Patents by Inventor Alan Gregory Fern

Alan Gregory Fern 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).

  • Seals for use between two relatively-rotating surfaces
    Patent number: 3930655
    Abstract: A lip seal for use between two relatively-rotating surfaces, and in which the contact pressure increases with distance from the sealing lip for preventing the leakage of fluid therebetween irrespective of the direction of relative rotation. The seal has projections on the "air" side of the sealing lip (that is to say, the side remote from the fluid to be sealed) which so engage one of the relatively-rotating surfaces as to have a contact area of which two opposite sides extend away from the sealing lip portion and diverge away from each other.
    Type: Grant
    Filed: April 29, 1974
    Date of Patent: January 6, 1976
    Assignee: Dowty Seals Limited
    Inventor: Alan Gregory Fern