Class 417/451 - Valve element mounted in fixed chamber wall removable with pumping member

Subclass of Class 417 - Pumps
Definition: Apparatus in which there is a valve structure located in
No. of patents: 4
Last issue date: 12/06/2005

Number	Title	Issue Date
6971168	Compressor valve plate A method of manufacturing a compressor valve plate (36) comprises at least the following steps in succession: blanking of a blank of the plate (36) from a steel sheet of suitable thickness, punching holes corresponding to the output and intake openings...	12/06/2005
5048604	Sucker rod actuated intake valve assembly for insert subsurface reciprocating pumps The invention is drawn to an improved inlet valve assembly for use in subsurface sucker rod operated reciprocating piston pumps. The inlet valve or standing valve is locked in the closed position when the pump is unanchored from the production tubing to p...	09/17/1991
4985181	Centrifugal pump especially for aquariums A submersible centrifugal pump especially for aquariums includes a motor driven impeller for circulating water through the pump and a movable flow indicator visible from the exterior of the pump for visually indicating the water flow rate through the pump...	01/15/1991
4143998	Fluid pump A fluid pump having a chamber, a diaphragm cooperating with the chamber and actuated by a solenoid, and inlet and outlet check valves communicating with the chamber. Another valve communicating with the chamber and interposed in the flow path of fluid thr...	03/13/1979

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