Patents by Inventor Geoffrey R. Evans

Geoffrey R. Evans 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).

  • Gasketing for heat exchanger plates
    Patent number: 4556106
    Abstract: A gasket retention for heat exchanger plates includes a projection on the gasket which passes through an aperture in the plate with an interference fit. According to the present invention the apertures (2) are made so as to provide two alternative positions for the gasket projections (3), namely a tight position as illustrated in FIG. 1c and a freely movable position. The movement between positions may be by twisting as in FIG. 1c, or by a longtitudinal movement, e.g. in a key-hole slot aperture. The aperture may be tapered through the plates.
    Type: Grant
    Filed: April 4, 1984
    Date of Patent: December 3, 1985
    Assignee: APV International Limited
    Inventor: Geoffrey R. Evans