Patents by Inventor Christopher A. Zajac

Christopher A. Zajac 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).

  • Patent number: 6315267
    Abstract: An engine coolant valve has a valve body with rotatable valve member thereon with a cylindrical configuration cross ported for rotary sealing against an arcuately shaped elastomeric face seal. A torque motor is attached to the valve body and has the motor rotor drivingly engaging a hub on the valve member.
    Type: Grant
    Filed: September 16, 1999
    Date of Patent: November 13, 2001
    Assignee: Eaton Corporation
    Inventors: Christopher A. Zajac, Christopher J. Babin
  • Patent number: 6185959
    Abstract: A filter/drier has, in one embodiment, an expansion valve block formed integrally with a header welded to a desiccant-containing canister. The block has a bore into which is received a precalibrated thermally responsive cartridge valve after the welding operations to prevent exposure of the cartridge valve to the elevated temperatures experienced during welding. In another embodiment, a valve block has one end of a first conduit welded to the high pressure inlet port and one end of a second conduit welded to the low pressure discharge port. A cartridge type thermally responsive precalibrated expansion valve is assembled in a block bore after welding is completed to prevent the expansion valve from being exposed to elevate temperatures experienced during welding.
    Type: Grant
    Filed: April 9, 1999
    Date of Patent: February 13, 2001
    Assignee: Eaton Corporation
    Inventor: Christopher A. Zajac
  • Patent number: 5934642
    Abstract: A butterfly water valve for a heater core has a vacuum motor attached to the water valve body with the vacuum motor connected to the butterfly valve crank. The vacuum motor housing has a well formed therein and a solenoid operated valve is quick connected in the well and is ported directly to the vacuum motor pressure chamber. The solenoid valve well communicates with a vacuum connector formed integrally with the vacuum motor housing. The vacuum motor housing is preferably formed of two shells welded together and sealing about the rim of a pressure responsive diaphragm.
    Type: Grant
    Filed: August 7, 1997
    Date of Patent: August 10, 1999
    Assignee: Eaton Corporation
    Inventors: James E. Pearson, Dennis DeVera, Christopher A. Zajac