Patents by Inventor John H. Beltz

John H. Beltz 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).

  • High pressure compressor cut-off switch
    Patent number: 3933005
    Abstract: A combination high pressure relief valve and magnetic clutch disconnect switch for an air conditioning compressor which utilizes an automatically resetting valve member. The escape of pressurized refrigerant under control of the relief valve pressurizes the interior of a cap member on the end of the relief valve and thereby disconnects the ground circuit portion of the electromagnetic compressor clutch. This renders the system inoperative until the cap can be replaced and the original cause of the high pressure is determined and remedied.
    Type: Grant
    Filed: October 15, 1974
    Date of Patent: January 20, 1976
    Assignee: General Motors Corporation
    Inventor: John H. Beltz