Plastic spring-loaded piston with insert
AssigneeKNORR-BREMSE Systeme fuer Nutzfahzeuge GmbH
InventorDamien Gravier
Life of this patent
Estimating the term…
Abstract
A spring-loaded piston is produced from plastic, particularly by injection molding. The spring-loaded piston is developed in the area of a connection to a piston or piston rod such that tilting of the spring-loaded piston with respect to the piston rod is prevented and a sufficiently firm connection is ensured. In addition, the spring-loaded piston 1 may include a reinforcing insert by which clearly higher forces can be transmitted while maintaining smaller wall thicknesses than in conventional spring-loaded pistons. Also, the seat or contact surface in the spring-loaded piston is constructed for supporting the preloaded spring such that possibly occurring radial forces do not have any negative influence on the functionality of the spring-loaded piston.
Claims10
A spring-loaded piston for a spring-loaded brake cylinder of a commercial vehicle, comprising:
- a molded plastic piston wall;
- and
- an insert molded into the molded plastic piston wall when the molded plastic piston wall is molded.
A method of manufacturing a spring-loaded piston for a spring-loaded brake cylinder of a commercial vehicle, the method comprising the acts of:
- injection molding a plastic spring-loaded piston wall;
- and
- simultaneously molding an insert into the plastic spring-loaded piston wall.
Dependencies are inferred from the claim text.