Patents by Inventor Geoffrey C. Lees

Geoffrey C. Lees 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).

  • Fluid seals
    Patent number: 4438935
    Abstract: A homogeneous self energizing seal comprising an annular member having side walls, a top and a bottom forming the trunk of the seal, the side walls are provided with chamfered upper portions the upper edges of which merges into flat portions on the top of the seal, the bottom edges of the chamfered portions forming the sealing lips of the seal. The flat portions on the top of the seal merge into annular slots or troughs in the top of the seal which has a raised center portion upstanding therefrom.
    Type: Grant
    Filed: July 20, 1982
    Date of Patent: March 27, 1984
    Assignee: J. C. Ludowici & Son Ltd.
    Inventor: Geoffrey C. Lees