Pump on demand

Details Pump on demand Pump on demand

1993-07-08

1995-02-14

Butler, Douglas C.

Fluid-pressure and analogous brake systems

With pump

3031161, 303DIG3, 303DIG4, 303 68, 3031151, 200 82D, B60T 832

Patent

active

053888944

ABSTRACT:
A brake fluid distribution control system for use in closed antilocking brake systems includes a switch in communication with low pressure accumulators for cyclically activating pumps that evacuate the low pressure accumulators of brake fluid under desired conditions. The method associated with this invention can be implemented by providing an indicator for indicating the amount of fluid within the accumulator and a switch for cyclically activating the pump when the fluid within the accumulator reaches a preselected capacity level. Alternatively, the antilocking brake system electronic controller is provided with appropriate software for cyclically activating the pump that evacuates the accumulators under preselected conditions.

REFERENCES:
patent: 3521934 (1970-07-01), Leiber
patent: 3645584 (1972-02-01), Leiber et al.
patent: 3659904 (1972-05-01), Stevens
patent: 4569560 (1986-02-01), Kubo
patent: 4724289 (1988-02-01), Heissler
patent: 4751400 (1988-06-01), Gath et al.
patent: 4799048 (1989-01-01), Goshima et al.
patent: 4880282 (1989-11-01), Makino et al.
patent: 4892364 (1990-01-01), Burgdorf
patent: 5089675 (1992-02-01), Betterton et al.
patent: 5197787 (1993-03-01), Matsuda et al.
patent: 5281014 (1994-01-01), Volz

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