Patents by Inventor Jack D. Raymer

Jack D. Raymer 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).

  • Four wave valve for reversible cycle refrigeration system
    Patent number: 4139355
    Abstract: A four way valve assembly for a reversible cycle refrigeration system in which a rotary valve accomplishes the switching between heating and cooling modes. The rotary valve is mounted in a cavity in a housing and is designed to be rotated by a unidirectional electric motor. The rotary valve comprises a plate having a pair of recesses in it, which each acts to connect a pair of ports in a base plate together. A high pressure bypass port maintains the pressure in the cavity at a relatively high level such that the high pressure tends to increase the abutting contact between the valve plate and the base plate. A cam and switch arrangement provides the necessary control to stop and start the electric motor.
    Type: Grant
    Filed: April 28, 1977
    Date of Patent: February 13, 1979
    Assignee: Essex Group, Inc.
    Inventors: Jesse H. Turner, Jack D. Raymer