Full-function valve for heavy duty semi-trailer brake systems

Details Full-function valve for heavy duty semi-trailer brake systems Full-function valve for heavy duty semi-trailer brake systems

1992-09-02

1993-08-17

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Multiple fluid-receiving devices

Multiple motors

303 976, 303 9, 303 28, 303 71, B60T 1300

Patent

active

052362507

ABSTRACT:
Within a single envelope or housing, this full-function valve integrates all of the emergency and service requirements of a tandem axle air brake system for heavy duty truck semi-trailers, thereby decreasing complexity and cost and enhancing safety, reliability and operating capability while also satisfying applicable Federal Regulations. The housing encloses a spring brake valve module, a relay valve module and a biased one-way pressure protection valve, all interconnected to meet operating requirements, while preventing non-intentional spring brake engagement, foreclosing trailer movement without adequate service brake capability and optionally providing anti-compounding protection.

REFERENCES:
patent: 4080004 (1978-03-01), Ury
patent: 4915456 (1990-04-01), Gross et al.

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