Patents by Inventor Michael David Tober

Michael David Tober 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).

  • Solenoid valve seat and method of making same
    Patent number: 6240947
    Abstract: An improved, air tight valve seat for a pneumatic brake system is achieved by using a plastic valve seat that is coined by the valve member. The valve member is a harder material, for example metal, than the thermo-plastic valve seat. The valve member is brought to an elevated temperature less than the melting point of the valve seat. The valve member engages the valve seat, coining the desired surface of the valve seat to conform it to the valve member. The heated valve member then remains in the valve assembly after coining.
    Type: Grant
    Filed: August 24, 1999
    Date of Patent: June 5, 2001
    Assignee: AlliedSignal Truck Brake Systems Company
    Inventors: Thanh Ho, Robert J. Herbst, Michael David Tober