Patents by Inventor Donald L. Hager

Donald L. Hager 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).

  • Portable fluid transfer pump
    Patent number: 4101950
    Abstract: A portable fluid transfer pump is disclosed herein. The pump comprises a small electromagnetically activated fluid pump embodying a highly reliable blocking oscillator cyclically activating a solenoid coil in the fluid pump, and an electrical power cord assembly including an electrical connector adapted to be received in a convenient source of electrical power. In the preferred embodiment, the electrical connector is a male connector adapted to be received in the cigarette lighter receptacle of a vehicle such as an automobile, recreational vehicle, truck, or boat.
    Type: Grant
    Filed: November 8, 1976
    Date of Patent: July 18, 1978
    Assignee: Facet Enterprises, Inc.
    Inventors: Donald L. Hager, Ralph V. Brown, James A. Thomas