Patent ID: 7114597
Filing Date: 2006-10-03
Classification: B60T

Abstract:
1. A spring-loaded cylinder for generating braking forces for an emergency and parking brake effect, comprising: a cylinder housing; a piston arranged in the housing, which piston is movable for operating a brake lever and which is pretensioned via a spring toward the brake lever when installed; a release screw operable to move the piston from an extended position operating the brake lever in a braking position against a force of the spring into a withdrawn position releasing the braking position; a primary chamber arranged in the cylinder housing, which chamber is adapted to be acted upon by pressure and, when a response pressure of the piston is exceeded, moves the piston against the force of the spring into the withdrawn position; and at least one electrical contact switch provided between the release screw and the piston, which detects a position of the piston in the cylinder housing.