Fluid-pressure and analogous brake systems – Multiple fluid-receiving devices – Multiple motors
Patent
1985-06-26
1987-04-21
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Multiple fluid-receiving devices
Multiple motors
188349, 303 22R, 303 84R, B60T 826, B60T 1100, B60T 1718
Patent
active
046591516
ABSTRACT:
A braking pressure control unit comprises a valve assembly with a valve seat (25) formed fast with the housing and a closure member (26) which latter, with the brake circuits (I, II) intact, when performing its relative movement to the valve seat (25), is kept in abutment on an extension (II) of a stepped piston (6) by a closure spring (28) supported on a malfunction piston (7). The valve (25, 26) is prevented from closing by the extension (11) at the stepped piston (6) and by a stop (29) for the closure member (26) at the malfunction piston (7). Because of the closure member (26) being in constant abutment on the extension (11) of the stepped piston (6) during its relative movement, there results a smaller stroke of the malfunction piston (7) and thus less fluid input of the braking pressure control unit and less wear of the sealing elements (22, 23) at the malfunction piston (7).
REFERENCES:
patent: 3806207 (1974-04-01), Reinecke et al.
patent: 4119352 (1978-10-01), Masuda
patent: 4418965 (1983-12-01), Reinecke
Alfred Teves GmbH
Butler Douglas C.
Michals William J.
Raden James B.
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