Brake pressure control device

Details Brake pressure control device Brake pressure control device

1997-01-08

1999-01-19

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

3031192, 303900, 3031161, B60T 850, B60T 836

Patent

active

058607099

ABSTRACT:
A brake pressure control device that prevents the accumulation of contaminants, thereby ensuring that the pressure can rise again during an antilock control operation or provide sufficient pressure during sudden braking, thereby ensuring a high degree of safety. A piston (16), housing a valve plug (24), is mounted inside a cavity (12), wherein a primary variable restrictor (32), formed between the cavity and the piston, and a secondary variable restrictor (33) and a third variable restrictor (34), both formed between the piston and the valve plug, are arranged sequentially. A fluid path with passage to the main brake line on the wheel cylinder side is connected between the secondary variable restrictor and third variable restrictor.

REFERENCES:
patent: 5094512 (1992-03-01), Kohno et al.
patent: 5221129 (1993-06-01), Takasaki
patent: 5713641 (1998-02-01), Hosoya

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