Patents Assigned to S. W. Services
  • Debris cap
    Patent number: 5778934
    Abstract: The debris cap includes a handle activated retainer mechanism for retaining the cap in a pipe in which it is installed. The retainer mechanism includes an over-center connecting rod system for keeping the retaining mechanism in its retaining position. A barrel lock is employed to prevent unauthorized removal of the cap. A resilient flange on the body of the cap frictionally engages the wall of the pipe to support the cap as the retainer mechanism is manipulated.
    Type: Grant
    Filed: October 29, 1996
    Date of Patent: July 14, 1998
    Assignee: S.W. Services
    Inventor: Lucky Campbell
  • Debris cap with locking system
    Patent number: 5439130
    Abstract: A debris cap is provided with a locking post that is insertable into an opening in the closure of the cap so that a lock engaging the manipulating handle of the cap and the locking post prevents unauthorized removal of the cap.
    Type: Grant
    Filed: March 21, 1994
    Date of Patent: August 8, 1995
    Assignee: S. W. Services
    Inventor: Gary C. Waugh