Patents by Inventor Walter R. Chapman
Walter R. Chapman 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).
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Publication number: 20200248818Abstract: A modulating intake valve having a low internal pressure drop used in conjunction with a gas compressor, including a valve body having a gas inlet and a gas outlet. A self modulating, hemispherical shaped poppet within the valve body moves closer or further from a valve seat to control the gas flow into the inlet and out of the outlet into the gas compressor. The hemispherical poppet valve functions as a check valve to close against the valve seat and prevent flow of gas and oil from the compressor through the valve body and out of the gas inlet. A modulating piston disposed in a cage located between the gas inlet and the gas outlet. A control gas inlet port opens into a passageway to direct control gas to a space between the piston and the cage set to move the piston and hemispherical poppet valve at a given pressure.Type: ApplicationFiled: January 31, 2019Publication date: August 6, 2020Inventor: Walter R. Chapman, JR.
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Publication number: 20190249791Abstract: A back-pressure valve having a lower internal pressure drop used in conjunction with a compressor. The back-pressure valve includes a valve body with a fluid inlet and a fluid outlet wherein the fluid inlet is disposed at an angle of 90 degrees to the fluid outlet. The valve body includes a self-modulating back pressure valve set to open at a given pressure. The self-modulating back pressure valve includes a valve for moving towards and away from a valve seat to allow fluid flow from the fluid inlet to the fluid outlet when the valve is spaced from the valve seat. The valve seat forms an orifice. The ratio of the area of the orifice to an area of the fluid flow channel from the valve inlet to the valve outlet of the minimum pressure valve reduces the pressure drop required for the fluid to pass thru the valve.Type: ApplicationFiled: February 14, 2018Publication date: August 15, 2019Inventor: Walter R. Chapman, JR.
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Publication number: 20150107680Abstract: A modulating check valve and method of operating the modulating check valve adapted for mounting to an inlet of a compressor. The modulating check valve includes a flow section through which fluid flow. The flow section has an intake portal and an outlet portal connected to the inlet of the compressor. A flapper valve is disposed in the flow section to prevent backflow from the outlet portal to the intake portal. An actuator controls the flapper valve allowing the flapper valve to open, close and modulate the fluid flow from the intake portal to the outlet portal of the flow section in response to fluid pressure at an outlet of the compressor.Type: ApplicationFiled: October 23, 2013Publication date: April 23, 2015Inventors: Walter R. Chapman, JR., James W. Swoger
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Patent number: 7373980Abstract: In systems and methods for production of hydrocarbons fluids from a formation surrounding a wellbore, a production assembly is cemented into place, and excess cement is then cleaned from the production tubing and liner. Thereafter, hydrocarbon fluids are produced and artificial gas lift assistance is provided. All of this may be accomplished in a single trip (mono-trip) of the production tubing.Type: GrantFiled: June 30, 2006Date of Patent: May 20, 2008Assignee: Baker Hughes IncorporatedInventors: Keith E. Lewis, Anthony James Orchard, Joseph C. H. Yeo, Jim H. Kritzler, Walter R. Chapman, James H. Holt
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Patent number: 7228897Abstract: Well completion cement may be pumped through a side pocket mandrel that includes parallel rows of filler sections to exclude cement from void space within the side pocket tube. The filler sections are drilled with cross-flow jet channels and surface upsets to stimulate scrubbing turbulence by well working fluid behind a cement wiper plug. The wiper plug includes leading and trailing groups of wiper discs secured to an elongated shaft. The two wiper groups are separated by a distance that permits the leading seal group to gain traction seal before the push seal on the trailing wiper group is lost. A spring centralizer spans a center section of the shaft between the two wiper groups to maintain axial alignment of the shaft as the plug traverses the length of a mandrel.Type: GrantFiled: October 1, 2003Date of Patent: June 12, 2007Assignee: Baker Hughes IncorporatedInventors: James H. Holt, Jr., Walter R. Chapman, James H. Kritzler, Jeffrey L. Osselburn, Keith E. Lewis
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Patent number: 7069992Abstract: In systems and methods for production of hydrocarbons fluids from a formation surrounding a wellbore, a production assembly is cemented into place, and excess cement is then cleaned from the production tubing and liner. Thereafter, hydrocarbon fluids are produced and artificial gas lift assistance is provided. All of this may be accomplished in a single trip (mono-trip) of the production tubing.Type: GrantFiled: October 1, 2003Date of Patent: July 4, 2006Assignee: Baker Hughes IncorporatedInventors: Keith E. Lewis, Anthony James Orchard, Joseph C. H. Yeo, Jim H. Kritzler, Walter R. Chapman, James H. Holt
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Publication number: 20040112606Abstract: In systems and methods for production of hydrocarbons fluids from a formation surrounding a wellbore, a production assembly is cemented into place, and excess cement is then cleaned from the production tubing and liner. Thereafter, hydrocarbon fluids are produced and artificial gas lift assistance is provided. All of this may be accomplished in a single trip (mono-trip) of the production tubing.Type: ApplicationFiled: October 1, 2003Publication date: June 17, 2004Applicant: Baker Hughes IncorporatedInventors: Keith E. Lewis, Anthony James Orchard, Joseph C. H. Yeo, Jim H. Kritzler, Walter R. Chapman, James H. Holt
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Publication number: 20040112599Abstract: Well completion cement may be pumped through a side pocket mandrel that includes parallel rows of filler sections to exclude cement from void space within the side pocket tube. The filler sections are drilled with cross-flow jet channels and surface upsets to stimulate scrubbing turbulence by well working fluid behind a cement wiper plug. The wiper plug includes leading and trailing groups of wiper discs secured to an elongated shaft. The two wiper groups are separated by a distance that permits the leading seal group to gain traction seal before the push seal on the trailing wiper group is lost. A spring centralizer spans a center section of the shaft between the two wiper groups to maintain axial alignment of the shaft as the plug traverses the length of a mandrel.Type: ApplicationFiled: October 1, 2003Publication date: June 17, 2004Applicant: Baker Hughes IncorporatedInventors: James H. Holt, Walter R. Chapman, James H. Kritzler, Jeffrey L. Osselburn, Keith E. Lewis
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Patent number: 5896004Abstract: A linear double ended lamp can be modified into a number of non-linear arrangements by heating selected regions of the lamp ends to the softening temperature and bending the lamp ends to a desired angular configuration. Preferably, the lamp ends are bent across the sealing foil that is hermetically sealed to the lamp envelope. One or both ends of the lamp can be bent as desired to define a variety of configurations. According to the method of forming the bent double ended lamp, selected regions of the lamp are raised above the softening temperature while the remainder of the lamp is maintained at a lower temperature. Preferably, the lamp ends are bent along an axis offset and parallel to the longitudinal axis of the lamp to prevent accumulation of material.Type: GrantFiled: January 14, 1998Date of Patent: April 20, 1999Assignee: General Electric CompanyInventors: Joseph Feldman, Richard L. Hansler, Walter R. Chapman, Jr., John M. Davenport, Rocco T. Giordano, Gary R. Allen, William J. Cassarly, Victor A. Levand, Jr., deceased, Martin N. Hassink
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Patent number: 5430353Abstract: A lamp inlead assembly for a light source having a lamp envelope with at least one end region in which the lamp inlead assembly is sealably disposed includes and outer lead wire member to which power to the light source is coupled, an inner lead wire member to which the light generating device is connected, whether incandescent or discharge, and a thin foil member disposed therebetween on which the inner and outer lead wire members are fixedly secured. The thin foil member is constructed of molybdenum and is essentially uniform in thickness throughout.Type: GrantFiled: July 22, 1993Date of Patent: July 4, 1995Assignee: General Electric CompanyInventors: Joseph Feldman, Walter R. Chapman, Jr., Edward J. Collins, Daniel L. Connell, Gerald A. Johnson, Benton A. Lee, William R. Walters
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Patent number: 5019743Abstract: An elongated tubular lamp such as an arc lamp or tungsten halogen lamp mounted in a reflector or lamp mount by means of a long and a short mount wire is more resistant to breaking off the mount wires if the short mount wire is smaller in diameter than the long mount wire, but not smaller than the diameter of the lamp lead wire to which it is welded in combination with the lamp lead wire being molybdenum alloy having a recrystallization temperature at least about 200.degree. C. higher than molybdenum.Type: GrantFiled: November 17, 1989Date of Patent: May 28, 1991Assignee: General Electric CompanyInventors: Ronald J. Olwert, Frank E. Zalar, Walter R. Chapman, Jr.
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Patent number: 4826134Abstract: A valve having a valve member of diameter less than the bore of an air compressor inlet which closes against a seal of flexible material such as TFE projecting into the bore of the inlet.Type: GrantFiled: July 27, 1988Date of Patent: May 2, 1989Inventor: Walter R. Chapman
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Patent number: 3999568Abstract: A check valve having a piston with a greater coefficient of thermal expansion than the body which closes a bleeder port at running temperatures and opens the bleeder port when flow stops or when the valve cools. A body of brass and a piston of filled TFE is a preferred combination.Type: GrantFiled: January 13, 1976Date of Patent: December 28, 1976Inventor: Walter R. Chapman