Patent ID: 6220399
Filing Date: 2001-04-24
Classification: B62L

Abstract:
A cable operated piston brake actuator comprising:a brake case with a bore for a piston, the case having outer, inner, upper, and lower ends;a piston slidably mounted in the brake case, the piston having outer and inner ends;an actuator cable having first and second ends;a first cable guide on the upper inner end of the brake case for redirecting the cable from a generally vertical orientation above the case to a span above and parallel to the piston;a second cable guide on the outer end of the piston for redirecting the cable approximately 180 degrees between upper and lower spans approximately parallel to the piston;a cable end holder on the lower inner end of the brake case for holding the first end of the actuator cable;a spring in the brake case urging the piston to retract into the case; andthe actuator cable is routed from above the brake case, around the first cable guide, thence around the second cable guide to the cable end holder;whereby a given tension force on the actuator cable above the case is transferred doubly to the piston, extending the piston from the inner end of the case.