Patents by Inventor Rodney C. Hope

Rodney C. Hope 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).

  • Patent number: 7243671
    Abstract: A chatter resistant shuttle valve is provided to direct fluid flow from at least two sources of pressurized fluid to a downstream apparatus. The shuttle valve includes a valve body with a shuttle valve member movably mounted inside. A dampening chamber is provided which dampen opening movement of the shuttle as it moved from a closed position on one side of the shuttle toward a closed position on the other end of the shuttle. One or more dampening chambers may be provided.
    Type: Grant
    Filed: November 29, 2006
    Date of Patent: July 17, 2007
    Assignee: Gilmore Valve Co., Ltd.
    Inventors: Thomas B. Thrash, Jr., Rodney C. Hope
  • Patent number: 7225831
    Abstract: A fluid flow control valve that may be used as both a check valve and a relief valve. The valve includes a moveable valve member having a surface capable of forming two or more valve seal areas with two or more valve seat surfaces on a valve seat member. The valve seat surfaces may be formed by coining a portion of valve seat surfaces on fingers of the valve seat member. One of the valve seat fingers in inclined from the outlet toward the inlet. The valve seat member is metal, forming a metal to metal valve seat arrangement with the valve seat member.
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: June 5, 2007
    Assignee: Gilmore Valve Co., Ltd.
    Inventors: Rodney C. Hope, Donald J. Winnike, Thomas B. Thrash, Jr.
  • Patent number: 7159605
    Abstract: A chatter resistant shuttle valve is provided to direct fluid flow from at least two sources of pressurized fluid to a downstream apparatus. The shuttle valve includes a valve body with a shuttle valve member movably mounted inside. A dampening chamber is provided which dampen opening movement of the shuttle as it moved from a closed position on one side of the shuttle toward a closed position on the other end of the shuttle. One or more dampening chambers may be provided.
    Type: Grant
    Filed: August 8, 2003
    Date of Patent: January 9, 2007
    Assignee: Gilmore Valve Co., Ltd.
    Inventors: Thomas B. Thrash, Jr., Rodney C. Hope
  • Patent number: 6843266
    Abstract: The regulator connects to a high pressure fluid supply and regulates the pressure to a downstream apparatus. If an over-pressure occurs, it is vented to atmosphere. An elongate control stem engages a supply seal assembly and a vent seal assembly and moves axially with respect to these seal assemblies to achieve regulation and venting. During high fluid flow, the supply seal assembly and the vent seal assembly are not in the fluid flow path of the regulator which makes the seal assemblies more resistant to erosion from fluid flow. The fluid flow path through the regulator is partially in hollow passageways in the elongate control stem.
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: January 18, 2005
    Assignee: Gilmore Valve Co., Ltd.
    Inventors: Rodney C. Hope, Thomas B. Thrash, Jr., Dennis S. Norton
  • Patent number: 6805360
    Abstract: The regulator connects to a high pressure fluid supply and regulates the pressure to a downstream apparatus. If an over-pressure occurs, it is vented to atmosphere. A segmented body reduces production cost. An elongate control stem engages a supply seal assembly and a vent seal assembly and moves axially with respect to these seal assemblies to achieve regulation and venting. Both the supply seal assembly and the vent seal assembly are bi-directional and operate when forces are applied from opposing directions.
    Type: Grant
    Filed: October 11, 2002
    Date of Patent: October 19, 2004
    Assignee: Gilmore Valve Co., Ltd.
    Inventors: Rodney C. Hope, Thomas W. Neugebauer
  • Patent number: 6651696
    Abstract: A relief valve with two outlet ports increases the flow capacity of the valve when open. In an alternative embodiment, a relief valve with two outlet ports also has at least two springs stacked vertically. Alternative seal assemblies can be used with the aforementioned dual outlet port valves.
    Type: Grant
    Filed: September 20, 2001
    Date of Patent: November 25, 2003
    Assignee: Gilmore Valve Co., Ltd.
    Inventors: Rodney C. Hope, Richard R. Watson, F. Harold Hollister
  • Publication number: 20030131884
    Abstract: The regulator connects to a high pressure fluid supply and regulates the pressure to a downstream apparatus. If an over-pressure occurs, it is vented to atmosphere. An elongate control stem engages a supply seal assembly and a vent seal assembly and moves axially with respect to these seal assemblies to achieve regulation and venting. During high fluid flow, the supply seal assembly and the vent seal assembly are not in the fluid flow path of the regulator which makes the seal assemblies more resistant to erosion from fluid flow. The fluid flow path through the regulator is partially contained in hollow passageways in the elongate control stem.
    Type: Application
    Filed: April 1, 2003
    Publication date: July 17, 2003
    Applicant: Gilmore Valve Co., Ltd.
    Inventors: Rodney C. Hope , Thomas B. Thrash , Dennis S. Norton
  • Patent number: 6568418
    Abstract: The precision regulator connects to a high pressure fluid source and regulates the pressure to a downstream apparatus. If an overpressure occurs, it can be vented to atmosphere. An elongate control stem engages a supply seal assembly and a vent seal assembly and moves axially and past these seal assemblies to achieve regulation and venting. The set point of the regulator can be adjusted by rotation of an adjustment knob that adjusts the position of the elongate control stem relative to the supply seal assembly and the vent seal assembly. Regulation is achieved primarily by use of a sensor piston which transfers fluid pressure from a regulated port to the sensor piston which is opposed by a spring. Both the supply seal assembly and the vent seal assembly rely upon an o-ring and a seal ring to achieve a seal with the outside circumference of the control stem. The o-ring is compressed and distorted, thus exerting forces against the seal ring to achieve a better seal.
    Type: Grant
    Filed: August 16, 2000
    Date of Patent: May 27, 2003
    Assignee: Gilmore Valve Co., Ltd.
    Inventors: Rodney C. Hope, Thomas W. Neugebauer, Richard R. Watson
  • Publication number: 20030057658
    Abstract: The regulator connects to a high pressure fluid supply and regulates the pressure to a downstream apparatus. If an over-pressure occurs, it is vented to atmosphere. A segmented body reduces production costs. An elongate control stem engages a supply seal assembly and a vent seal assembly and moves axially with respect to these seal assemblies to achieve regulation and venting. Both the supply seal assembly and the vent seal assembly are bi-directional and operate when forces are applied from opposing directions.
    Type: Application
    Filed: October 11, 2002
    Publication date: March 27, 2003
    Inventors: Rodney C. Hope, Thomas W. Neugebauer
  • Publication number: 20030051756
    Abstract: A relief valve with two outlet ports increases the flow capacity of the valve when open. In an alternative embodiment, a relief valve with two outlet ports also has at least two springs stacked vertically. Alternative seal assemblies can be used with the aforementioned dual outlet port valves.
    Type: Application
    Filed: September 20, 2001
    Publication date: March 20, 2003
    Inventors: Rodney C. Hope, Richard R. Watson, F. Harold Hollister
  • Patent number: 6520478
    Abstract: A dirty fluid valve having a mechanical latching or detent system to secure the valve in an open or closed position is disclosed. The preferred detent assembly includes a c-ring that is engaged and urged outwardly by radially extending pins. The pins are urged outwardly by a ball bearing that is continuously biased by a spring carrier in combination with at least one belleville spring. The spring is captured between the spring carrier and an adjusting nut that can be rotated to vary the load on the spring. The detent assembly releasingly engages a first detent groove in the valve body when the valve piston is in the valve closed position and releasingly engages a second detent groove in the valve body when the piston is in the valve open position.
    Type: Grant
    Filed: October 18, 2001
    Date of Patent: February 18, 2003
    Assignee: Gilmore Valve Co., Ltd.
    Inventors: Rodney C. Hope, W. Robert Cox
  • Patent number: 6481454
    Abstract: The regulator connects to a high pressure fluid supply and regulates the pressure to a downstream apparatus. If an over-pressure occurs, it is vented to atmosphere. A segmented body reduces production costs. An elongate control stem engages a supply seal assembly and a vent seal assembly and moves axially with respect to these seal assemblies to achieve regulation and venting. Both the supply seal assembly and the vent seal assembly are bi-directional and operate when forces are applied from opposing directions.
    Type: Grant
    Filed: August 20, 2001
    Date of Patent: November 19, 2002
    Assignee: Gilmore Valve Co., Ltd.
    Inventors: Rodney C. Hope, Thomas W. Neugebauer
  • Patent number: 6474362
    Abstract: The normally closed, two-position, three-way latching hydroseal valve can be used in subsea applications in connection with the production of oil and natural gas. The latching hydroseal valve can be operated by remote pilot valves to open and close the latching hydroseal valve or in an alternative embodiment attached solenoid pilot valves can be used. The seal carrier has pistons of different diameters to latch the valve open after the pilot fluid is vented to atmosphere. The main seal assembly includes a bi-directional seal.
    Type: Grant
    Filed: September 20, 2001
    Date of Patent: November 5, 2002
    Assignee: Gilmore Valve Co., Ltd.
    Inventors: Rodney C. Hope, Thomas W. Neugebauer, Rick Whorton
  • Publication number: 20020023683
    Abstract: The regulator connects to a high pressure fluid supply and regulates the pressure to a downstream apparatus. If an over-pressure occurs, it is vented to atmosphere. A segmented body reduces production costs. An elongate control stem engages a supply seal assembly and a vent seal assembly and moves axially with respect to these seal assemblies to achieve regulation and venting. Both the supply seal assembly and the vent seal assembly are bi-directional and operate when forces are applied from opposing directions.
    Type: Application
    Filed: August 20, 2001
    Publication date: February 28, 2002
    Inventors: Rodney C. Hope, Thomas W. Neugebauer
  • Patent number: 6318400
    Abstract: The hydraulic shuttle valve has two coaxial supply ports and a transverse function port to direct fluid coming from alternative control sources to a blow out preventor (BOP). The valve includes a moveable shuttle with opposing tapered metal sealing surfaces to alternatively engage opposing coaxial metal valve seats. The shuttle moves back and forth into alternative sealing engagement depending on which supply port has the highest fluid pressure. As the shuttle moves from engagement with one metal seat to engagement with another, there is low or no interflow from one supply port to the other, thus maximizing the amount of fluid directed to the function port. An obtuse metal point is formed on each metal valve seat which comes into contact with a respective outward tapered sealing surface on the shuttle. Repeated movement of the shuttle to and fro displaces a portion of the metal point into a recessed chamfer.
    Type: Grant
    Filed: December 1, 1999
    Date of Patent: November 20, 2001
    Assignee: Gilmore Valve Company
    Inventors: Rodney C. Hope, Richard R. Watson, F. Harold Hollister
  • Patent number: 6257268
    Abstract: The pressure biased shuttle valve assembly in the pressure biased shuttle valve operates in conjunction with a remote operated vehicle (ROV) to actuate blow-out preventers and thus shut in the well during emergency situations. The pressure biased shuttle valve assembly opens in response to fluid pressure from the ROV. It requires little or no flow to open. These pressure biased shuttle valves are typically located subsea on a lower marine riser platform (LMRP). These platforms are sometimes brought to the surface for a periodic testing and maintenance. The pressure biased shuttle valve assembly is also used as a repair kit which facilitates easy maintenance and repair when the LMRP is brought to the surface. In one embodiment, the shuttle is rigidly connected to a piston rod. In another embodiment, there is a flexible connection between the piston rod and shuttle. The purpose of the flexible connection is to encourage a better seal in smaller size valves.
    Type: Grant
    Filed: September 1, 2000
    Date of Patent: July 10, 2001
    Assignee: Gilmore Valve Company
    Inventors: Rodney C. Hope, F. Harold Hollister
  • Patent number: 5074717
    Abstract: A fluid operated tool 30 (FIG. 4) for use in replacing a body clamped between facing platens has an open ended tubular member 31, through which the body can pass, that carries outwardly thereof, and axially extending, coplaner support arms 33, 34 at the end of which are hydraulic piston and cylinder arrangements 35, 36 for inserting between the platens to overcome the clamping force on the body, permitting it to be removed and replaced by way of the tubular member 31. The tool may be used subsea with a submersible to handle it and provide hydraulic power.
    Type: Grant
    Filed: October 5, 1990
    Date of Patent: December 24, 1991
    Assignee: Mobil Oil Corporation
    Inventors: Rodney C. Hope, John E. Lawson, Stephen A. Hatton
  • Patent number: 4906899
    Abstract: One of the low voltage output windings of a standard ballast circuit is coupled to one filament of a pair of series connected fluorescent lamps by an external current controller. The current controller acts to restrictively reduce the operating voltage applied to the filaments of one of the lamps to which it is connected, below firing value during start up operation and thereafter maintain a lower running voltage for the lamps without adversely affecting restart.
    Type: Grant
    Filed: October 16, 1986
    Date of Patent: March 6, 1990
    Inventors: Rodney C. Hope, Gale M. Hope, executrix