Patents by Inventor Joseph E. Williams

Joseph E. Williams 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).

  • Barrier unlocking mechanism
    Patent number: 4525951
    Abstract: A locking and releasing mechanism for a turnstile has a locking member which abuts a stop roller mounted on the hub of the turnstile at a spacing from its axis, to prevent rotation. A sleeve portion of the locking member is axially slidable in a cylinder and a plurality of balls retained in circumferentially disposed holes in the sleeve wall latch the member in its locking position by engaging in angled recesses in the cylinder wall. A latch release piston axially movable within the sleeve by an air motor has a peripheral groove and the locking member is unlatched by aligning the groove with the sleeve holes so that the balls disengage from the recesses and engage in the groove. The balls are urged towards the groove by springs and where present by axial loading of the locking member resulting from attempted rotation of the turnstile.
    Type: Grant
    Filed: March 4, 1983
    Date of Patent: July 2, 1985
    Assignee: Coras Iompair Eireann
    Inventor: Joseph E. Williams
  • Bird feeder
    Patent number: D412225
    Type: Grant
    Filed: March 17, 1998
    Date of Patent: July 20, 1999
    Inventor: Joseph E. Williams
  • Wind chime
    Patent number: D419903
    Type: Grant
    Filed: April 8, 1999
    Date of Patent: February 1, 2000
    Inventor: Joseph E. Williams
  • Wind chime
    Patent number: D420613
    Type: Grant
    Filed: April 6, 1998
    Date of Patent: February 15, 2000
    Inventor: Joseph E. Williams