Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1990-06-08
1992-03-10
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
303115PP, 303116R, 303119R, B60T 842, B60T 850
Patent
active
050945122
ABSTRACT:
A flow control valve for an antilocking device in a vehicle brake system prevents a locking of the wheels during a brake application. The flow control valve includes a pressure reducing chamber (115) regularly connected with an outlet port (111) through a passage by way of a fixed orifice (125). An inlet port (110) is normally connected with the outlet port (111) through a small passage. Therefore, even if a spool (116) is fixed in a position closing a large passage, working fluid introduced into the inlet port (110) flows to the outlet port (111) through the small passage, whereby it is possible to apply pressure to a wheel brake without wheel locking.
REFERENCES:
patent: 3443594 (1969-05-01), Frayer
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patent: 4099792 (1978-07-01), Schmid et al.
patent: 4120540 (1978-10-01), Derlieg
patent: 4640558 (1987-02-01), Nomura et al.
patent: 4715666 (1987-12-01), Farr
patent: 4779934 (1988-10-01), Ando
patent: 4892362 (1990-01-01), Takata
patent: 4915459 (1990-04-01), Hashida et al.
Hashida Koichi
Kohno Teruhisa
Butler Douglas C.
Fasse W. G.
Kane, Jr. D. H.
Poon Peter M.
Sumitomo Electric Industries Ltd.
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