Patents by Inventor John W. Tavener

John W. Tavener 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).

  • Ratchet mechanism
    Patent number: 4633733
    Abstract: A ratchet mechanism comprising a disc rotatable on a pivot pin, said disc being provided with radially disposed ratchet teeth on a face of the disc, an engagement plate provided with channels corresponding to and engageable with the teeth of the disc, the ratchet face of the rotatable disc being biassed into engagement with the ratchet face of the plate, and means for disengaging the ratchet disc from the plate. The mechanism is particularly suitable for the construction of a hand brake for an automotive vehicle using thermoplastics as the material of construction.
    Type: Grant
    Filed: September 23, 1985
    Date of Patent: January 6, 1987
    Assignee: Imperial Chemical Industries PLC
    Inventor: John W. Tavener