Patents by Inventor Daniel Greenfield Lattimer

Daniel Greenfield Lattimer 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).

  • Pressure relief valve
    Patent number: 9739385
    Abstract: An inlet port provides a fluid entrance to a body. A chamber has an inner surface. An outlet port is in fluid communication with the chamber and provides a fluid exit from the body. The piston is moveable within the chamber between a first set position, in which the inlet port is not in fluid communication with the outlet port, and a second open position, in which the inlet port is in fluid communication with the outlet port through the chamber. A seal guard is slidably disposed within the chamber. The seal guard is moveable between a first seal-guard position and a second seal-guard position in which the seal guard shields the seal. The seal guard is in the first seal-guard position when the piston is in its first set position and in the second seal-guard position when the piston is in its second open position.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: August 22, 2017
    Assignee: Marathon Valve LLC
    Inventor: Daniel Greenfield Lattimer
  • Pressure relief valve
    Patent number: 9395008
    Abstract: A second piece nests within a first piece and has a circumferential groove. A vent penetrates the first piece and matches the circumferential groove when the second piece is nested within the first piece. An o-ring is modified to allow equal pressure on either side of the o-ring.
    Type: Grant
    Filed: June 10, 2015
    Date of Patent: July 19, 2016
    Assignee: Marathon Valve LLC
    Inventor: Daniel Greenfield Lattimer
  • Pressure relief valve
    Patent number: 9371927
    Abstract: An inlet port provides a fluid entrance to a body. A chamber has an inner surface. An outlet port is in fluid communication with the chamber and provides a fluid exit from the body. The piston is moveable within the chamber between a first set position, in which the inlet port is not in fluid communication with the outlet port, and a second open position, in which the inlet port is in fluid communication with the outlet port through the chamber. A seal guard is slidably disposed within the chamber. The seal guard is moveable between a first seal-guard position and a second seal-guard position in which the seal guard shields the seal. The seal guard is in the first seal-guard position when the piston is in its first set position and in the second seal-guard position when the piston is in its second open position.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: June 21, 2016
    Assignee: Marathon Valve LLC
    Inventor: Daniel Greenfield Lattimer
  • Pressure Relief Valve
    Publication number: 20150276076
    Abstract: A second piece nests within a first piece and has a circumferential groove. A vent penetrates the first piece and matches the circumferential groove when the second piece is nested within the first piece. An o-ring is modified to allow equal pressure on either side of the o-ring.
    Type: Application
    Filed: June 10, 2015
    Publication date: October 1, 2015
    Inventor: Daniel Greenfield Lattimer