Patents by Inventor Timothy S. Roman
Timothy S. Roman 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: 20240079929Abstract: A fluid moving apparatus includes an electric motor having a rotor and a stator and a propeller. The rotor rotates relative to the stator on an axis to generate a rotational output. The rotational output is provided to the propeller to power the marine propulsion apparatus. The stator includes one or more coils configured to power rotation of the rotor. The one or more coils extend circumferentially around and can be coaxial on the axis. A portion of a housing of the motor extends into the aquatic environment to facilitate heat dissipation.Type: ApplicationFiled: November 3, 2023Publication date: March 7, 2024Inventors: Thomas F. Janecek, Jeremy Scott Reynolds, Robert J. Lind, Timothy S. Roman, Tyler K. Williams
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Patent number: 11831222Abstract: A fluid moving apparatus includes an electric motor having a rotor and a stator and a propeller. The rotor rotates relative to the stator on an axis to generate a rotational output. The rotational output is provided to the propeller to power the marine propulsion apparatus. The stator includes one or more coils configured to power rotation of the rotor. The one or more coils extend circumferentially around and can be coaxial on the axis. A portion of a housing of the motor extends into the aquatic environment to facilitate heat dissipation.Type: GrantFiled: March 23, 2023Date of Patent: November 28, 2023Assignee: Electric Torque Machines, Inc.Inventors: Thomas F. Janecek, Jeremy Scott Reynolds, Robert J. Lind, Timothy S. Roman, Tyler K. Williams
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Publication number: 20230271211Abstract: A back pressure regulator (“BPR”) includes a pressure housing that at least partially defines a flow chamber that the liquid flows through and the BPR has an adjustable restriction that varies with the flow rate to maintain an upstream liquid pressure. The pressure housing is contoured to distribute the liquid flow to provide radial flow into the adjustable restriction from circumferentially about the adjustable restriction. The pressure housing includes ramped and curved side passages that guide the flow and ridges that divide the flow and prevent internal collisions between the flow. A flow deflector extends into the chamber outlet to prevent the radial flows through the annular restriction from colliding. The flow deflector redirects the flows to smoothly recombine in the chamber outlet.Type: ApplicationFiled: July 21, 2021Publication date: August 31, 2023Inventors: Jason J. Willoughby, Timothy S. Roman, David C. Polovitz, Willem M. Tieleman
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Publication number: 20230231443Abstract: A fluid moving apparatus includes an electric motor having a rotor and a stator and a propeller. The rotor rotates relative to the stator on an axis to generate a rotational output. The rotational output is provided to the propeller to power the marine propulsion apparatus. The stator includes one or more coils configured to power rotation of the rotor. The one or more coils extend circumferentially around and can be coaxial on the axis. A portion of a housing of the motor extends into the aquatic environment to facilitate heat dissipation.Type: ApplicationFiled: March 23, 2023Publication date: July 20, 2023Inventors: Thomas F. Janecek, Jeremy Scott Reynolds, Robert J. Lind, Timothy S. Roman
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Patent number: 11703047Abstract: A valve for a reciprocating pump includes a housing, a first chamber, a second chamber, a first valve element, and a second valve element. The housing includes an inlet and an outlet. The first and second chambers are within the housing. The first chamber includes a first valve seat and is fluidly connected to the inlet. The second chamber includes a second valve seat and is fluidly connected to the outlet. The first valve element is disposed in the first chamber and includes a spring-loaded check valve element. The second valve element is disposed in the second chamber and includes a buoyant material.Type: GrantFiled: March 17, 2021Date of Patent: July 18, 2023Assignee: Graco Minnesota Inc.Inventor: Timothy S. Roman
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Patent number: 11646635Abstract: A fluid moving apparatus includes an electric motor having a rotor and a stator and a propeller. The rotor rotates relative to the stator on an axis to generate a rotational output. The rotational output is provided to the propeller to power the marine propulsion apparatus. The stator includes one or more coils configured to power rotation of the rotor. The one or more coils extend circumferentially around and can be coaxial on the axis. A portion of a housing of the motor extends into the aquatic environment to facilitate heat dissipation.Type: GrantFiled: October 25, 2022Date of Patent: May 9, 2023Assignee: Electric Torque Machines, Inc.Inventors: Thomas F. Janecek, Jeremy Scott Reynolds, Robert J. Lind, Timothy S. Roman
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Publication number: 20230041826Abstract: A fluid moving apparatus includes an electric motor having a rotor and a stator and a propeller. The rotor rotates relative to the stator on an axis to generate a rotational output. The rotational output is provided to the propeller to power the marine propulsion apparatus. The stator includes one or more coils configured to power rotation of the rotor. The one or more coils extend circumferentially around and can be coaxial on the axis. A portion of a housing of the motor extends into the aquatic environment to facilitate heat dissipation.Type: ApplicationFiled: October 25, 2022Publication date: February 9, 2023Inventors: Thomas F. Janecek, Jeremy Scott Reynolds, Robert J. Lind, Timothy S. Roman
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Patent number: 11499543Abstract: A surge suppressor includes a boost mechanism configured to balance pressures between a working fluid and a process fluid. The boost mechanism includes a boost member that is acted on by a charge pressure of the working fluid. A shaft extends from the boost member to a pressure control member bounding the process fluid and acting on the process fluid. The boost member can have a larger effective area than the pressure control member to provide a pressure multiplication between the charge pressure and the process fluid pressure. In addition, pressure control valves are mounted to an air housing and actuated open by the boost mechanism. Actuating one of the pressure control valves open increases the charge pressure. Actuating the other pressure control valve open decreases the charge pressure.Type: GrantFiled: May 22, 2019Date of Patent: November 15, 2022Assignee: Graco Minnesota Inc.Inventor: Timothy S. Roman
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Publication number: 20210310481Abstract: A surge suppressor includes a boost mechanism configured to balance pressures between a working fluid and a process fluid. The boost mechanism includes a boost member that is acted on by a charge pressure of the working fluid. A shaft extends from the boost member to a pressure control member bounding the process fluid and acting on the process fluid. The boost member can have a larger effective area than the pressure control member to provide a pressure multiplication between the charge pressure and the process fluid pressure. In addition, pressure control valves are mounted to an air housing and actuated open by the boost mechanism. Actuating one of the pressure control valves open increases the charge pressure. Actuating the other pressure control valve open decreases the charge pressure.Type: ApplicationFiled: May 22, 2019Publication date: October 7, 2021Inventor: Timothy S. Roman
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Publication number: 20210199102Abstract: A valve for a reciprocating pump includes a housing, a first chamber, a second chamber, a first valve element, and a second valve element. The housing includes an inlet and an outlet. The first and second chambers are within the housing. The first chamber includes a first valve seat and is fluidly connected to the inlet. The second chamber includes a second valve seat and is fluidly connected to the outlet. The first valve element is disposed in the first chamber and includes a spring-loaded check valve element. The second valve element is disposed in the second chamber and includes a buoyant material.Type: ApplicationFiled: March 17, 2021Publication date: July 1, 2021Inventor: Timothy S. Roman
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Patent number: 10982665Abstract: A valve for a reciprocating pump includes a housing, a first chamber, a second chamber, a first valve element, and a second valve element. The housing includes an inlet and an outlet. The first and second chambers are within the housing. The first chamber includes a first valve seat and is fluidly connected to the inlet. The second chamber includes a second valve seat and is fluidly connected to the outlet. The first valve element is disposed in the first chamber and includes a spring-loaded check valve element. The second valve element is disposed in the second chamber and includes a buoyant material.Type: GrantFiled: December 16, 2016Date of Patent: April 20, 2021Assignee: Graco Minnesota Inc.Inventor: Timothy S. Roman
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Patent number: 10443594Abstract: A reciprocating pump includes a housing, a rod, and a bellows. The housing surrounds a bellows chamber and a displacement chamber. A portion of the rod extends through the opening in the endcap and into the bellows chamber of the housing. A cross-section of the rod includes a lobed shape. The bellows is connected to the housing and to the rod such that the bellows surrounds a portion of the rod.Type: GrantFiled: December 16, 2016Date of Patent: October 15, 2019Assignee: Graco Minnesota Inc.Inventors: Timothy S. Roman, Andrew J. Klaphake
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Patent number: 10344751Abstract: A reciprocating pump includes a housing, a rod, a sleeve, a bellows, and a nut. The housing includes a bellows chamber and a working chamber. The rod extends into the reciprocating pump such that the rod extends through the bellows chamber and partly into the working chamber. The rod includes a shoulder. The sleeve is connected to the rod such that the sleeve surrounds a portion of the rod. The bellows is connected to the sleeve such that the bellows surrounds a portion of the sleeve. The nut is attached to a bottom end of the sleeve such that the nut clamps an end of the bellows to the bottom end of the sleeve.Type: GrantFiled: December 16, 2016Date of Patent: July 9, 2019Assignee: Graco Minnesota Inc.Inventor: Timothy S. Roman
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Patent number: 10072652Abstract: A pump system comprises an electric motor, a pump, a converter and a controller. The electric motor has a rotational output shaft that is rotatable in a first rotational direction and an opposite second rotational direction. The pump has a linearly displaceable input shaft that is movable in a first linear direction and an opposite second linear direction. The converter couples the output shaft to the input shaft such that rotation of the output shaft in the first rotational direction translates the input shaft in the first linear direction, and rotation of the output shaft in the second rotational direction translates the input shaft in the second linear direction. The controller repeatedly reverses rotation of the output shaft to produce reciprocating motion of the input shaft.Type: GrantFiled: September 10, 2012Date of Patent: September 11, 2018Assignee: Graco Minnesota Inc.Inventors: Timothy S. Roman, Greg T. Mrozek
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Publication number: 20170175734Abstract: A reciprocating pump includes a housing, a rod, and a bellows. The housing surrounds a bellows chamber and a displacement chamber. A portion of the rod extends through the opening in the endcap and into the bellows chamber of the housing. A cross-section of the rod includes a lobed shape. The bellows is connected to the housing and to the rod such that the bellows surrounds a portion of the rod.Type: ApplicationFiled: December 16, 2016Publication date: June 22, 2017Inventors: Timothy S. Roman, Andrew J. Klaphake
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Publication number: 20170175728Abstract: A valve for a reciprocating pump includes a housing, a first chamber, a second chamber, a first valve element, and a second valve element. The housing includes an inlet and an outlet. The first and second chambers are within the housing. The first chamber includes a first valve seat and is fluidly connected to the inlet. The second chamber includes a second valve seat and is fluidly connected to the outlet. The first valve element is disposed in the first chamber and includes a spring-loaded check valve element. The second valve element is disposed in the second chamber and includes a buoyant material.Type: ApplicationFiled: December 16, 2016Publication date: June 22, 2017Inventor: Timothy S. Roman
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Publication number: 20170175733Abstract: A reciprocating pump includes a housing, a rod, a bellows, and a bearing. The housing surrounds a bellows chamber and a displacement chamber. A first portion of the rod extends into the bellows chamber. The bellows has a first end connected to the housing and a second end connected to the rod. The bellows surrounds a second portion of the rod. The bellows includes a plurality of convolutions. The bearing is disposed within the bellows between the bellows and the rod.Type: ApplicationFiled: December 16, 2016Publication date: June 22, 2017Inventors: Timothy S. Roman, Andrew J. Klaphake
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Publication number: 20170175727Abstract: A reciprocating pump includes a housing, a rod, a sleeve, a bellows, and a nut. The housing includes a bellows chamber and a working chamber. The rod extends into the reciprocating pump such that the rod extends through the bellows chamber and partly into the working chamber. The rod includes a shoulder. The sleeve is connected to the rod such that the sleeve surrounds a portion of the rod. The bellows is connected to the sleeve such that the bellows surrounds a portion of the sleeve. The nut is attached to a bottom end of the sleeve such that the nut clamps an end of the bellows to the bottom end of the sleeve.Type: ApplicationFiled: December 16, 2016Publication date: June 22, 2017Inventor: Timothy S. Roman
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Patent number: 9464630Abstract: A muffler for a positive displacement pneumatic motor includes a case, an inlet, a diffuser, a pathway, and sound absorbing material. The inlet and the diffuser are attached to the case. The pathway extends between the inlet and the diffuser and allows ice to travel through the muffler. The sound absorbing material is positioned in the pathway and includes more than one duct through which gas passes.Type: GrantFiled: May 18, 2011Date of Patent: October 11, 2016Assignee: Graco Minnesota Inc.Inventors: Timothy S. Roman, Adam K. Collins
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Patent number: 9394900Abstract: In a reciprocating piston pump, piston 34 has first or upper end 48 and second or bottom end 50 having inlet 52 and outlet 54 bores respectively located therein. Inlet check 32 is located in bore 52 while outlet check 42 is located in bore 54. As can be seen in FIG. 3, each of bores 52 and 54 branches into three (in the preferred embodiment) flow paths which alternate and are intertwined. It is the unique flow paths incorporating both the inlet and outlet check valves in the piston that are the key features of the invention.Type: GrantFiled: April 27, 2011Date of Patent: July 19, 2016Inventors: Timothy S. Roman, Kurt R. Sjodin, Adam L. Kalthoff