Pressure control device

Details Pressure control device Pressure control device

1993-08-17

1995-05-02

Look, Edward K.

Expansible chamber devices

Plural flexible wall working members

92 98R, 303 87, F01B 1900, B60T 1704

Patent

active

054109450

ABSTRACT:
A pressure control accumulator for hydraulic brake systems includes a housing having a brake fluid port and a cavity communicating with the port. A staged series of resilient membranes is disposed within the cavity for nullifying hydraulic brake fluid pulsations over a wide range of pressures. The staged series preferably includes a resilient diaphragm disposed adjacent the port for nullifying hydraulic brake fluid pulsations at low and normal pressures by itself and maintaining the brake fluid on one side of the diaphragm, and a resilient membrane disposed remote from the port and normally spaced from the diaphragm, the diaphragm and the remotely-disposed membrane cooperatively nullifying hydraulic brake fluid pulsations at high pressures by providing a plurality of resilient resistances in series. The remotely disposed membrane may be a second diaphragm.

REFERENCES:
patent: 1807319 (1931-05-01), McCune
patent: 2649169 (1953-08-01), Holman
patent: 2659381 (1953-11-01), Seljos
patent: 4210310 (1980-07-01), Kay
patent: 5070983 (1991-12-01), Mostevens et al.
patent: 5161864 (1992-11-01), Cardenas et al.
patent: 5209553 (1993-05-01), Burgdorf et al.

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