Spring-actuated air-brake cylinder for vehicle brake systems
AssigneeWABCO GmbH
InventorsFrank Schrader, Oliver Brandt, Jürgen Ewald, Wilfried Matthias, Andreas Richter
Life of this patent
Estimating the term…
Abstract
A spring-actuated air-brake cylinder as the diaphragm cylinder for vehicle brake systems includes a diaphragm, an actuator-spring chamber in which there is received a spring-actuated piston, which is acted on by a compression spring as the actuator spring and is actively connected to the diaphragm, which is disposed between the actuator-spring chamber and a pressure chamber, in which there is guided moveably a sealed push rod, which can include a pressure member on its diaphragm side. The spring-actuated diaphragm is connected to the push rod or to the pressure member or to the spring-actuated piston by means of vulcanization.
Claims14
A spring-actuated air-brake cylinder for a vehicle brake system, comprising an actuator-spring chamber, a spring-actuated piston received in said actuator-spring chamber, a compression spring acting on said spring-actuated piston, a diaphragm disposed between said actuator-spring chamber and a pressure chamber, a sealed push rod positioned moveably in said pressure chamber, and a pressure member provided on said push rod, said diaphragm being connected to at least one of said push rod, said pressure member and said spring-actuated piston by means of vulcanization.
A spring-actuated air-brake cylinder for a vehicle brake system, comprising an actuator-spring chamber, a spring-actuated piston received in said actuator-spring chamber, a compression spring acting on said spring-actuated piston, an annular diaphragm disposed between said actuator-spring chamber and a pressure chamber, said diaphragm including a central aperture defined therein, a sealed piston tube positioned moveably in said pressure chamber, said piston tube passing through said aperture and connected to said spring-actuated piston, said spring-actuated piston being connected directly to said diaphragm by means of vulcanization.
A spring-actuated air-brake cylinder for a vehicle brake system, comprising an actuator-spring chamber, a spring-actuated piston received in said actuator-spring chamber, a compression spring acting on said spring-actuated piston, a diaphragm disposed between said actuator-spring chamber and a pressure chamber, said diaphragm including an aperture defined therein, a sealed push rod positioned moveably in said pressure chamber, said push rod including a central through duct axially aligned with said aperture, said push rod further including a threaded portion extending through said aperture, and a mounting member disposed in said actuator-spring chamber and connected to said diaphragm by means of vulcanization, said mounting member constructed and arranged to receive said threaded portion of said push rod.
In a method for forming a spring-actuated air-brake cylinder for vehicle brake systems having a diaphragm in a spring chamber, the improvement comprising the vulcanization of said diaphragm to at least one of a push rod, a pressure member and a piston.
Dependencies are inferred from the claim text.