Patents by Inventor George W. Feild

George W. Feild 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).

  • Patent number: 4969628
    Abstract: A valve construction and method of making the same are provided, the valve construction comprising a housing having an inlet and an outlet and a valve seat adapted to be interconnected to the inlet and the outlet, a movable valve member carried by the housing and being operatively associated with the valve seat to control fluid flow therethrough from the inlet to the outlet, and a stepper motor carried by the housing and being operatively interconnected to the movable valve member to move the movable valve member relative to the valve seat to control the fluid flow through the valve seat, the movable valve member comprising a flexible part for sealing closed the valve seat when the stepper motor moves the flexible part against the valve seat and a throttlling part extending beyond the flexible part and into the valve seat to throttle the fluid flow therebetween when the stepper motor has moved the flexible part away from the valve seat and the throttling part has a portion thereof disposed in the valve seat.
    Type: Grant
    Filed: November 20, 1989
    Date of Patent: November 13, 1990
    Assignee: Robertshaw Controls Company
    Inventors: Richard B. Reich, George W. Feild