Brake system

Fluid-pressure and analogous brake systems – With pump – Pressure control

Patent

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Details

3031154, 303 3, 303 15, B60T 1318

Patent

active

060271787

ABSTRACT:
In a brake system, when a braking force tends to be insufficient, a first switching valve is set at an interrupting position to render a control chamber in a sealed state, and a pump is actuated to render a supplemental pressure-regulating valve in operation. Thus, MCY pressure supplied to a port of the supplemental pressure-regulating valve is increased to move a supplemental pressure piston downwardly to close the supplemental pressure-regulating valve. The fluid pressure from the pump is supplied to a brake cylinder to increase the braking force. In this manner, a supplemental braking control is provided to ensure the braking even when the braking force tends to be insufficient. The system can be made simple.

REFERENCES:
patent: 4453782 (1984-06-01), Arikawa et al.
patent: 4703979 (1987-11-01), Nakanishi et al.
patent: 5213399 (1993-05-01), Burgdorf et al.
patent: 5290098 (1994-03-01), Burgdorf et al.
patent: 5741050 (1998-04-01), Ganzel et al.

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