Brake system for heavy duty semi-trailer brake systems

Details Brake system for heavy duty semi-trailer brake systems Brake system for heavy duty semi-trailer brake systems

1994-11-29

1996-04-30

Oberleitner, Robert J.

Fluid-pressure and analogous brake systems

Multiple fluid-receiving devices

Multiple motors

303 41, 303 86, B60T 1300

Patent

active

055118607

ABSTRACT:
A braking system is improved by addition of a spring brake pressure protection valve, to prohibit pressurization of the spring brakes prior to the build up of sufficient pressure to insure complete release of the spring brakes. This prevents the significant problems associated with known systems that permit operation of a tractor trailer with partially released spring brakes, which will cause unnecessary wear and reduced fuel economy. The spring brake pressure protection valve is located between the reservoir and the spring brakes, most preferably between the spring brake quick release valve and the spring brakes, or alternately, between the reservoir and the spring brake quick release valve.

REFERENCES:
patent: Re30205 (1980-02-01), Carton et al.
patent: 4181367 (1980-01-01), Herring et al.
patent: 4915456 (1990-04-01), Gross et al.
patent: 5046786 (1991-09-01), Johnston et al.
patent: 5061015 (1991-10-01), Cramer et al.
patent: 5236250 (1993-08-01), Moody et al.
patent: 5445440 (1995-08-01), Plantan

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