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).

  • Patent number: 12194608
    Abstract: 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: Grant
    Filed: October 1, 2020
    Date of Patent: January 14, 2025
    Assignee: HUSQVARNA AB
    Inventors: Torbjörn Almqvist, Paul Johansson, Hanna Olsson, Robert Lerbro, Pär Carlsson
  • Patent number: 11919199
    Abstract: 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 beyon
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: March 5, 2024
    Assignee: HUSQVARNA AB
    Inventors: Pär Carlsson, Håkan Pinzani, Paulo Varella
  • Patent number: 11858052
    Abstract: 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: Grant
    Filed: February 14, 2022
    Date of Patent: January 2, 2024
    Assignee: HUSQVARNA AB
    Inventors: Robert Vidlund, Pär Carlsson, Peter Liljenfeldt, David Grennhag
  • Publication number: 20220258256
    Abstract: 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: Application
    Filed: February 14, 2022
    Publication date: August 18, 2022
    Inventors: Robert Vidlund, Pär Carlsson, Peter Liljenfeldt, David Grennhag
  • Publication number: 20220193879
    Abstract: 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: Application
    Filed: October 1, 2020
    Publication date: June 23, 2022
    Inventors: Torbjörn Almqvist, Paul Johansson, Hanna Olsson, Robert Lerbro, Pär Carlsson
  • Publication number: 20220158289
    Abstract: 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: Application
    Filed: November 25, 2020
    Publication date: May 19, 2022
    Inventors: Torbjörn Almqvist, Pär Carlsson, Robert Lerbro
  • Patent number: 11305405
    Abstract: 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: Grant
    Filed: May 2, 2018
    Date of Patent: April 19, 2022
    Assignee: Husqvarna AB
    Inventors: Torbjörn Almqvist, Robert Lerbro, Pär Carlsson
  • Publication number: 20210387272
    Abstract: 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: Application
    Filed: October 21, 2019
    Publication date: December 16, 2021
    Inventors: Torbjörn Almqvist, Pär Carlsson
  • Publication number: 20200189070
    Abstract: 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: Application
    Filed: May 2, 2018
    Publication date: June 18, 2020
    Inventors: Torbjörn Almqvist, Robert Lerbro, Pär Carlsson
  • Patent number: 10486250
    Abstract: 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: Grant
    Filed: April 19, 2017
    Date of Patent: November 26, 2019
    Assignee: HUSQVARNA AB
    Inventors: Ulf Petersson, Bengt Allan Bergvall, Håkan Pinzani, Pär Carlsson, Adam Vidlund, Johan Berg, Anders Bennehag
  • Publication number: 20170225358
    Abstract: 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 beyon
    Type: Application
    Filed: April 26, 2017
    Publication date: August 10, 2017
    Inventors: Pär Carlsson, Håkan Pinzani, Paulo Varella
  • Publication number: 20170216941
    Abstract: 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: Application
    Filed: April 19, 2017
    Publication date: August 3, 2017
    Inventors: Ulf Petersson, Bengt Allan Bergvall, Håkan Pinzani, Pär Carlsson, Adam Vidlund, Johan Berg, Anders Bennehag
  • Patent number: 9662800
    Abstract: 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: Grant
    Filed: January 18, 2012
    Date of Patent: May 30, 2017
    Assignee: HUSQVARNA AB
    Inventors: Pär Carlsson, Håkan Pinzani, Paulo Varella
  • Patent number: 9656336
    Abstract: 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: Grant
    Filed: June 12, 2013
    Date of Patent: May 23, 2017
    Assignee: HUSQVARNA AB
    Inventors: Ulf Petersson, Bengt Allan Bergvall, Håkan Pinzani, Pär Carlsson, Adam Vidlund, Johan Berg, Anders Bennehag
  • Publication number: 20150151447
    Abstract: 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: Application
    Filed: June 12, 2013
    Publication date: June 4, 2015
    Inventors: Ulf Petersson, Bengt Allan Bergvall, Håkan Pinzani, Pär Carlsson, Adam Vidlund, Johan Berg, Anders Bennehag