Patents by Inventor John H. Royston

John H. Royston 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: 6163904
    Abstract: An articulated table for supporting a person is comprised of a frame with legs, an articulated tabletop supported by the frame, and a motorized actuator assembly under the tabletop. The tabletop includes a pivotable torso section hinged to a fixed seat section, which is hinged to a pivotable upper leg section, which is hinged to a pivotable lower leg section. The actuator assembly includes first and second pairs of actuating linkages for respectively moving the torso and upper leg sections. Each actuating linkage is comprised of a power axle spaced from a follower axle. A crank arm extends orthogonally from the power axle. A lifting arm extends orthogonally but unevenly in different directions from the follower axle. Rotation of the crank arm is transmitted to the lifting arm by a connecting arm pivotally connected between the crank arm and a shorter section of the lifting arm. A roller is attached to the end of the longer section of the lifting arm.
    Type: Grant
    Filed: December 8, 1998
    Date of Patent: December 26, 2000
    Assignee: Everett Associates, Inc.
    Inventor: John H. Royston
  • Patent number: 4176245
    Abstract: A wire splice insulator for underground wire splices and the like is provided in the form of a pair of substantially rigid flat base members in side by side relationship, a sheet of soft conformable self-sealing cohesive elastomer beneath and adhered to said base members, a dome extending outwardly from each said base member and elastomer sheet generally centrally of the base member and forming a cavity in the base member and elastomer sheet, a plurality of semi-tubular shields in each base member and elastomer sheet extending from the dome to adjacent the edge of the base members and forming semi-cylindrical cavities in said base members and sheets, said domes and tubular sheathes in the pair of base members being mirror images of each other, a soft non-hardening mastic adhesive insulating material filling the cavities in the elastomer and a parting sheet on the elastomer sheet and mastic opposite the base members.
    Type: Grant
    Filed: April 18, 1978
    Date of Patent: November 27, 1979
    Assignee: Royston Laboratories, Inc.
    Inventors: William A. Merlack, John H. Royston
  • Patent number: D418689
    Type: Grant
    Filed: December 3, 1998
    Date of Patent: January 11, 2000
    Assignee: Donald Payne
    Inventors: John H. Royston, Michael T. Salerno