Brake assembly having a dump valve

Details Brake assembly having a dump valve Brake assembly having a dump valve

1995-04-28

1995-11-28

Oberleitner, Robert J.

Brakes

Elements

Cooling and lubricating

188264D, 188 716, 19211335, F16D 65813

Patent

active

054699436

ABSTRACT:
A brake assembly, having a plurality of co-operating rotating and non-rotating brake discs, includes a dump valve mechanism, including a spool valve. The spool valve is adapted to move between first and second positions to close and open fluid communications between a fluid supply passage and a fluid dump passage. Excess cooling fluid supplied to a brake assembly when the brakes are inactive causes "brake drag" which wastes power and decreases machine efficiency. By dumping the cooling fluid to a fluid dump passage when the brakes are inactive, the "brake drag" is reduced.

REFERENCES:
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patent: 3924712 (1975-12-01), Stirling et al.
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patent: 4324320 (1982-04-01), Spurlin et al.
patent: 4325471 (1982-04-01), Schuster
patent: 4442929 (1984-04-01), Uchida
patent: 4624353 (1986-11-01), Sailer et al.
patent: 4644968 (1987-02-01), Chatterjea

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