Patents by Inventor Richard L. Davidson

Richard L. Davidson 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: 4730417
    Abstract: A finishing method and apparatus wherein a tub containing loose abrasive material is rotated at high speeds about a vertical axis to cause finishing media to form a layer of media along the side wall of the tube. One or more workpieces to be finished are supported in the media and are rotated about a vertical axis coincident or parallel to the axis of the tub such that a rapid cutting and finishing action is provided by the relative movement of the tub and the workpieces. The method and apparatus further comprises removing compound continuously from the lower part of the tub and cooling the material and returning it to the tub.
    Type: Grant
    Filed: August 29, 1986
    Date of Patent: March 15, 1988
    Assignee: The Grav-i-Flo Corporation
    Inventors: Richard L. Davidson, Richard S. Davidson
  • Patent number: 4540107
    Abstract: A firewood log storing and dispensing apparatus including a furniture-type cabinet housing having an upright log storage compartment in which logs are vertically stacked, a log delivery opening at the lower end of the compartment of a predetermined size adapted for passage therethrough of one log, and a closure mechanism mounted in the housing to extend across the delivery opening for selectively obstructing and opening the delivery opening to permit gravitational dispensing of logs from the compartment. A log cradle is movably arranged below the delivery opening to be vertically moved between a raised log receiving position at the delivery opening and a lowered log dispensing position spaced therebelow. An opening is provided in the cabinet for access to the cradle at its dispensing position for log removal therefrom.
    Type: Grant
    Filed: July 14, 1983
    Date of Patent: September 10, 1985
    Inventor: Richard L. Davidson