Patents by Inventor Robert G. Luft

Robert G. Luft 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).

  • Transmission disconnect with parking brake application
    Patent number: 4227598
    Abstract: A transmission disconnect control capable of placing a transmission in a neutral condition in response to application either of a pressure-applied service brake system or of a spring-apply parking brake system including a pilot operated disconnect valve which receives a pilot signal from either a parking brake signal valve or from the service brake valve, with a shuttle valve movable to select a signal from either the service brake valve or the parking brake signal valve.
    Type: Grant
    Filed: August 11, 1978
    Date of Patent: October 14, 1980
    Assignee: International Harvester Company
    Inventor: Robert G. Luft