Title: Fluid pressure braking system with limiting valve for anti-compounding and fail-safe standby valve

Abstract: A fluid pressure braking system for a vehicle having brake actuators which may be mechanically held in the brake-applied position when the vehicle is parked and which may be actuated from either service or emergency actuating systems, is provided with a fluid communication limiting valve which limits fluid communication through the service actuating system to the brake actuators when the actuators have been actuated by the emergency system, thereby providing an "anti-compounding" capability so that the brake actuators cannot be actuated by the combined full capacities of both actuating systems. The system further includes a standby valve which is responsive to a normal brake application to communicate fluid pressure to the actuators through the emergency system when the failure of the primary fluid pressure system prevents communication to the actuators through the service system.

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Inventors: Fannin, Richard C. (Elyria, OH, US)

Application Number: 636384
Filing Date: 1975-11-28
Publication_date: 1977-01-18
Assignee: The Bendix Corporation (South Bend, IN)
Primary Class(es): 303/9.76 303/9, 303/13, 303/71
Other Classes:
US Patent Ref:

2406284	Aug, 1946	Fitch	137/102.
3294455	Dec, 1966	Valentine	303/13.
3443839	May, 1969	Hinrichs et al.	303/13.
3456988	Jul, 1969	Gibbons et al.	303/13.

Other Refs:
Primary Examiner: Blix, Trygve M.
Assistant Examiner: Butler, Douglas C.
Attorney: Decker; Ken C., Antonis; William N.