Patents by Inventor Dwayne M. Puckett

Dwayne M. Puckett 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).

  • Valve position controller
    Patent number: 5654885
    Abstract: A valve position controller (10) for controlling the position of an industrial-valve element (29, 29') includes a check valve (72, 74) in each of closing and opening pressurized-fluid input lines (68, 70) for respectively leading pressurized fluids from a pressurized source (30) to closing and opening solenoid actuating valves (106, 104) via a common input fork (62). The valve position controller can be changed between a fail-in-place" mode, and a "fail-closed" mode by interchanging input and exhaust lines (68, 88) to an opening actuating valve (64) and reversing electrical operation of a solenoid (104) of the opening actuating valve. A needle valve (94) in a common exhaust line allows speed of the system to be optimized for a set resolution.
    Type: Grant
    Filed: March 28, 1995
    Date of Patent: August 5, 1997
    Assignee: Virginia Valve Company Corporation
    Inventors: John Mayhew, Dwayne M. Puckett