Patents by Inventor Luke Wadsley
Luke Wadsley 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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Patent number: 11655816Abstract: A fluid working system such as a pump for displacing a working fluid such as hydraulic fluid or a motor using a working fluid is provided. The system may have a positive displacement machine which includes one or more working chamber with displacement means such as a cylinder with a reciprocating piston. There are also two or more fluid ports to allow the working fluid to flow into and out of the working chamber. The working fluid flows from one fluid port means to another either being forced to do so when pumped or moving the piston when functioning as an engine. The fluid working system has associated therewith a non-dead compliance volume of a material such as syntactic foam. This compliance volume acts to smooth any pressure fluctuations within the working fluid system.Type: GrantFiled: May 8, 2015Date of Patent: May 23, 2023Assignee: Danfoss Power Solutions GmbH & Co. OHGInventors: Elliott Gruber, Luke Wadsley
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Patent number: 11525510Abstract: A piston ring (10) for forming a seal between a piston (26) and piston housing (28). The piston ring (10) has first and second orthogonal axes (12, 14) and a body portion (18) which is resiliently deformable in the direction of the first axis (12) and is substantially rigid in the direction of the second axis (14).Type: GrantFiled: January 12, 2010Date of Patent: December 13, 2022Assignee: Danfoss Power Solutions ApSInventors: Uwe Bernhard Pascal Stein, Luke Wadsley
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Patent number: 11519398Abstract: The invention relates to a method of venting a synthetically commutated hydraulic pump (2). The connecting fluid conduits (8, 16), connecting said synthetically commutated hydraulic pump (2) with a fluid reservoir (7) is vented at least on start-up of the synthetically commutated hydraulic pump (2), using a fluid intake device (14, 17, 20) that connects to a fixed displacement pump (3).Type: GrantFiled: February 11, 2019Date of Patent: December 6, 2022Assignee: Danfoss Power Solutions GmbH & Co. OHGInventors: Alexis Dole, Luke Wadsley
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Patent number: 11499552Abstract: A fluid working system such as a pump for displacing a working fluid such as hydraulic fluid or a motor using a working fluid is provided. The system may have a positive displacement machine which includes one or more working chamber with displacement means such as a cylinder with a reciprocating piston. There are also two or more fluid ports to allow the working fluid to flow into and out of the working chamber. The working fluid flows from one fluid port means to another either being forced to do so when pumped or moving the piston when functioning as an engine. The fluid working system has associated therewith a non-dead compliance volume of a material such as syntactic foam. This compliance volume acts to smooth any pressure fluctuations within the working fluid system.Type: GrantFiled: May 6, 2016Date of Patent: November 15, 2022Assignee: Danfoss Power Solutions GmbH & Co. OHGInventors: Elliott Gruber, Luke Wadsley
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Publication number: 20190249670Abstract: The invention relates to a method of venting a synthetically commutated hydraulic pump (2). The connecting fluid conduits (8, 16), connecting said synthetically commutated hydraulic pump (2) with a fluid reservoir (7) is vented at least on start-up of the synthetically commutated hydraulic pump (2), using a fluid intake device (14, 17, 20) that connects to a fixed displacement pump (3).Type: ApplicationFiled: February 11, 2019Publication date: August 15, 2019Inventors: Alexis Dole, Luke Wadsley
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Patent number: 10183852Abstract: A hydraulic control system that uses system pressure information and a rescaled operator input to command valve spool area to control actuator speed. The system uses soft sealing and/or soft pressure compensation.Type: GrantFiled: June 15, 2016Date of Patent: January 22, 2019Assignee: Danfoss Power Solutions GMBH & CO OHGInventors: Abhijit Das, Lee Mahlum, Luke Wadsley, Richard Hitchcock, Jeffrey A. Sipila, Larry Joachim
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Publication number: 20180135627Abstract: A fluid working system such as a pump for displacing a working fluid such as hydraulic fluid or a motor using a working fluid is provided. The system may have a positive displacement machine which includes one or more working chamber with displacement means such as a cylinder with a reciprocating piston. There are also two or more fluid ports to allow the working fluid to flow into and out of the working chamber. The working fluid flows from one fluid port means to another either being forced to do so when pumped or moving the piston when functioning as an engine. The fluid working system has associated therewith a non-dead compliance volume of a material such as syntactic foam. This compliance volume acts to smooth any pressure fluctuations within the working fluid system.Type: ApplicationFiled: May 6, 2016Publication date: May 17, 2018Inventors: Elliott Gruber, Luke Wadsley
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Patent number: 9739382Abstract: The invention relates to a fluid distribution valve (1, 25, 29, 37, 43), comprising at least a first fluid port (2), a second fluid port (3) and a third fluid port (4). These ports are connecting to a fluid distribution chamber (5). The second fluid port (3) can be selectively connected to the first fluid port (2) and/or the third fluid port (4) through said distribution chamber (5). The second fluid port (3) is arranged between the first fluid port (2) and the third fluid port (4).Type: GrantFiled: November 17, 2009Date of Patent: August 22, 2017Assignees: Danfoss Power Solutions Aps, Artemis Intelligent Power Ltd.Inventors: Stephen Laird, Onno Kuttler, Luke Wadsley
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Publication number: 20170029256Abstract: A hydraulic control system that uses system pressure information and a rescaled operator input to command valve spool area to control actuator speed. The system uses soft sealing and/or soft pressure compensation.Type: ApplicationFiled: June 15, 2016Publication date: February 2, 2017Inventors: Abhijit Das, Lee Mahlum, Luke Wadsley, Richard Hitchcock, Jeffrey A. Sipila, Larry Joachim
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Publication number: 20160327038Abstract: A fluid working system such as a pump for displacing a working fluid such as hydraulic fluid or a motor using a working fluid is provided. The system may have a positive displacement machine which includes one or more working chamber with displacement means such as a cylinder with a reciprocating piston. There are also two or more fluid ports to allow the working fluid to flow into and out of the working chamber. The working fluid flows from one fluid port means to another either being forced to do so when pumped or moving the piston when functioning as an engine. The fluid working system has associated therewith a non-dead compliance volume of a material such as syntactic foam. This compliance volume acts to smooth any pressure fluctuations within the working fluid system.Type: ApplicationFiled: May 8, 2015Publication date: November 10, 2016Inventors: Elliott Gruber, Luke Wadsley
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Patent number: 9410544Abstract: In open-circuit hydraulic systems (1), the cross-sections of the supply lines (6) and input valves of the hydraulic pump (3) have to be large, so that sufficient flow flux can be provided. This hinders a reduction of the size of the pump and the whole hydraulic system. It is suggested that the supply flow (7) of a hydraulic pump (3) is charged by a second, charging pump (2), to a mid-pressure level (7). The cross-sections of the supply flow areas can thus be decreased.Type: GrantFiled: October 24, 2012Date of Patent: August 9, 2016Assignee: Danfoss Power Solutions ApSInventors: Onno Kuttler, Luke Wadsley, Michael D. Gandrud, Pierre Joly
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Patent number: 9188114Abstract: In open-circuit hydraulic systems (1), the cross-sections of the supply lines (6) and input valves of the hydraulic pump (3) have to be large, so that sufficient flow flux can be provided. This hinders a reduction of the size of the pump and the whole hydraulic system. It is suggested that the supply flow (7) of a hydraulic pump (3) is charged by a second, charging pump (2), to a mid-pressure level (7). The cross-sections of the supply flow areas can thus be decreased.Type: GrantFiled: October 30, 2008Date of Patent: November 17, 2015Assignee: Danfoss Power Solutions ApSInventors: Onno Kuttler, Luke Wadsley, Michael D. Gandrud, Pierre Joly
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Patent number: 8668465Abstract: If a hydraulic system has several modes of operation, in particular a mode with a high pressure demand (II) and a mode with a high fluid flow demand (II), the hydraulic fluid pump has to be built with an accordingly high fluid flow output. Such a pump is expensive. Therefore it is suggested, to provide two pumps. I.e. a controllable main pump (2) is provided, which supplies the hydraulic consumer (6) during phases (I) of high pressure demand. During phases (II) of high fluid flow demand, normally, relatively low pressures are sufficient. Therefore, it is suggested to provide a parallel boost pump (9), which supplies the hydraulic consumer (6) in addition to the high pressure pump (2), if a high fluid flow is needed. Excess fluid flow output is avoided by controlling the fluid output flow of main pump 2.Type: GrantFiled: October 29, 2008Date of Patent: March 11, 2014Assignee: Sauer-Danfoss ApsInventors: Luke Wadsley, Niall Caldwell
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Publication number: 20110220230Abstract: The invention relates to a fluid distribution valve (1, 25, 29, 37, 43), comprising at least a first fluid port (2), a second fluid port (3) and a third fluid port (4). These ports are connecting to a fluid distribution chamber (5). The second fluid port (3) can be selectively connected to the first fluid port (2) and/or the third fluid port (4) through said distribution chamber (5). The second fluid port (3) is arranged between the first fluid port (2) and the third fluid port (4).Type: ApplicationFiled: November 17, 2009Publication date: September 15, 2011Applicants: SAUER-DANFOSS APS, ARTEMIS INTELLIGENT POWER LTDInventors: Stephen Laird, Onno Kuttler, Luke Wadsley
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Publication number: 20100322791Abstract: If a hydraulic system has several modes of operation, in particular a mode with a high pressure demand (II) and a mode with a high fluid flow demand (II), the hydraulic fluid pump has to be built with an accordingly high fluid flow output. Such a pump is expensive. Therefore it is suggested, to provide two pumps. I.e. a controllable main pump (2) is provided, which supplies the hydraulic consumer (6) during phases (I) of high pressure demand. During phases (II) of high fluid flow demand, normally, relatively low pressures are sufficient. Therefore, it is suggested to provide a parallel boost pump (9), which supplies the hydraulic consumer (6) in addition to the high pressure pump (2), if a high fluid flow is needed. Excess fluid flow output is avoided by controlling the fluid output flow of main pump 2.Type: ApplicationFiled: October 29, 2008Publication date: December 23, 2010Applicant: Sauer-Danfoss ApSInventors: Luke Wadsley, Niall Caldwell
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Publication number: 20100175551Abstract: A piston ring (10) for forming a seal between a piston (26) and piston housing (28). The piston ring (10) has first and second orthogonal axes (12, 14) and a body portion (18) which is resiliently deformable in the direction of the first axis (12) and is substantially rigid in the direction of the second axis (14).Type: ApplicationFiled: January 12, 2010Publication date: July 15, 2010Applicant: Sauer-Danfoss ApSInventors: Uwe Bernhard Pascal Stein, Luke Wadsley
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Publication number: 20090113888Abstract: In open-circuit hydraulic systems (1), the cross-sections of the supply lines (6) and input valves of the hydraulic pump (3) have to be large, so that sufficient flow flux can be provided. This hinders a reduction of the size of the pump and the whole hydraulic system. It is suggested that the supply flow (7) of a hydraulic pump (3) is charged by a second, charging pump (2), to a mid-pressure level (7). The cross-sections of the supply flow areas can thus be decreased.Type: ApplicationFiled: October 30, 2008Publication date: May 7, 2009Applicant: Sauer-Danfoss ApSInventors: Onno Kuttler, Luke Wadsley, Michael D. Gandrud, Pierre Joly