart, the pin being frictionally fitted but movable in said hole relative to said piston by movement of said piston in a brake applying direction beyond the movement required to engage the one end of said pin with said annular stationary disc, the other end of said pin abutting a surface of said housing upon retracting movement of said spring to establish a new adjusted piston retracted position as brake wear occurs.
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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |