Patents by Inventor Walter H. Deitchman

Walter H. Deitchman 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).

  • Method and apparatus for brake application
    Patent number: 4838617
    Abstract: A valve is coupled with a brake line of a vehicle for causing or maintaining vehicle brake application. A switch coupled with a vehicle door regulates operation of the valve. When the vehicle door is open, the switch signals the valve to cause or maintain brake application. A timer coupled with the valve maintains the valve in an applied condition for a predetermined period of time after the door has been closed to allow disembarking passengers adequate time to move away from the vehicle. A sensor may be coupled with the vehicle for determining vehicle speed and preventing operation of the valve when the vehicle is traveling above a predetermined speed.
    Type: Grant
    Filed: February 22, 1988
    Date of Patent: June 13, 1989
    Assignee: Pearson and Deitchman Research and Dev. Co., Inc.
    Inventors: Walter H. Deitchman, Gaylord R. Pearson