Hydraulic actuator for a vehicle internal shoe-drum brake

Details Hydraulic actuator for a vehicle internal shoe-drum brake Hydraulic actuator for a vehicle internal shoe-drum brake

1981-08-20

1984-06-26

Reger, Duane A.

Brakes

Operators

Fluid pressure

303 6C, F16F 6524

Patent

active

044561040

ABSTRACT:
An hydraulic brake actuator comprises opposed pistons which work in bore portions in a housing and fluid pressure in a pressure chamber urges the pistons in opposite directions to separate adjacent ends of a pair of brake shoes. A pressure proportioning valve controls communication between pressure spaces constituted by the pressure chamber. The valve is normally open to equalize the pressure in the pressure spaces but closes at a predetermined pressure so that any further increase in pressure is operative in only one pressure space, the pressure in which space acting to keep the valve closed. In use in a brake of the one-leading one-trailing shoe-drum type the increased pressure acts on the piston which applies the trailing shoe to the drum, in order to equalize the torque.

REFERENCES:
patent: 4266640 (1981-05-01), Woo

Affiliated with

Also associated with

Rating

Hydraulic actuator for a vehicle internal shoe-drum brake does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydraulic actuator for a vehicle internal shoe-drum brake, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic actuator for a vehicle internal shoe-drum brake will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2228248