Patents by Inventor Raymond E. Marriner

Raymond E. Marriner 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).

  • Air heat exchanger
    Patent number: 4872503
    Abstract: A tube-within-a-tube, counter flow, air-to-air heat exchanger utilizing a rigid outer tube and a continuous, flexible inner tube. The corrugated, flexible inner tube is spiralled longitudinally around a center core and creates turbulence in the air which permits a rapid exchange of heat between the exhaust and fresh air streams.
    Type: Grant
    Filed: March 13, 1986
    Date of Patent: October 10, 1989
    Inventor: Raymond E. Marriner