Patents by Inventor Steven Stojic

Steven Stojic has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Fluid-operated brake actuator with internal check valve
    Patent number: 5460076
    Abstract: A fluid-operated brake actuator having a check valve in the spring chamber to equalize the pressure on opposite sides of an operating movable diaphragm. The brake actuator comprises a service brake housing divided into first and second service chambers by a diaphragm or piston, and a spring brake housing arranged in tandem with and attached to the service brake housing, also divided into a first and second spring chambers by a diaphragm or piston. The check valve connecting the first and second spring chambers blocks flow between the first and second chambers when the second spring brake chamber is pressurized and opens up flow between the two chambers when the second spring chamber is depressurized.
    Type: Grant
    Filed: March 15, 1994
    Date of Patent: October 24, 1995
    Assignee: NAI Anchorlok, Inc.
    Inventors: Wiliam C. Pierce, John P. Smith, Steven Stojic