Patents by Inventor Henry W. Cummings

Henry W. Cummings 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).

  • Variable displacement diesel engine
    Patent number: 5813383
    Abstract: A diesel engine operated with cylinder cut-out is disclosed. The number of operative cylinders is proportional to the load on the engine. A computer stops the flow of fuel to the deactivated cylinders. The computer energizes the glow plugs of the deactived cylinders if the deactivated cylinder temperatures are below a predetermined minimum temperature before reactivating the cylinder.
    Type: Grant
    Filed: September 4, 1996
    Date of Patent: September 29, 1998
    Inventor: Henry W. Cummings