Patents by Inventor J. Robert Glomeau

J. Robert Glomeau 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).

  • Flow control valve and hydraulic system employing same
    Patent number: 6065288
    Abstract: The hydraulic control system disclosed herein employs a pair of combination poppet/spool valves to control the operation of a hydraulic cylinder driven from a bidirectional pump. Flow introduced through the source port of one valve lifts the poppet of the other valve on its way to one side of the cylinder which in turn opens a throttling port to modulate return flow from the other side of the cylinder.
    Type: Grant
    Filed: August 10, 1998
    Date of Patent: May 23, 2000
    Inventor: J. Robert Glomeau
  • Flow control valve and hydraulic system employing same
    Patent number: 5791143
    Abstract: The hydraulic control system disclosed herein employs a pair of combination poppet/spool valves to control the operation of a hydraulic cylinder driven from a bidirectional pump. Flow introduced through the source port of one valve lifts the poppet of the other valve on its way to one side of the cylinder which in turn opens a throttling port to modulate return flow from the other side of the cylinder.
    Type: Grant
    Filed: April 16, 1997
    Date of Patent: August 11, 1998
    Inventor: J. Robert Glomeau
  • Flow matching valve and hydraulic system employing same
    Patent number: 4766728
    Abstract: The flow matching valve disclosed herein incorporates a fill port in addition to the source, load and respective drain ports employed in previous load matching valves. The inclusion of the fill port allows reconfiguration of hydraulic systems to reduce leakage and improve reliability and to eliminate auxiliary check valves in certain configurations.
    Type: Grant
    Filed: September 28, 1987
    Date of Patent: August 30, 1988
    Assignee: Rexa Corporation
    Inventor: J. Robert Glomeau
  • Pneumatic actuator apparatus
    Patent number: 4741247
    Abstract: The apparatus disclosed herein provides controlled operation of a pneumatic actuator by effecting charging and discharging of the actuator through an intermediate step volume, the pressure in the step volume being regulated as a respective function of the existing pressure in the actuator during charging and discharging.
    Type: Grant
    Filed: September 17, 1986
    Date of Patent: May 3, 1988
    Assignee: Rexa Corporation
    Inventors: J. Robert Glomeau, Gareth A. Keith
  • Control valve and hydraulic system employing same
    Patent number: 4696163
    Abstract: The valve disclosed herein functions as a flow matching device. By employing such a valve, hydraulic systems may be implemented in which filling and emptying of a variable volume load, such as a hydraulic piston, may be accomplished through simple check valve structures at controlled flow rates.
    Type: Grant
    Filed: November 16, 1984
    Date of Patent: September 29, 1987
    Assignee: REXA Corporation
    Inventor: J. Robert Glomeau
  • Controlled flow hydraulic system
    Patent number: 4625513
    Abstract: In the hydraulic system disclosed herein, a flow matching device is employed to implement a system in which filling, emptying and holding of a variable volume load, such as a hydraulic piston, may be accomplished at controlled flow rate by a hydraulic circuit including a flow matching control valve.
    Type: Grant
    Filed: March 28, 1983
    Date of Patent: December 2, 1986
    Assignee: REXA Corporation
    Inventor: J. Robert Glomeau
  • Control valve and hydraulic system employing same
    Patent number: 4557180
    Abstract: The valve disclosed herein functions, in one sense, as a flow matching device and, in another sense, as a reciprocative check valve. By employing the valve, a hydraulic system may be implemented in which filling and emptying of a variable volume load, such as a hydraulic piston may be accomplished through a single check valve structure at controlled flow rates.
    Type: Grant
    Filed: March 28, 1983
    Date of Patent: December 10, 1985
    Assignee: Rexa Corporation
    Inventor: J. Robert Glomeau