Emergency brake release

Details Emergency brake release Emergency brake release

1994-12-28

1996-05-28

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Multiple fluid-receiving devices

Multiple motors

188170, 303 15, 303 71, 303DIG3, B60T 1322

Patent

active

055204465

ABSTRACT:
The instant invention is a positive shutoff valve for use on emergency vehicles so as to maintain air within a reservoir tank allowing immediate movement of an emergency vehicle upon start up. The shutoff valve is operated by a switch located in the operator's compartment of the emergency vehicle providing movement of a solenoid located in the shutoff valve which is biased in a normally closed position. A manual bypass lever is provided should the electric solenoid fail to operate correctly. The shutoff valve positively maintains air within the reservoir tank and is monitored by a low pressure switch and alarm sensor which will indicate low air pressure in the reservoir tank even when the vehicle is in an off position.

REFERENCES:
patent: 3272566 (1966-09-01), Clack
patent: 3456988 (1969-07-01), Gibbons et al.
patent: 4191428 (1978-07-01), Durling
patent: 4824178 (1989-04-01), Petersen
patent: 5118165 (1992-06-01), Latvala
patent: 5172958 (1992-12-01), Sell
patent: 5286095 (1994-02-01), Sell
patent: 5370449 (1994-12-01), Edelen et al.

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