Patents Examined by Jill H. Heitbrink
  • Valve pin locking mechanism
    Patent number: 7022278
    Abstract: A locking mechanism for locking a valve pin of a nozzle of an injection molding apparatus in an extended position includes a generally oblong detent coupled to a pin. The pin extends through an aperture located at a first end of the detent to secure the detent to an inner wall of a recess, which is located adjacent the piston-receiving cavity of the valve pin. The detent is pivotable about the pin to rotate a second end of the detent into abutment with a return surface of the piston to restrict movement of the valve pin.
    Type: Grant
    Filed: February 11, 2003
    Date of Patent: April 4, 2006
    Assignee: Mold-Masters Limited
    Inventor: Gino Colonico