Protection valve device for spring parking brake systems

Details Protection valve device for spring parking brake systems Protection valve device for spring parking brake systems

1986-11-28

1988-02-23

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Charging

Motor

303 66, 303 71, 303 86, B60T 712, B60T 1300

Patent

active

047266287

ABSTRACT:
A protection valve device for a spring parking brake control system has a pipe bracket for connection in a normally pressurized brake pipe, the pipe bracket having connected thereto a protection valve, a charging reset valve and a charging check valve. The protection valve has a chamber at one side of a piston normally pressurized by pressure at a spring parking brake cylinder port and monitors the spring parking brake cylinder pressure to vent fluid from the brake pipe to automatically cause an emergency brake application if such pressure indicates a spring parking brake is applied. The charging reset valve prevents the venting of brake pipe fluid during charging of the brake pipe and spring parking brake system.

REFERENCES:
patent: 1792895 (1931-02-01), Cowlishaw
patent: 2318798 (1943-05-01), Piron
patent: 4019525 (1977-04-01), Horowitz
patent: 4033029 (1977-07-01), Spalding
patent: 4127308 (1978-11-01), McEathron
patent: 4474412 (1984-10-01), Schmitt
patent: 4653812 (1987-03-01), Engle

Affiliated with

Also associated with

Rating

Protection valve device for spring parking brake systems does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Protection valve device for spring parking brake systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Protection valve device for spring parking brake systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-599713