ApplicationNo. 05/942768 filed on 09/15/1978
US Classes:137/315.29, Gate valve137/315.38, Gear type251/250, Rectilinear rack251/291, DETACHABLE ACTUATOR251/326, Gate251/89WITH MEANS FOR BLOCKING OR DISABLING ACTUATOR
ExaminersPrimary: Schwadron, Martin P.
Assistant: Walton, G. L.
Attorney, Agent or Firm
International ClassesF16K 31/54 (20060101)
F16K 31/44 (20060101)
AbstractA pedestal extends upwardly from the body of a gate valve housing in a straddling relationship to the gate. An operator, detachably attachable to the pedestal, includes a hand wheel operating through a pinion gear to impart translatory movement to a vertically oriented rack. A clevis is disposed at the lower extremity of the rack for attachment through a pin to the upper end of the gate. A removable pin is employed to secure the gate, in either a raised or a lowered position, to the pedestal and to maintain the gate in position after removal of the operator.
Field of SearchRack and pinion