Patents by Inventor P. Keith Potts

P. Keith Potts 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).

  • Automatic sliding gate valve
    Patent number: 4415139
    Abstract: An automatic sliding gate valve for connection to the ingress or egress opening of a vibrating dryer or other structure operable under either vacuum or pressure, the gate valve having a flat slide plate slidably movable by fluid powered cylinders and dampened, held rigid in its guides and held against pressure or vacuum by pneumatic seal members.
    Type: Grant
    Filed: August 3, 1981
    Date of Patent: November 15, 1983
    Assignee: Eastman Kodak Company
    Inventor: P. Keith Potts
  • Safety floating step assembly for platform
    Patent number: 4249634
    Abstract: Safety floating step assembly for pivotal connection to platforms and the like, being self-leveling through a single pair of parallel four-bar linkages and adjustably movable to the same and different horizontal levels of position relative to the platform and to the top of different height vehicles that may be located alongside the platform and being provided with a locking mechanism for releasably locking the floating step assembly at any desired horizontal level.
    Type: Grant
    Filed: September 12, 1979
    Date of Patent: February 10, 1981
    Assignee: Eastman Kodak Company
    Inventor: P. Keith Potts