Patents by Inventor Richard J. Chalmers

Richard J. Chalmers 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: 4182201
    Abstract: A differential including a driven carrier which rotatably receives a pair of spaced bevel gears secured to axially aligned shafts concentric with the axis of rotation of the carrier. A pair of diametrically opposed slots are formed in the inner surface of the carrier and extend parallel to the carrier axis. A two-piece floating pinion pin having pinions journaled thereon includes generally rectangular feet on opposite ends thereof slidably received in the slots and defining flats that are longer than the pin diameter and which slidably engage the sides of the slots thereby preventing rotation of the pin relative to the carrier while allowing the axis of each pinion to shift longitudinally of the slot to maintain the axis of each pinion centered between the engaged portions of the bevel gears.
    Type: Grant
    Filed: August 1, 1977
    Date of Patent: January 8, 1980
    Assignee: FMC Corporation
    Inventors: Roger D. Mayhew, Richard J. Chalmers