Patents by Inventor Kurt Harck
Kurt Harck 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: 11680658Abstract: A linear actuator (1) comprising a first part (3) and a second part (5) is disclosed. The first part (3) is arranged to rotate along with a rotating part (4) of a motor (2), and the second part (5) is arranged to drive an actuated part (18, 22). A coupling (6) interconnects the first part (3) and the second part (5) to allow the second part (5) to rotate along with the first part (3) at the same angular velocity as the first part (3). The coupling (6) defines a fit tolerance between the first part (3) and the second part (5) allowing the first part (3) to rotate a predefined distance before engaging the second part (5) and rotating the second part (5) along with the first part (3). The fit tolerance ensures that the first part (3) reaches a certain angular velocity and thereby that the resulting torque transfer from the first part (3) to the second part (5) is sufficient, e.g. to release the actuated part (18, 22) from a pre-tensioned state.Type: GrantFiled: December 6, 2016Date of Patent: June 20, 2023Assignee: Danfoss A/SInventors: Kurt Harck, Hongmei Deng, Birthe Nissen Reese, Jens Pawlik, Sigurd Larsen, Detlef Matzen
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Publication number: 20220042729Abstract: Electric expansion valve (1) including a valve housing (12), a valve seat (2), a valve element (3) cooperating with the valve seat (2), a drive driving the valve element (3) and including a rotary motor (4) having an axis (17) of rotation. The valve element (3) is connected to the motor (4) and has a possibility of radial displacement between the rotor (6) and the valve element (3) with respect to the axis (17) of rotation. Such an expansion valve should ensure a long lifetime with low production costs. To this end the valve element (3) is connected to the motor (4) by means of a fixing element (16) which guarantees a defined position of the valve element (3) in axial direction while allowing the radial displacement between the axis (17) of rotation and the valve element (3).Type: ApplicationFiled: December 16, 2019Publication date: February 10, 2022Inventors: Sigurd Larsen, Kurt Harck, Søren Støttrup Kristensen, Birthe Nissen Reese, Charlotte Vibeke Pingel Vagnsholdt
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Patent number: 10814426Abstract: A method for attaching an object, such as a sight glass (3) or an electrical connector (4), to a structure, such as a valve housing (1), the object (3, 4) comprising an annular flange (6, 11). The object (3, 4) is mounted in an opening (7, 12) of the structure (1) with the annular flange (6, 11) in abutment with an annular edge (8, 13) of the opening (7, 12). The object (3, 4) is attached to the structure (1) by performing welding of the annular edge (8, 13) and the annular flange (6, 11) and displacing the welding beam along the annular flange (6, 11).Type: GrantFiled: September 19, 2014Date of Patent: October 27, 2020Assignee: Danfoss A/SInventors: Kurt Harck, Sigurd Larsen
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Patent number: 10344884Abstract: A valve (1) comprising a first housing part (2) and a second housing part (3), the first housing part (2) and the second housing part (3) being made from a sheet metal material, and being joined by means of welding, preferably laser welding, to form a closed housing of the valve (1). An actuator (9) is arranged inside the housing for driving movements of a first valve member (7) and/or a second valve member (8), said actuator (9) being arranged directly in a flow of fluid flowing in the fluid flow path during operation of the valve (1). The valve (1) is hermetically sealed due to the welding of the housing parts (2, 3).Type: GrantFiled: August 19, 2015Date of Patent: July 9, 2019Assignee: Danfoss A/SInventors: Kurt Harck, Jens Pawlik, Sigurd Larsen
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Publication number: 20180363797Abstract: A linear actuator (1) comprising a first part (3) and a second part (5) is disclosed. The first part (3) is arranged to rotate along with a rotating part (4) of a motor (2), and the second part (5) is arranged to drive an actuated part (18, 22). A coupling (6) interconnects the first part (3) and the second part (5) to allow the second part (5) to rotate along with the first part (3) at the same angular velocity as the first part (3). The coupling (6) defines a fit tolerance between the first part (3) and the second part (5) allowing the first part (3) to rotate a predefined distance before engaging the second part (5) and rotating the second part (5) along with the first part (3). The fit tolerance ensures that the first part (3) reaches a certain angular velocity and thereby that the resulting torque transfer from the first part (3) to the second part (5) is sufficient, e.g. to release the actuated part (18, 22) from a pre-tensioned state.Type: ApplicationFiled: December 6, 2016Publication date: December 20, 2018Inventors: Kurt Harck, Hongmei Deng, Birthe Nissen Reese, Jens Pawlik, Sigurd Larsen, Detlef Matzen
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Publication number: 20170167624Abstract: A valve (1) comprising a first housing part (2) and a second housing part (3), the first housing part (2) and the second housing part (3) being made from a sheet metal material, and being joined by means of welding, preferably laser welding, to form a closed housing of the valve (1). An actuator (9) is arranged inside the housing for driving movements of a first valve member (7) and/or a second valve member (8), said actuator (9) being arranged directly in a flow of fluid flowing in the fluid flow path during operation of the valve (1). The valve (1) is hermetically sealed due to the welding of the housing parts (2, 3).Type: ApplicationFiled: August 19, 2015Publication date: June 15, 2017Inventors: Kurt Harck, Jens Pawlik, Sigurd Larsen
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Publication number: 20160214210Abstract: A method for attaching an object, such as a sight glass (3) or an electrical connector (4), to a structure, such as a valve housing (1), the object (3, 4) comprising an annular flange (6, 11). The object (3, 4) is mounted in an opening (7, 12) of the structure (1) with the annular flange (6, 11) in abutment with an annular edge (8, 13) of the opening (7, 12). The object (3, 4) is attached to the structure (1) by performing welding of the annular edge (8, 13) and the annular flange (6, 11) and displacing the welding beam along the annular flange (6, 11).Type: ApplicationFiled: September 19, 2014Publication date: July 28, 2016Applicant: DANFOSS A/SInventors: Kurt Harck, Sigurd Larsen
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Patent number: 9334967Abstract: The invention relates to an axial valve comprising an actuator (15) and a center tube (19). The actuator comprises a stationary element (16) and a closing element (17), and the center tube (19) is placed axially in relation to an axial extension of the stationary element (16). The center tube (19) is in a fixed position relative to the stationary element (16). Fluid, such as refrigerant, is intended for flowing through the valve and through the center tube. The center tube (19) comprises orifices (22) for fluid passage. The closing element (17) is placed axially to an axial extension of the center tube (19) and is movable axially along the center tube between a first position, where the closing element closes the orifices (22) of the center tube, thereby not allowing fluid to pass the orifices, and a second position, where the orifices (22) are open, thereby allowing fluid to pass the orifices.Type: GrantFiled: April 16, 2013Date of Patent: May 10, 2016Assignee: Danfoss A/SInventors: Sigurd Larsen, Kurt Harck
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Publication number: 20160061498Abstract: The invention relates to a valve (10) comprising a casing (11, 12) and an actuator (15). The valve comprises a center element (21, 38) placed parallel with or in extension of a longitudinal extension of the valve, and a closing element (18, 20, 35) being placed along or in extension of the longitudinal extension of the center tube (21). The closing element is movable along the longitudinal extension of the valve and in relation to the center element between a first position, where the closing element closes one or more orifices (24, 39), thereby not allowing fluid to pass the orifices, and a second position, where the one or more orifices are open, thus allowing fluid to pass the orifices. The Invention also relates to a method of assembling the valve, to a stationary element for a valve and to a vapor compression system, preferably a refrigeration system, being provided with the valve.Type: ApplicationFiled: October 25, 2013Publication date: March 3, 2016Inventors: Sigurd Larsen, Kurt Harck
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Publication number: 20150069279Abstract: The invention relates to an axial valve comprising an actuator (15) and a center tube (19). The actuator comprises a stationary element (16) and a closing element (17), and the center tube (19) is placed axially in relation to an axial extension of the stationary element (16). The center tube (19) is in a fixed position relative to the stationary element (16). Fluid, such as refrigerant, is intended for flowing through the valve and through the center tube. The center tube (19) comprises orifices (22) for fluid passage. The closing element (17) is placed axially to an axial extension of the center tube (19) and is movable axially along the center tube between a first position, where the closing element closes the orifices (22) of the center tube, thereby not allowing fluid to pass the orifices, and a second position, where the orifices (22) are open, thereby allowing fluid to pass the orifices.Type: ApplicationFiled: April 16, 2013Publication date: March 12, 2015Inventors: Sigurd Larsen, Kurt Harck
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Patent number: D742265Type: GrantFiled: March 26, 2014Date of Patent: November 3, 2015Assignee: Danfoss A/SInventors: Kurt Harck, Sigurd Larsen
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Patent number: D756929Type: GrantFiled: March 26, 2014Date of Patent: May 24, 2016Assignee: Danfoss A/SInventors: Kurt Harck, Sigurd Larsen
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Patent number: D758228Type: GrantFiled: June 1, 2015Date of Patent: June 7, 2016Assignee: Danfoss A/SInventors: Kurt Harck, Sigurd Larsen
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Patent number: D768822Type: GrantFiled: April 23, 2014Date of Patent: October 11, 2016Assignee: DANFOSS A/SInventors: Kurt Harck, Sigurd Larsen
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Patent number: D768823Type: GrantFiled: April 23, 2014Date of Patent: October 11, 2016Assignee: DANFOSS A/SInventors: Kurt Harck, Sigurd Larsen
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Patent number: D812190Type: GrantFiled: July 7, 2016Date of Patent: March 6, 2018Assignee: DANFOSS A/SInventors: Kurt Harck, Sigurd Larsen
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Patent number: D812191Type: GrantFiled: July 7, 2016Date of Patent: March 6, 2018Assignee: DANFOSS A/SInventors: Kurt Harck, Sigurd Larsen
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Patent number: D813351Type: GrantFiled: July 7, 2016Date of Patent: March 20, 2018Assignee: DANFOSS A/SInventors: Kurt Harck, Sigurd Larsen
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Patent number: D1005450Type: GrantFiled: May 23, 2023Date of Patent: November 21, 2023Assignee: Danfoss A/SInventors: Kurt Harck, Sigurd Larsen, Birthe Nissen Reese, Charlotte Vibeke Pingel Vagnsholdt
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Patent number: D1028175Type: GrantFiled: December 24, 2019Date of Patent: May 21, 2024Assignee: DANFOSS A/SInventors: Kurt Harck, Sigurd Larsen, Birthe Nissen Reese, Charlotte Vibeke Pingel Vagnsholdt