Patents by Inventor Leif A. Hansen
Leif A. Hansen 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: 11512718Abstract: A hydraulic pressure amplifier arrangement (1) comprising a supply port (IN), a return port (R), a high pressure port (H1), and a pressure amplifier unit (2) having a low pressure inlet (3) connected to the supply port (IN) and a high pressure outlet (4) connected to the high pressure port (H1) is described, wherein the pressure amplifier unit (2) comprises an amplification factor. In such a hydraulic pressure amplifier arrangement it should be possible to allow simply releasing off pressure at the high pressure port while keeping small unnecessary energy consumption. To this end a control valve (8) is arranged in a connection between the high pressure port (H1) and the return port (R).Type: GrantFiled: January 29, 2021Date of Patent: November 29, 2022Assignee: miniBOOSTER Hydraulics A/SInventors: Christen Espersen, Peter Leonhard Wasmer, Thyge Bollmann, Peter J. Mads Clausen, Jan Petersen, Leif Hansen, Jimmy Thomsen, Andreas Wollesen
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Publication number: 20210239138Abstract: A hydraulic pressure amplifier arrangement (1) comprising a supply port (IN), a return port (R), a high pressure port (H1), and a pressure amplifier unit (2) having a low pressure inlet (3) connected to the supply port (IN) and a high pressure outlet (4) connected to the high pressure port (H1) is described, wherein the pressure amplifier unit (2) comprises an amplification factor. In such a hydraulic pressure amplifier arrangement it should be possible to allow simply releasing off pressure at the high pressure port while keeping small unnecessary energy consumption. To this end a control valve (8) is arranged in a connection between the high pressure port (H1) and the return port (R).Type: ApplicationFiled: January 29, 2021Publication date: August 5, 2021Inventors: Christen Espersen, Peter Leonhard Wasmer, Thyge Bollmann, Peter J. Mads Clausen, Jan Petersen, Leif Hansen, Jimmy Thomsen, Andreas Wollesen
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Patent number: 10337535Abstract: A hydraulic system (1) is provided comprising a pressure source (2), an output (3), and a pressure booster (6) arranged between the pressure source (2) and the output (3). The operational possibilities of such a system should be extended. To this end inactivating means are provided inactivating or activating said pressure booster.Type: GrantFiled: March 21, 2014Date of Patent: July 2, 2019Assignee: MiniBooster Hydraulics A/SInventors: Jan Maiboll Buhl, Jorgen Mads Clausen, Christen Espersen, Leif Hansen, Jacob Madsen, Brian Petersen, Svend Erik Thomsen, Jorgen P. Todsen
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Patent number: 9562544Abstract: A hydraulic system (1) is provided comprising a supply port arrangement (P, T), a working port arrangement (A, B), and a booster section (7), said supply port arrangement having at least a supply port (P), said booster section (7) being arranged between said supply port arrangement (P, T) and said working port arrangement (A, B). The operational possibilities of such a hydraulic system should be extended. To this end said working port arrangement comprises at least two working ports (A, B), flow direction changing means (9) are provided changing a flow direction through said working port arrangement and inactivating means (16) are provided inactivating or activating said booster section (7) for each flow direction.Type: GrantFiled: August 19, 2014Date of Patent: February 7, 2017Assignee: miniBOOSTER HYDRAULICS A/SInventors: Joergen Mads Clausen, Christen Espersen, Leif Hansen, Brian Petersen, Joergen P. Todsen, Poul Ennemark, Knud Meldgaard Jensen, Tom Tychsen
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Patent number: 9205457Abstract: The invention relates to a method of working the surface of an edge or pattern on a work piece made, at least partly, of a wooden material. The method comprising a primary production step of processing the work piece by shaping said edge or pattern on the work piece. The primary production step further comprises applying a coating of phenylpropanoid polymer to said shaped edge or pattern, said coating being a surplus to any phenylpropanoid polymer present in the wooden material before applying the coating, and heating and mechanically working said edge or pattern, resulting in respectively the coating of phenylpropanoid polymer hardening during polymerization and a finished surface of said edge or pattern on the work piece.Type: GrantFiled: September 15, 2011Date of Patent: December 8, 2015Assignee: TOOLING INVEST A/SInventor: Leif Hansen
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Publication number: 20150052888Abstract: A hydraulic system (1) is provided comprising a supply port arrangement (P, T), a working port arrangement (A, B), and a booster section (7), said supply port arrangement having at least a supply port (P), said booster section (7) being arranged between said supply port arrangement (P, T) and said working port arrangement (A, B). The operational possibilities of such a hydraulic system should be extended. To this end said working port arrangement comprises at least two working ports (A, B), flow direction changing means (9) are provided changing a flow direction through said working port arrangement and inactivating means (16) are provided inactivating or activating said booster section (7) for each flow direction.Type: ApplicationFiled: August 19, 2014Publication date: February 26, 2015Inventors: Joergen Mads Clausen, Christen Espersen, Leif Hansen, Brian Petersen, Joergen P. Todsen, Poul Ennemark, Knud Meldgaard Jensen, Tom Tychsen
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Publication number: 20140283512Abstract: A hydraulic system (1) is provided comprising a pressure source (2), an output (3), and a pressure booster (6) arranged between the pressure source (2) and the output (3). The operational possibilities of such a system should be extended. To this end inactivating means are provided inactivating or activating said pressure booster.Type: ApplicationFiled: March 21, 2014Publication date: September 25, 2014Inventors: Jan Maiboll Buhl, Jorgen Mads Clausen, Christen Espersen, Leif Hansen, Jacob Madsen, Brian Petersen, Svend Erik Thomsen, Jorgen P. Todsen
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Publication number: 20130189487Abstract: The invention relates to a method of working the surface of an edge or pattern on a work piece made, at least partly, of a wooden material. The method comprising a primary production step of processing the work piece by shaping said edge or pattern on the work piece. The primary production step further comprises applying a coating of phenylpropanoid polymer to said shaped edge or pattern, said coating being a surplus to any phenylpropanoid polymer present in the wooden material before applying the coating, and heating and mechanically working said edge or pattern, resulting in respectively the coating of phenylpropanoid polymer hardening during polymerization and a finished surface of said edge or pattern on the work piece.Type: ApplicationFiled: September 15, 2011Publication date: July 25, 2013Applicant: TOOLING INVEST A/SInventor: Leif Hansen
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Patent number: 7726950Abstract: A fluid supply unit includes a hydraulic supply unit and a pressure generator for the fluid and a pressure outlet. A pressure booster is installed between the pressure generator and the pressure outlet and is rigidly mechanically connected with the pressure generator, wherein the pressure booster (6) is driven by a portion of the fluid generated by the pump.Type: GrantFiled: October 9, 2003Date of Patent: June 1, 2010Assignee: miniBooster Hydraulics A/SInventors: Leif Hansen, Peter J. M. Clausen, Christen Espersen
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Patent number: 7686596Abstract: A hydraulic pressure amplifier with a housing which has an end face at a low pressure side and an end face at a high pressure side and a circumferential wall between the two end faces, wherein an outlet valve is arranged adjacent the end face on the high pressure side, and an outlet duct for the hydraulic liquid which is under high pressure. In a pressure amplifier of the above-described type, the outlet duct opens into the circumferential wall or extends through a connection plug which is screwed into the end face on the high pressure side and closes off an assembly duct which receives the outlet valve.Type: GrantFiled: May 31, 2007Date of Patent: March 30, 2010Assignee: miniBOOSTER HYDRAULICS A/SInventors: Peter J. M. Clausen, Leif Hansen, Thyge Bollmann, Christen Espersen
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Publication number: 20080008601Abstract: A hydraulic pressure amplifier with a housing which has an end face at a low pressure side and an end face at a high pressure side and a circumferential wall between the two end faces, wherein an outlet valve is arranged adjacent the end face on the high pressure side, and an outlet duct for the hydraulic liquid which is under high pressure. In a pressure amplifier of the above-described type, the outlet duct opens into the circumferential wall or extends through a connection plug which is screwed into the end face on the high pressure side and closes off an assembly duct which receives the outlet valve.Type: ApplicationFiled: May 31, 2007Publication date: January 10, 2008Inventors: Peter J. M. Chausen, Leif Hansen, Thyge Bollmann, Christen Espersen
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Patent number: 7204087Abstract: A hydraulic tool has a motor, a valve, a hydraulic intensifier, and a supply connector. The hydraulic intensifier is arranged between the valve and the motor. The valve and the motor are arranged behind one another in a longitudinal direction of the tool. The hydraulic intensifier has at least one intensifier piston having a movement direction that is positioned at a first angle greater than 0° relative to the longitudinal direction of the tool.Type: GrantFiled: February 11, 2005Date of Patent: April 17, 2007Assignee: miniBooster Hydraulics A/SInventors: Leif Hansen, Christen Espersen, Thyge Bollmann, Peter J. M. Clausen
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Publication number: 20050265859Abstract: A fluid supply unit (1), in particular a hydraulic supply unit is disclosed, comprising a pressure generator (2) for the fluid, in particular a pump or hydraulic fluids and a pressure outlet (7). The aim of the invention is to broaden the application possibilites of such a unit. Said aim is achieved, whereby a pressure amplifier (6) is arranged between the pressure generator (2) and the pressure outlet (7) which is mechanically fixed to the pressure generator (2).Type: ApplicationFiled: October 9, 2003Publication date: December 1, 2005Inventors: Leif Hansen, Peter Clausen, Christen Espersen
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Publication number: 20050178121Abstract: A hydraulic tool has a motor, a valve, a hydraulic intensifier and a supply connector. The hydraulic intensifier is arranged between the valve and the motor. The valve and the motor are arranged behind one another in a longitudinal direction of the tool. The hydraulic intensifier has at least one intensifier piston having a movement direction that is positioned at a first angle greater than 0° relative to the longitudinal direction of the tool.Type: ApplicationFiled: February 11, 2005Publication date: August 18, 2005Inventors: Leif Hansen, Christen Espersen, Thyge Bollmann, Peter Clausen
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Patent number: 6866485Abstract: A double-acting hydraulic pressure intensifier includes a supply connection, a return connection, a high-pressure connection. An intensifier piston assembly includes a low-pressure piston arranged in a low-pressure cylinder and two high-pressure pistons connected to the low-pressure piston each arranged in a high-pressure cylinder. A switching valve assembly includes a displace able, hydraulically controlled valve element which on its two opposite sides in the direction of displacement has control pressure chambers with pressure application areas of different sizes, namely, a first control pressure chamber with a smaller pressure application area and a second control pressure chamber with a larger pressure application area. A stop plug is arranged between the second control pressure chamber and the supply connection.Type: GrantFiled: November 26, 2002Date of Patent: March 15, 2005Assignee: miniBOOSTER HYDRAULICS A/SInventors: Leif Hansen, Peter J. M. Clausen, Christen Esperson, Jan Petersen
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Patent number: 6776080Abstract: A hydraulic pressure intensifier includes a supply connection, a return connection, and a high-pressure connection. An intensifier piston assembly includes a high-pressure cylinder with a high-pressure piston displaceable therein and a low-pressure cylinder having a greater cross-section than the high-pressure cylinder, with a low-pressure piston which is displaceable therein. The low-pressure piston is connected to the high-pressure piston and divides the low-pressure cylinder into a first low-pressure chamber on the side of the high-pressure piston and a second low-pressure chamber. A switching valve acts on the second low-pressure chamber with pressure from a pressure source or relieves it of pressure.Type: GrantFiled: November 26, 2002Date of Patent: August 17, 2004Assignee: miniBooster Hydraulics A/SInventors: Leif Hansen, Peter J. M. Clausen, Christen Esperson, Jan Petersen
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Publication number: 20030099556Abstract: A double-acting hydraulic pressure intensifier includes a supply connection, a return connection, a high-pressure connection. An intensifier piston assembly includes a low-pressure piston arranged in a low-pressure cylinder and two high-pressure pistons connected to the low-pressure piston each arranged in a high-pressure cylinder. A switching valve assembly includes a displace able, hydraulically controlled valve element which on its two opposite sides in the direction of displacement has control pressure chambers with pressure application areas of different sizes, namely, a first control pressure chamber with a smaller pressure application area and a second control pressure chamber with a larger pressure application area. A stop plug is arranged between the second control pressure chamber and the supply connection.Type: ApplicationFiled: November 26, 2002Publication date: May 29, 2003Applicant: miniBOOSTER HYDRAULICS A/SInventors: Leif Hansen, Peter J.M. Clausen, Christen Esperson, Jan Petersen
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Publication number: 20030097924Abstract: A hydraulic pressure intensifier includes a supply connection, a return connection, and a high-pressure connection. An intensifier piston assembly includes a high-pressure cylinder with a high-pressure piston displaceable therein and a low-pressure cylinder having a greater cross-section than the high-pressure cylinder, with a low-pressure piston which is displaceable therein. The low-pressure piston is connected to the high-pressure piston and divides the low-pressure cylinder into a first low-pressure chamber on the side of the high-pressure piston and a second low-pressure chamber. A switching valve acts on the second low-pressure chamber with pressure from a pressure source or relieves it of pressure.Type: ApplicationFiled: November 26, 2002Publication date: May 29, 2003Applicant: miniBOOSTER HYDRAULICS A/SInventors: Leif Hansen, Peter J.M. Clausen, Christen Esperson, Jan Petersen
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Patent number: 4012072Abstract: A cover for a bicycle seat which flexes with movements of the bicycle rider's legs to reduce or eliminate relative movement between the cover and the leg. The cover includes recess means adapted to accept a plurality of different padding inserts to produce a composite seat of any desired firmness and flexibility. The cover has a plurality of substantially longitudinally disposed grooves and raised portions which serve the dual functions of increasing air circulation between the seat cover and body of the rider and of providing an accordian-like movement with the up and down movements of the rider's legs to substantially reduce or eliminate relative movement between the seat cover and the legs of the rider.Type: GrantFiled: January 19, 1976Date of Patent: March 15, 1977Inventor: Leif A. Hansen