Patents by Inventor Pär Carlsson
Pär Carlsson 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: 12194608Abstract: A hand-held work tool (100) comprising a first part (110) and a second part (120) arranged vibrationally isolated from each other, the first part (110) comprising an interface for holding a circular cutting tool (130) and an electric motor (140) arranged to drive the circular cutting tool, wherein the electric motor (140) is arranged to drive a fan (145) configured to generate a flow of cooling air for cooling the electric motor (140), the second part (120) comprising a battery compartment (150) for holding an electrical storage device arranged to power the electric motor (140), wherein a cooling air conduit is arranged to guide a portion of the flow of cooling air (160) from the first part (110) and into the second part (120) for cooling the electrical storage device.Type: GrantFiled: October 1, 2020Date of Patent: January 14, 2025Assignee: HUSQVARNA ABInventors: Torbjörn Almqvist, Paul Johansson, Hanna Olsson, Robert Lerbro, Pär Carlsson
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Patent number: 11919199Abstract: A cutting and dust or slurry collecting assembly that comprises: a) a circular saw blade (4) b) a blade guard (5) c) a cover device (6), and the cover device (6) has a front end (31), a rear end (32), a top surface (34), a bottom surface (36), elongated sidewalls (35), and a longitudinal passage (45,46) for the saw blade, d) the blade guard (5) and the cover device (6) being pivotally connected or connectable to one another via a hinge (40) in or adjacent to a lower rear corner of the blade guard (5), such that the cover device and the blade guard can be turned in relation to each other, e) a discharge member (52) is provided at the rear of said hinge and has an outlet (58) which can be connected to a vacuum source, f) a connection member (12) connects the discharge member (52) with at least one of the longitudinal passage (45, 46) and the cut created rear of the longitudinal passage, g) that the direction of rotation of the saw blade (4) is such that a circumferential part of the blade which has passed beyonType: GrantFiled: April 26, 2017Date of Patent: March 5, 2024Assignee: HUSQVARNA ABInventors: Pär Carlsson, Håkan Pinzani, Paulo Varella
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Patent number: 11858052Abstract: The present disclosure relates to a drill tool (1), such as a core drill tool (1), comprising a motor unit (2) and a gear unit (3). The motor unit (2) comprises an electric motor (4) and a motor drive shaft (5) that extends along a first longitudinal axis (6) from the electric motor (4) and protrudes out of a motor unit housing (7) via a motor exit aperture (8) in a housing end part (9) and comprises a drive shaft gear (10). The drive shaft gear (10) is adapted to propel a drill shaft (14) that extends along a second longitudinal axis (15) and comprises a tool holder (16) that is adapted to hold a tool. The housing end part (9) comprises a wall part (17) arranged transversally to the longitudinal axes (6, 15) and is adapted to close the gear unit cavity (11) and to separate the electric motor (4) from the gear unit cavity (11).Type: GrantFiled: February 14, 2022Date of Patent: January 2, 2024Assignee: HUSQVARNA ABInventors: Robert Vidlund, Pär Carlsson, Peter Liljenfeldt, David Grennhag
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Publication number: 20220258256Abstract: The present disclosure relates to a drill tool (1), such as a core drill tool (1), comprising a motor unit (2) and a gear unit (3). The motor unit (2) comprises an electric motor (4) and a motor drive shaft (5) that extends along a first longitudinal axis (6) from the electric motor (4) and protrudes out of a motor unit housing (7) via a motor exit aperture (8) in a housing end part (9) and comprises a drive shaft gear (10). The drive shaft gear (10) is adapted to propel a drill shaft (14) that extends along a second longitudinal axis (15) and comprises a tool holder (16) that is adapted to hold a tool. The housing end part (9) comprises a wall part (17) arranged transversally to the longitudinal axes (6, 15) and is adapted to close the gear unit cavity (11) and to separate the electric motor (4) from the gear unit cavity (11).Type: ApplicationFiled: February 14, 2022Publication date: August 18, 2022Inventors: Robert Vidlund, Pär Carlsson, Peter Liljenfeldt, David Grennhag
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Publication number: 20220193879Abstract: A hand-held work tool (100) comprising a first part (110) and a second part (120) arranged vibrationally isolated from each other, the first part (110) comprising an interface for holding a circular cutting tool (130) and an electric motor (140) arranged to drive the circular cutting tool, wherein the electric motor (140) is arranged to drive a fan (145) configured to generate a flow of cooling air for cooling the electric motor (140), the second part (120) comprising a battery compartment (150) for holding an electrical storage device arranged to power the electric motor (140), wherein a cooling air conduit is arranged to guide a portion of the flow of cooling air (160) from the first part (110) and into the second part (120) for cooling the electrical storage device.Type: ApplicationFiled: October 1, 2020Publication date: June 23, 2022Inventors: Torbjörn Almqvist, Paul Johansson, Hanna Olsson, Robert Lerbro, Pär Carlsson
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Publication number: 20220158289Abstract: A battery (1800) for insertion into a battery compartment (150) of a hand-held work tool (100, 200), wherein the battery (1800) has a weight between 3-7 kg, and comprises a groove (1810) arranged on one side of the battery to mate with a corresponding supporting heel (1710) arranged on a wall of a battery compartment (150). The battery further comprises an upper ridge structure (1820) and a lower ridge structure (1830) arranged on an opposite side of the battery compared to the groove (1810), wherein the ridge structures (1820, 1830) are arranged to mate with corresponding dove-tail grooves (1720, 1730) of the battery compartment (150).Type: ApplicationFiled: November 25, 2020Publication date: May 19, 2022Inventors: Torbjörn Almqvist, Pär Carlsson, Robert Lerbro
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Patent number: 11305405Abstract: The present disclosure relates to a cutter clamp (8, 37) that comprises a first arm part (10, 39) and a second arm part (11, 40), where the arm parts (10, 11; 39, 40) are arcuate and arranged to adjustably at least partially enclose a major part of a circumference (57, 63) having a center (58, 64). The cutter clamp (8, 37) comprises at least one hollow rod (21, 22; 48, 62) arranged for receiving a mounting rod (36) for a power cutter (1, 56) in a pivoting manner. The smaller circumference the arm parts (10, 11; 39, 40) are adjusted for, the closer to the center (58, 64) said hollow rod (21, 22; 48, 62) is moved. The present disclosure also relates to a cutter clamp attachment device (68), a cutter clamp kit and a cutter clamp holding frame (76).Type: GrantFiled: May 2, 2018Date of Patent: April 19, 2022Assignee: Husqvarna ABInventors: Torbjörn Almqvist, Robert Lerbro, Pär Carlsson
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Publication number: 20210387272Abstract: A power tool comprising a body (110) arranged to support a rotatable work tool (120), the body comprising a front handle (130) and a rear handle (140), wherein the front handle is arranged between the rotatable work tool and the rear handle, the power tool comprising a liquid dispensing system (151,152, 153, 155) for adding a controlled amount of liquid to the rotatable work tool, the liquid dispensing system comprising a valve (153) for adjusting a flow of liquid in the liquid dispensing system, wherein the valve comprises a control member (154) arranged on the body adjacent to the front handle such that the control member is operable by a hand gripping the front handle.Type: ApplicationFiled: October 21, 2019Publication date: December 16, 2021Inventors: Torbjörn Almqvist, Pär Carlsson
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Publication number: 20200189070Abstract: The present disclosure relates to a cutter clamp (8, 37) that comprises a first arm part (10, 39) and a second arm part (11, 40), where the arm parts (10, 11; 39, 40) are arcuate and arranged to adjustably at least partially enclose a major part of a circumference (57, 63) having a center (58, 64). The cutter clamp (8, 37) comprises at least one hollow rod (21, 22; 48, 62) arranged for receiving a mounting rod (36) for a power cutter (1, 56) in a pivoting manner. The smaller circumference the arm parts (10, 11; 39, 40) are adjusted for, the closer to the center (58, 64) said hollow rod (21, 22; 48, 62) is moved. The present disclosure also relates to a cutter clamp attachment device (68), a cutter clamp kit and a cutter clamp holding frame (76).Type: ApplicationFiled: May 2, 2018Publication date: June 18, 2020Inventors: Torbjörn Almqvist, Robert Lerbro, Pär Carlsson
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Patent number: 10486250Abstract: An electric power saw/cutter includes a rotatable saw structure, a rear handle with a switch/speed control, a front handle, and a drive unit for rotating the saw structure. The drive unit includes a saw structure drive arrangement to which the saw structure is attachable, a transmission for driving the saw drive arrangement, an electric motor for driving an input shaft of the transmission, and a support structure for holding/carrying the saw structure drive arrangement. The transmission and the electric motor may be characterized in that the front handle and the rear handle are directly connected to each other to form a handle unit, which unit is resiliently connected to the drive unit, so that vibrations from the saw blade and drive unit will be reduced in the handle unit.Type: GrantFiled: April 19, 2017Date of Patent: November 26, 2019Assignee: HUSQVARNA ABInventors: Ulf Petersson, Bengt Allan Bergvall, Håkan Pinzani, Pär Carlsson, Adam Vidlund, Johan Berg, Anders Bennehag
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Publication number: 20170225358Abstract: A cutting and dust or slurry collecting assembly that comprises: a) a circular saw blade (4) b) a blade guard (5) c) a cover device (6), and the cover device (6) has a front end (31), a rear end (32), a top surface (34), a bottom surface (36), elongated sidewalls (35), and a longitudinal passage (45,46) for the saw blade, d) the blade guard (5) and the cover device (6) being pivotally connected or connectable to one another via a hinge (40) in or adjacent to a lower rear corner of the blade guard (5), such that the cover device and the blade guard can be turned in relation to each other, e) a discharge member (52) is provided at the rear of said hinge and has an outlet (58) which can be connected to a vacuum source, f) a connection member (12) connects the discharge member (52) with at least one of the longitudinal passage (45, 46) and the cut created rear of the longitudinal passage, g) that the direction of rotation of the saw blade (4) is such that a circumferential part of the blade which has passed beyonType: ApplicationFiled: April 26, 2017Publication date: August 10, 2017Inventors: Pär Carlsson, Håkan Pinzani, Paulo Varella
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Publication number: 20170216941Abstract: An electric power saw/cutter includes a rotatable saw structure, a rear handle with a switch/speed control, a front handle, and a drive unit for rotating the saw structure. The drive unit includes a saw structure drive arrangement to which the saw structure is attachable, a transmission for driving the saw drive arrangement, an electric motor for driving an input shaft of the transmission, and a support structure for holding/carrying the saw structure drive arrangement. The transmission and the electric motor may be characterized in that the front handle and the rear handle are directly connected to each other to form a handle unit, which unit is resiliently connected to the drive unit, so that vibrations from the saw blade and drive unit will be reduced in the handle unit.Type: ApplicationFiled: April 19, 2017Publication date: August 3, 2017Inventors: Ulf Petersson, Bengt Allan Bergvall, Håkan Pinzani, Pär Carlsson, Adam Vidlund, Johan Berg, Anders Bennehag
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Patent number: 9662800Abstract: A cutting and dust or slurry collecting assembly that includes: a circular saw blade, a blade guard, and a cover device. The cover device has a front end, a rear end, a top surface, a bottom surface, elongated sidewalls, and a longitudinal passage for the saw blade. The blade guard and the cover device are pivotally connected or connectable to one another via a hinge in or adjacent to a lower rear corner of the blade guard. A discharge member is provided at the rear of the hinge and has an outlet which can be connected to a vacuum source. A connection member connects the discharge member with the longitudinal passage and the cut created rear of the longitudinal passage.Type: GrantFiled: January 18, 2012Date of Patent: May 30, 2017Assignee: HUSQVARNA ABInventors: Pär Carlsson, Håkan Pinzani, Paulo Varella
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Patent number: 9656336Abstract: An electric power saw/cutter includes a rotatable saw structure, a rear handle with a switch/speed control, a front handle and a drive unit for rotating the saw structure. The drive unit itself including a saw structure drive arrangement to which the saw structure is attachable, a transmission for driving the saw drive arrangement, an electric motor for driving an input shaft of the transmission, and a support structure for holding/carrying the saw structure drive arrangement, the transmission and the electric motor. The front handle and the rear handle are directly connected to each other to form a handle unit, which unit is resiliently connected to the drive unit, so that vibrations from the saw blade and drive unit will be reduced in the handle unit.Type: GrantFiled: June 12, 2013Date of Patent: May 23, 2017Assignee: HUSQVARNA ABInventors: Ulf Petersson, Bengt Allan Bergvall, Håkan Pinzani, Pär Carlsson, Adam Vidlund, Johan Berg, Anders Bennehag
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Publication number: 20150151447Abstract: An electric power saw/cutter (1) comprising: a. a rotatable saw structure (2) b. a rear handle (5) with a switch/speed control (6) c. a front handle (7) d. a drive unit (8) for rotating the saw structure (2), the drive unit (8) itself comprising: e. a saw structure drive arrangement (9) to which the saw structure is attachable f. a transmission (10) for driving the saw drive arrangement (9) g. an electric motor (11) for driving an input shaft (12) of the transmission h. a support structure (13) for holding/carrying the saw structure drive arrangement (9), the transmission (10) and the electric motor (11), characterised in, that the front handle (7) and the rear handle (5) are directly connected to each other to form a handle unit (4), which unit is resiliently connected to the drive unit (8), so that vibrations from the saw blade (2) and drive unit (8) will be reduced in the handle unit (4).Type: ApplicationFiled: June 12, 2013Publication date: June 4, 2015Inventors: Ulf Petersson, Bengt Allan Bergvall, Håkan Pinzani, Pär Carlsson, Adam Vidlund, Johan Berg, Anders Bennehag