Patents by Inventor Robert G. Roycroft
Robert G. Roycroft 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: 20240102364Abstract: Described herein are embodiments of systems, apparatuses, and methods that include a center rod plunger, wherein movement and/or placement of the center rod is at least partially controlled by the center rod including a centering section that keeps the center rod more centered in the center rod plunger's housing. The center rod plunger may also include a clutch for retarding movement of the center rod in the housing. In still other embodiments, the center rod may have a shaft whose diameter may vary and a clutch that may include a one-piece device.Type: ApplicationFiled: November 30, 2023Publication date: March 28, 2024Applicant: Epic Lift SystemsInventors: Robert G. Roycroft, Shannon S. Freeman
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Publication number: 20240102464Abstract: Described herein are embodiments of systems, apparatuses, and methods that include a center rod plunger, wherein movement of the center rod between an open and a closed position is at least partially controlled by a clutch. The center rod has a shaft whose diameter may vary such that the clutch imparts a corresponding varying degree of friction on the center rod and such that less friction is imparted when the center rod is in its open and/or closed position.Type: ApplicationFiled: September 8, 2023Publication date: March 28, 2024Applicant: Epic Lift SystemsInventors: Robert G. Roycroft, Shannon S. Freeman
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Publication number: 20230287762Abstract: Described herein are embodiments of systems and apparatuses that include a dart and/or a clutch for a dart plunger. In an exemplary embodiment, the dart plunger includes a dart adapted to move between a first position and a second position and also between a maximum closed position and a minimum closed position. Varying diameters of the dart, and/or the opening in which the clutch is retained, enable the clutch to variably retard movement of the dart between its first, second, maximum, and minimum positions.Type: ApplicationFiled: May 17, 2023Publication date: September 14, 2023Applicant: Epic Lift SystemsInventors: Robert G. Roycroft, Shannon Freeman
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Publication number: 20230287769Abstract: Described herein are embodiments of an improved bypass lubricator. The lubricator may include a body having a bore, where the bore may include at least an upper exit bore and a lower exit bore. The lubricator may also include an exit flow path that also has a bore, wherein the bore of the exit flow path is in fluid communication with the upper exit bore, the lower exit bore, and an exit valve. The upper exit bore and the lower exit bore may be sized relative to one another to create a pressure differential between the upper and lower exit bores to assist in maintaining an artificial lift device in the lubricator’s body. Shutting the exit valve shuts in the well.Type: ApplicationFiled: March 6, 2023Publication date: September 14, 2023Applicant: Epic Lift SystemsInventors: Robert G. Roycroft, Shannon S. Freeman, Aaron Michael Benjamin Skeete
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Publication number: 20230175353Abstract: Described herein are embodiments of systems and apparatuses that include a dart and/or a clutch for a dart plunger. In an exemplary embodiment, the dart plunger includes a dart adapted to move between a first position and a second position and also between a maximum closed position and a minimum closed position. Varying diameters of the dart enable the clutch to variably retard movement of the dart between its first, second, maximum, and minimum positions.Type: ApplicationFiled: February 3, 2023Publication date: June 8, 2023Applicant: Epic Lift SystemsInventors: Robert G. Roycroft, Shannon Freeman
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Publication number: 20230029090Abstract: Described herein are embodiments of systems and apparatuses that include a dart and/or a clutch for a dart plunger. In an exemplary embodiment, the clutch consists of a one-piece unit having a length, an outside diameter, and an inside diameter where at least a portion of the inside diameter is sized to create a frictional interface with a dart. The clutch may also include a gap, a slot, and/or a spiral cut. The dart may include a shaft having opposite ends and a shaft diameter that varies between the opposite ends.Type: ApplicationFiled: May 23, 2022Publication date: January 26, 2023Applicant: Epic Lift SystemsInventors: Robert G. Roycroft, Shannon Freeman
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Patent number: 10907452Abstract: Embodiments of well plunger systems, assemblies, and apparatuses are described. In an embodiment, the apparatus includes a body having a first open end, a second open end, and a channel extending from the first open end through the body to the second open end, the channel for passing fluid from an oil or gas well. The apparatus may also include a receiver disposed at the first open end, the receiver configured to receive a stopper configured to at least partially seal off the channel, the first open end comprising a retention member receiver configured to receive one or more specially adapted retention members for applying a retention force to the stopper when the stopper is engaged with the receiver.Type: GrantFiled: November 15, 2018Date of Patent: February 2, 2021Assignee: PATRIOT ARTIFICIAL LIFT, LLCInventors: Robert G. Roycroft, Darrell W. Mitchum
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Publication number: 20190085666Abstract: Embodiments of well plunger systems, assemblies, and apparatuses are described. In an embodiment, the apparatus includes a body having a first open end, a second open end, and a channel extending from the first open end through the body to the second open end, the channel for passing fluid from an oil or gas well. The apparatus may also include a receiver disposed at the first open end, the receiver configured to receive a stopper configured to at least partially seal off the channel, the first open end comprising a retention member receiver configured to receive one or more specially adapted retention members for applying a retention force to the stopper when the stopper is engaged with the receiver.Type: ApplicationFiled: November 15, 2018Publication date: March 21, 2019Applicant: Patriot Artificial Lift, LLCInventors: Robert G. Roycroft, Darrell W. Mitchum
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Patent number: 10161230Abstract: Embodiments of well plunger systems, assemblies, and apparatuses are described. In an embodiment, the apparatus includes a body having a first open end, a second open end, and a channel extending from the first open end through the body to the second open end, the channel for passing fluid from an oil or gas well. The apparatus may also include a receiver disposed at the first open end, the receiver configured to receive a stopper configured to at least partially seal off the channel, the first open end comprising a retention member receiver configured to receive one or more specially adapted retention members for applying a retention force to the stopper when the stopper is engaged with the receiver.Type: GrantFiled: March 15, 2016Date of Patent: December 25, 2018Assignee: Patriot Artificial Lift, LLCInventors: Robert G. Roycroft, Darrell W. Mitchum
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Publication number: 20170268318Abstract: Embodiments of well plunger systems, assemblies, and apparatuses are described. In an embodiment, the apparatus includes a body having a first open end, a second open end, and a channel extending from the first open end through the body to the second open end, the channel for passing fluid from an oil or gas well. The apparatus may also include a receiver disposed at the first open end, the receiver configured to receive a stopper configured to at least partially seal off the channel, the first open end comprising a retention member receiver configured to receive one or more specially adapted retention members for applying a retention force to the stopper when the stopper is engaged with the receiver.Type: ApplicationFiled: March 15, 2016Publication date: September 21, 2017Applicant: Patriot Artificial Lift, LLCInventors: Robert G. Roycroft, Darrell W. Mitchum
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Publication number: 20160215600Abstract: Embodiments of an improved bypass dart and assembly are described. In an embodiment, the plunger assembly includes a plunger having a first and second end. The plunger assembly may also include a cage attached to the second end of the plunger. Additionally, the plunger assembly may include a dart disposed within said cage. Further, the assembly may include an actuator coupled to the dart, the actuator configured to actuate the dart from a first position to a second position.Type: ApplicationFiled: March 31, 2016Publication date: July 28, 2016Applicant: Patriot Artificial Lift, LLCInventors: Robert G. Roycroft, Darrell W. Mitchum
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Publication number: 20160168963Abstract: A plunger assembly for down-hole use in a well. In one embodiment, the plunger assembly comprises a plunger having a first and second end, a cage attached to the second end of the plunger, and a dart disposed within the cage having a body with at least two surfaces, where one surface is a raised surface relative to the other, lower surface.Type: ApplicationFiled: December 15, 2014Publication date: June 16, 2016Inventors: Robert G. Roycroft, Darrell W. Mitchum
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Patent number: 9261277Abstract: In a multistage combustion furnace having a motor driven inducer blower and a pressure sensing device or set of switches for sensing pressure in the combustion gas flowpath through the furnace, a high firing rate blower speed and low firing rate blower speed are set based on the blower speed setting required for a medium firing rate. Each particular furnace, having its own pressures and combustion gas resistance to flow characteristics, may be provided with a database of inducer blower motor speeds required to achieve predetermined pressures in the combustion gas flowpath for a variety of combustion gas venting systems generating such resistance.Type: GrantFiled: August 15, 2007Date of Patent: February 16, 2016Assignee: Trane International Inc.Inventors: Gordon Jeffrey Hugghins, Stephen Kowalski, Robert G. Roycroft
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Publication number: 20160017700Abstract: A bumper assembly for down-hole use in a well. In one embodiment, the bumper assembly includes a fish neck, a cage, and a progressive rate spring disposed there-between. When a plunger strikes the top of the fish neck, the progressive rate spring dampens the force delivered by the plunger, thereby prolonging the useful life of the plunger and/or the bumper assembly.Type: ApplicationFiled: July 16, 2014Publication date: January 21, 2016Inventors: Robert G. Roycroft, Darrell W. Mitchum
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Patent number: 7601204Abstract: An air conditioning apparatus includes a cabinet having air inlet and outlet openings and an intense field dielectric air filtration system disposed in the cabinet between the inlet and outlet openings. The filtration system includes a field charging unit and a filter unit. The filter unit may be mounted for removal from the cabinet on spaced apart support brackets connected to the cabinet or to a frame of the field charging unit. Electrical contact elements may be supported by the support brackets for engagement with corresponding contact elements on the filter unit and charging unit for establishing electrical communication between a power supply and the charging unit and filter unit, respectively. A shorting bar is aligned with the contact members on the filter unit for discharging high voltage potential upon removal of the filter unit from the cabinet.Type: GrantFiled: September 6, 2006Date of Patent: October 13, 2009Assignee: Trane International Inc.Inventors: Mark D. Woodruff, Kirk W. Beason, Larry Stephen Bias, Robert G. Roycroft, Lester D. Sherrow, Stephen J. Vendt
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Publication number: 20090044794Abstract: In a multistage combustion furnace having a motor driven inducer blower and a pressure sensing device or set of switches for sensing pressure in the combustion gas flowpath through the furnace, a high firing rate blower speed and low firing rate blower speed are set based on the blower speed setting required for a medium firing rate. Each particular furnace, having its own pressures and combustion gas resistance to flow characteristics, may be provided with a database of inducer blower motor speeds required to achieve predetermined pressures in the combustion gas flowpath for a variety of combustion gas venting systems generating such resistance.Type: ApplicationFiled: August 15, 2007Publication date: February 19, 2009Inventors: Gordon Jeffrey Hugghins, Stephen Kowalski, Robert G. Roycroft
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Publication number: 20080053309Abstract: An air conditioning apparatus includes a cabinet having air inlet and outlet openings and an intense field dielectric air filtration system disposed in the cabinet between the inlet and outlet openings. The filtration system includes a field charging unit and a filter unit. The filter unit may be mounted for removal from the cabinet on spaced apart support brackets connected to the cabinet or to a frame of the field charging unit. Electrical contact elements may be supported by the support brackets for engagement with corresponding contact elements on the filter unit and charging unit for establishing electrical communication between a power supply and the charging unit and filter unit, respectively. A shorting bar is aligned with the contact members on the filter unit for discharging high voltage potential upon removal of the filter unit from the cabinet.Type: ApplicationFiled: September 6, 2006Publication date: March 6, 2008Applicant: AMERICAN STANDARD INTERNATIONAL INC.Inventors: Mark D. Woodruff, Kirk W. Beason, Larry Stephen Bias, Robert G. Roycroft, Lester D. Sherrow, Stephen J. Vendt