Pressure failure warning device

Details Pressure failure warning device Pressure failure warning device

1976-01-07

1977-04-12

Reger, Duane A.

Fluid-pressure and analogous brake systems

Multiple fluid-receiving devices

Multiple motors

200 82D, 340 52C, B60T 826

Patent

active

040171248

ABSTRACT:
The invention relates to a failure detector for a dual hydraulic circuit such as a dual brake circuit in a motor vehicle. The detector comprises a movable piston assembly so as to define in a bore on opposite sides thereof two pressure chambers. Switch means are provided to make electrical contact when the movable assembly moves in certain direction from a central idle position due to pressure imbalance between the chambers. The movable assembly comprises a sleeve acting with the switch means and two resilient discs. The sleeve is mounted in a core fixed to a plug mounted in the bore and having the same axial length as the sleeve. The two discs are sealingly slidable along the bore and mounted in a fluid-tight manner on two axial projections attached to the opposite sides of the core and being smaller in diameter than the core.

REFERENCES:
patent: 3672732 (1972-06-01), Green
patent: 3773363 (1973-11-01), Papin
patent: 3774974 (1973-11-01), Braun
patent: 3872885 (1975-03-01), Eloi et al.
patent: 3916129 (1975-10-01), Cadeddu
patent: 3947648 (1976-03-01), Muterel

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