Patent US3010834A successfully refreshed from Google Patents.
Patent US3586134A successfully refreshed from Google Patents.
US3586134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling liquid circulating system for disc brake
Assignee: Individual
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Filing: 1969-07-16
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Granted: 1971-06-22
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Expires: 1989-07-16
Abstract
Abstract The rotation of the wheel assembly to which the disc brake is applied causes spring-controlled plungers in a plurality of force pumps to be operated through engagement with cam means, the rotation of the wheel providing relative rotational movement of the plungers with respect to the cam means; the operation of the plungers in the pumps causing cooling liquid to be drawn from a reservoir and delivered to the friction discs, then after passing substantially radially outwardly over the discs, to be delivered back to the reservoir for continued recirculation; the liquid preferably being caused to pass through cooling and straining means in the course of its recirculation.
Inventors
- 👤 Paul J Westfall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:41
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/78; F16D65/84; F16D65/853; F16D55/00; F16D55/24; F16D55/26; F16D55/36; F16D55/40; F16D2055/0004; F16D2055/0058; F16D69/00; F16D2069/004; F16D65/02; F16D65/12; F16D65/127
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
328 words
In a disc brake assembly including a stationary housing enclosing a portion of a rotating shaft with a hub and including nonrotating friction discs supported at their outer peripheries in the stationary housing and rotating friction discs supported at their inner peripheries on the hub, a plurality of identical pump assemblies located in the hub, the housings for said pump assemblies comprising cylindrical channels having their axes parallel to the hub axis and located equidistant therefrom, a plunger in each pump assembly, a spring engaging each plunger, a cam element mounted in the stationary housing for operating said pump assemblies, said cam element including a cylindrical wall concentric with said axis of rotation, the adjacent sidewall of said hub having a circular slot to accommodate said cylindrical wall of said cam element, said slot in said hub extending through the ends of said channels in said hub constituting the housings for said pump assemblies, the rim of said cylindrical wall of said cam element having a cam lobe, said cam element operating to thrust said plungers in succession inwardly against the force of their springs and thereby operate said pump assemblies, an inlet port and outlet port in each pump assembly, means for delivering cooling liquid from a common source to each of said inlet ports, a channel leading from each of said outlet ports to the nearest portion of the periphery of said hub, whereby the rotation of said hub in said housing will cause said pump assemblies to be operated by said cam element and cooling liquid to be delivered to the inner peripheries of said discs, and means for returning the cooling liquid collected at the outer periphery of said discs in said housing to the common source of the cooling liquid for recirculation, and whereby the amount of cooling liquid circulated will be governed by the rate at which said pump assembly is operated and thus by the speed of rotation of said hub.
Claim 2
Dependent Claim
328 words
In a disc brake assembly including a stationary housing enclosing a portion of a rotating shaft with a hub and including nonrotating friction discs supported at their outer peripheries in the stationary housing and rotating friction discs supported at their inner peripheries on the hub, a plurality of identical pump assemblies located in the hub, the housings for said pump assemblies comprising cylindrical channels having their axes parallel to the hub axis and located equidistant therefrom, a plunger in each pump assembly, a spring engaging each plunger, a cam element mounted in the stationary housing for operating said pump assemblies, said cam element including a cylindrical wall concentric with said axis of rotation, the adjacent sidewall of said hub having a circular slot to accommodate said cylindrical wall of said cam element, said slot in said hub extending through the ends of said channels in said hub constituting the housings for said pump assemblies, the rim of said cylindrical wall of said cam element having a cam lobe, said cam element operating to thrust said plungers in succession inwardly against the force of their springs and thereby operate said pump assemblies, an inlet port and outlet port in each pump assembly, means for delivering cooling liquid from a common source to each of said inlet ports, a channel leading from each of said outlet ports to the nearest portion of the periphery of said hub, whereby the rotation of said hub in said housing will cause said pump assemblies to be operated by said cam element and cooling liquid to be delivered to the inner peripheries of said discs, and means for returning the cooling liquid collected at the outer periphery of said discs in said housing to the common source of the cooling liquid for recirculation, and whereby the amount of cooling liquid circulated will be governed by the rate at which said pump assembly is operated and thus by the speed of rotation of said hub.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |