Patents Assigned to Total Retraction Inc.
  • Barrier
    Patent number: 6244324
    Abstract: A barrier extendable and retractable beneficially in response to a changing environment of use, is disclosed. In use, the barrier is attached at its ends to support surfaces. An extension and retraction mechanism for the barrier beneficially exerts substantially constant force regardless of the barrier extent. In a preferred embodiment, a ball screw, an axially movable ball screw nut, and gas springs are used.
    Type: Grant
    Filed: September 27, 1999
    Date of Patent: June 12, 2001
    Assignee: Total Retraction Inc.
    Inventors: Robert B. Quates, David P. Ketcham