Patents by Inventor Cliff R. R. Aitken

Cliff R. R. Aitken 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).

  • Patent number: 4858274
    Abstract: A lift-off hinge assembly including a first hinge leaf hingedly connected to a second hinge leaf, the hinge connection between the hinge leaves being defined by at least two hinge formations spaced apart along the pivot axis of the hinge assembly, each hinge formation including a hinge pin positioned on one hinge leaf and which is journalled in the other hinge leaf, the hinge pins of all the hinge formations being arranged to cooperate with their respective journal to enable the hinge pins to be simultaneously withdrawn from their respective journals by moving the hinge leaves apart along the pivot axis, the journal for each pin being defined by a continuously walled aperture in an arm formed on the hinge leaf.
    Type: Grant
    Filed: October 21, 1987
    Date of Patent: August 22, 1989
    Assignee: I. H. W. Engineering Ltd.
    Inventors: Neil Harrison, Cliff R. R. Aitken, Ian Holloway