Patents by Inventor Robert Henry Parker

Robert Henry Parker 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).

  • Centrifugal fluid expansible pulley with manifold vacuum control means
    Patent number: 4023425
    Abstract: A pulley in which one flange, slidably mounted on a driving shaft, is movable towards another flange, fixed to the shaft, in response to the centrifugal force created by rotation of the shaft, acting on a quantity of oil contained in an annular chamber which is defined by the movable flange and a back-plate fixed to the driving shaft and is permanently connected to either the ambient atmosphere or a source of oil through a breather passage.
    Type: Grant
    Filed: April 21, 1976
    Date of Patent: May 17, 1977
    Assignee: A. C. Cars Limited
    Inventor: Robert Henry Parker