Patents by Inventor Ricky E. Spears

Ricky E. Spears 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).

  • Dual isolation valve with rectangular flow passageways
    Patent number: 6182696
    Abstract: A dual isolation valve comprises: a valve body with opposed inlet and outlet ports that defines an inner cavity; a first valve member; and a second valve member. The first valve member (preferably a plug) has a narrower first end and a wider second end and is rotatably mounted within the valve body cavity for rotation about a first axis of rotation substantially perpendicular to the flow axis defined by the inlet and outlet ports. The first valve member includes a substantially rectangular flow passage.
    Type: Grant
    Filed: October 27, 1998
    Date of Patent: February 6, 2001
    Assignee: Nordstrom Valves, Inc.
    Inventors: Edward L. Rainwater, Ricky E. Spears
  • Dual isolation valve with rectangular flow passageways
    Patent number: 6012486
    Abstract: A dual isolation valve comprises: a valve body with opposed inlet and outlet ports that defines an inner cavity; a first valve member; and a second valve member. The first valve member (preferably a plug) has a narrower first end and a wider second end and is rotatably mounted within the valve body cavity for rotation about a first axis of rotation substantially perpendicular to the flow axis defined by the inlet and outlet ports. The first valve member includes a substantially rectangular flow passage.
    Type: Grant
    Filed: October 27, 1998
    Date of Patent: January 11, 2000
    Assignee: Nordstrom Valves, Inc.
    Inventors: Edward L. Rainwater, Ricky E. Spears
  • Plastic ball valve stem seal
    Patent number: 5232201
    Abstract: A plastic ball valve having improved valve stem sealing means.
    Type: Grant
    Filed: January 7, 1992
    Date of Patent: August 3, 1993
    Assignee: M&FC Holding Company, Inc.
    Inventors: Ricky E. Spears, Frank D. Sears, Stephen M. Horvath
  • Method for assembling a plastic ball valve
    Patent number: 5169124
    Abstract: A method for assembling a plastic ball valve having improved sealing means.
    Type: Grant
    Filed: May 6, 1992
    Date of Patent: December 8, 1992
    Assignee: M&FC Holding Company, Inc.
    Inventors: Ricky E. Spears, Frank D. Sears, Stephen M. Horvath
  • Plastic ball valve ball seal means
    Patent number: 5165658
    Abstract: A plastic ball valve having improved ball sealing means.
    Type: Grant
    Filed: May 6, 1992
    Date of Patent: November 24, 1992
    Assignee: M&FC Holding Company, Inc.
    Inventors: Ricky E. Spears, Frank D. Sears, Stephen M. Horvath