Patents by Inventor Leland E. Gelnett

Leland E. Gelnett 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).

  • Gas metering diaphragm
    Patent number: 8104397
    Abstract: A diaphragm for use in a gas meter that includes an expansion section having a series of convolutions. During repeated use of the diaphragm, the expansion section flexes to allow the center section of the diaphragm and the attached diaphragm disk to move between a retracted position and extended position. The convolutions formed in the expansion section include a series of curved peaks and curved troughs joined by web sections. The multiple convolutions in the expansion section allows for more consistent and repeatable movement and volume displacement of the diaphragm between the extended and retracted positions. The action of the convolutions also contributes to extended life by eliminating wrinkling of the diaphragm material.
    Type: Grant
    Filed: September 30, 2008
    Date of Patent: January 31, 2012
    Assignee: M&FC Holding, LLC
    Inventor: Leland E. Gelnett
  • GAS METERING DIAPHRAGM
    Publication number: 20100077852
    Abstract: A diaphragm for use in a gas meter that includes an expansion section having a series of convolutions. During repeated use of the diaphragm, the expansion section flexes to allow the center section of the diaphragm and the attached diaphragm disk to move between a retracted position and extended position. The convolutions formed in the expansion section include a series of curved peaks and curved troughs joined by web sections. The multiple convolutions in the expansion section allows for more consistent and repeatable movement and volume displacement of the diaphragm between the extended and retracted positions. The action of the convolutions also contributes to extended life by eliminating wrinkling of the diaphragm material.
    Type: Application
    Filed: September 30, 2008
    Publication date: April 1, 2010
    Applicant: M&FC HOLDING, LLC
    Inventor: Leland E. Gelnett
  • Axial flow throttling valve
    Patent number: 4228819
    Abstract: This application discloses a tube-type throttling valve assembly and the particular construction of the valve, along with the control passages and associated pilot controls.
    Type: Grant
    Filed: July 17, 1978
    Date of Patent: October 21, 1980
    Assignee: Rockwell International Corporation
    Inventors: John M. Kruse, Leland E. Gelnett
  • Axial flow throttling valve
    Patent number: 4138087
    Abstract: This application discloses a tube-type throttling valve assembly and the particular construction of the valve, along with the control passages and associated pilot controls.
    Type: Grant
    Filed: September 29, 1977
    Date of Patent: February 6, 1979
    Assignee: Rockwell International Corporation
    Inventors: John M. Kruse, Leland E. Gelnett
  • Control line relief valve
    Patent number: 4111223
    Abstract: The invention covers a control line relief valve which restricts control line flow in the event of overpressurization, and vents one portion of the line.
    Type: Grant
    Filed: September 27, 1976
    Date of Patent: September 5, 1978
    Assignee: Rockwell International Corporation
    Inventor: Leland E. Gelnett