Patents by Inventor Par Martinsson
Par Martinsson 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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Publication number: 20180116104Abstract: A method of controlling operation of a hand held power tool may include receiving information indicative of a type of cutting equipment attached to the hand held power tool (100) based on operation of a working assembly (130) in a selected direction of rotation. The working assembly (130) may be configured to be bi-directionally rotatable to perform a cutting function using cutting equipment attachable to the hand held power tool (100). The method may further include determining the type of cutting equipment attached based on the received information, and selectively inserting an operational constraint on the working assembly based on the type of cutting equipment and a selected direction of rotation for the working assembly.Type: ApplicationFiled: March 26, 2015Publication date: May 3, 2018Applicant: HUSQVARNA ABInventors: Daniel Alexandersson, Johan Svennung, Ted Wolfram, Stefan Holmberg, Pär Martinsson, Mikael Kågebäck
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Publication number: 20170089349Abstract: A blower may (100) include a power unit and fan assembly powered by the power unit, a stepless trigger (146), control circuitry configured to at least partially control application of power to drive the fan assembly based on a position of the stepless trigger (146), and one or more buttons. The fan assembly may rotate at a speed proportional to the position of the stepless trigger (146) in a first mode of operation. The control circuitry may be configured to enable the operator to actuate a first button (164) of the one or more buttons to shift to a second mode of operation in which speed of the fan assembly is not proportional to the position of the stepless trigger (146) over at least a portion of a range of motion of the stepless trigger (146).Type: ApplicationFiled: May 19, 2014Publication date: March 30, 2017Inventors: Christian Bylund, Pär Martinsson, Pierre Lanquist
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Publication number: 20170051873Abstract: A hand-held power tool (100) may include an electric power source (110), an electric motor (120) selectively coupled to the electric power source (110), a working assembly (130) operably coupled to the electric motor (120) to perform a working function responsive to actuation of the electric motor (120), and a control assembly (140) operably coupled to the electric motor (120) to provide selective control over actuation of the electric motor (120). The control assembly (140) may be configured to provide the selective control based on performance of at least two dissimilar operator actions. The control assembly (140) may include a sensing member (210) and a throttle control member (200). The sensing member (210) may be configured to be operable to an actuated state responsive to an enabling action comprising a first of the two dissimilar operator actions.Type: ApplicationFiled: May 6, 2015Publication date: February 23, 2017Inventors: Pär Martinsson, Mia Herou, Mikael Arvidsson
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Publication number: 20170042096Abstract: A blower (100) may include a housing (110), a blower tube (150), a fan assembly (160) and an eyelet (190). The housing (110) may include a handle portion (144) defining a handle aperture (145). The blower tube (150) may extend forward from the housing (110) and define a tube axis (152). The fan assembly (160) may be operably coupled to the blower tube (150) to force air through the blower tube (150) responsive to operation of a motor (120). The eyelet (190) may be disposed on a side portion of the housing (110) proximate to the handle aperture (145).Type: ApplicationFiled: April 24, 2014Publication date: February 16, 2017Applicant: Husqvarna ABInventors: Christian Bylund, Pär Martinsson, Tobias Nyberg, Pierre Lanquist
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Publication number: 20170045058Abstract: A blower may include a housing, a motor, a fan assembly and an aperture array. The housing may include a handle portion, a top wall and a bottom wall. The fan assembly may be operably coupled to the motor to force air through a blower tube responsive to operation of the motor. The blower tube may define a tube axis. The aperture array may be provided at a portion of the housing to provide a path for air to the fan assembly. The aperture array may be defined by a plurality of vanes disposed at a portion of the housing between the top wall and the bottom wall. The vanes may be angled downward relative to the handle portion.Type: ApplicationFiled: April 24, 2014Publication date: February 16, 2017Inventors: Christian Bylund, Pär Martinsson, Tobias Nyberg
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Publication number: 20170021489Abstract: A method of cooling blower components may include rotating a fan assembly (160) responsive to operation of a motor (120). The rotation of the fan assembly may create an underpressure region in an inlet portion (154) and an overpressure region at a main channel (340) of the fan assembly (160). The method may further include drawing air into the inlet portion (154) through a control unit housing portion (132) of a housing (110) of the blower (100) to cool a control unit (130) of the blower (100), drawing air into the inlet portion (154) through a battery compartment (142) to cool a battery (140) of the blower (100), and pushing air from the main channel (340) through a motor housing (320) to cool the motor (120).Type: ApplicationFiled: March 17, 2014Publication date: January 26, 2017Inventors: Christian Bylund, Tobias Nyberg, Lars Malmqvist, Pär Martinsson, Andreas Levander, Jan Lejon, Fredrik Wibling, Jonas Haglind
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Publication number: 20160302355Abstract: A hand-held cutting device may include a working assembly, a motor and a control assembly. The working assembly may be configured to be rotatable in a first direction and a second direction to perform a first function when rotated in the first direction and a second function, different from the first function, when rotated in the second direction. The motor may be operably coupled to the working assembly to rotate the working assembly. The control assembly may be operably coupled to the motor to enable an operator of the device to select a rotation direction for the working assembly. The working assembly may be configured to perform the first and second functions using a single blade assembly.Type: ApplicationFiled: December 2, 2013Publication date: October 20, 2016Inventor: Pär Martinsson
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Patent number: 9260008Abstract: The invention relates to a closure device (2) for closing a refill opening of a tank such as, a fuel tank or a lubricant tank. The closure device includes a body portion (20) for engagement with the refill opening. The closure device (2) further includes a pivotal member (6) provided with a grip portion (3). The grip portion (3) may be switched between a retracted position and a protruding position. In protruding position, the grip portion (3) extends outwardly of the body portion (20) to form a convenient grip to an operator. A holding member (13, 14, 17) may be provided to hold the pivotal member (6) in the protruding position. The holding member (13, 14, 17) may be secured to the pivotal member (6) and to the body portion (20). The closure device (2) may further comprise a biasing member (11) arranged for urging the pivotal member (6) towards the retracted position.Type: GrantFiled: February 23, 2010Date of Patent: February 16, 2016Assignee: HUSQVARNA ABInventors: Pär Martinsson, Stefan Stark
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Patent number: 9224995Abstract: A battery pack for powering a battery powered tool may include a housing, a plurality of cells and an electrical connection assembly. The housing may include a sidewall assembly configured to correspond to respective sidewalls of a battery compartment defined at a portion of the battery powered tool to facilitate insertion of the battery pack into the battery compartment. The sidewall assembly may form an enclosure around the plurality of cells on all sides substantially parallel to the direction of insertion. The electrical connection assembly may be disposed at a portion of the sidewall assembly to communicate the combined output to a connector disposed at a corresponding sidewall of the battery compartment. The electrical connection assembly may be arranged to engage the connector responsive to movement of the battery pack in a direction substantially parallel to the direction of insertion of the battery pack into the battery compartment.Type: GrantFiled: August 25, 2011Date of Patent: December 29, 2015Assignee: HUSQVARNA ABInventors: Par Martinsson, Johan Bjornlinger, Oskar Bergquist, Mikael Racov, Johan Svennung
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Patent number: 9186737Abstract: A self-powered chainsaw, typically a battery powered chainsaw, including a housing, a power source, an endless cutting chain having a plurality of cutting elements and a motor arranged to drive the chain relative to the housing using power from the power source. The chainsaw also includes a sharpening element which is arranged so as to be driven relative to the cutting elements and the housing using the power source.Type: GrantFiled: February 20, 2010Date of Patent: November 17, 2015Assignee: HUSQVARNA ABInventors: Pär Martinsson, Johan Svennung, Peter Lameli, Ottmar Locher, Christoph Schiedt, Martin Bepler, Hans Waigel
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Patent number: 9138846Abstract: A battery-powered tool includes: a housing, a driven element supported by the housing, an electric motor coupled to the driven element so as to drive the driven element, a battery electrically coupled to the motor so as to supply electric current to the motor and a control circuit arranged to control the supply of electric current to the motor from the battery. The control circuit includes a main switch operable by a user and an auxiliary switch also operable by a user. The control circuit has an active state in which operation of the main switch by the user allows electric current to flow to the motor to cause the driven element to be driven; and an inactive state in which operation of the main switch does not allow electric current to flow to the motor and so the motor does not drive the driven element. Operation of the auxiliary switch causes the control circuit to change between the active and inactive states.Type: GrantFiled: August 8, 2014Date of Patent: September 22, 2015Assignee: HUSQVARNA ABInventors: Johan Svennung, Pär Martinsson, Johan Björnlinger
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Patent number: 9016672Abstract: The present invention concerns a handheld working tool comprising a motor part (10), a handle part (20) comprising a handle grip (21), and at least one first type antivibration element (30) arranged between said motor part (10) and said handle part (20), and which element (30) is adapted to isolate the handle part (20) from vibrations in the motor part (10). The working tool (1) is characterized in that it further comprises at least one second type antivibration element (40) arranged adjacent to the first type antivibration element (30). The at least one second type antivibration element (40) is adapted to, when in an active state, prevent vibrations in the motor part (10) from being transferred to the handle grip (21). The second antivibration element (40) is in the active state when the handle grip (21) is loaded during operation of the working tool (1).Type: GrantFiled: October 23, 2009Date of Patent: April 28, 2015Assignee: Husqvarna ABInventors: Thomas Englund, Pär Martinsson
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Patent number: 8950073Abstract: A chain sharpening device arranged to sharpen a saw chain. The device comprises a housing (110), arranged to be detachably mounted on the guide bar (3), a sharpening element (140) selectively displaceable relative to the housing between a resting state and a sharpening state, an actuator (150), selectively displaceable between an inactivated state and an activated state, which actuator is connected to the sharpening element and arranged to selectively bring the sharpening element from the resting state to the sharpening state, a first biasing member (160) operatively connected to the actuator and arranged to bias the actuator towards its inactivated state, a second biasing member (170), operatively connected to the sharpening element and arranged to enable relative movement between the actuator and the sharpening element when the sharpening element is in the sharpening state, so as to delimit a force with which the sharpening element (140) can be pressed towards the saw chain.Type: GrantFiled: June 23, 2011Date of Patent: February 10, 2015Assignee: Husqvarna ABInventors: Pär Martinsson, Alexander Rashid Gawad, Lucas Lund
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Publication number: 20150027742Abstract: A battery-powered tool includes: a housing, a driven element supported by the housing, an electric motor coupled to the driven element so as to drive the driven element, a battery electrically coupled to the motor so as to supply electric current to the motor and a control circuit arranged to control the supply of electric current to the motor from the battery. The control circuit includes a main switch operable by a user and an auxiliary switch also operable by a user. The control circuit has an active state in which operation of the main switch by the user allows electric current to flow to the motor to cause the driven element to be driven; and an inactive state in which operation of the main switch does not allow electric current to flow to the motor and so the motor does not drive the driven element. Operation of the auxiliary switch causes the control circuit to change between the active and inactive states.Type: ApplicationFiled: August 8, 2014Publication date: January 29, 2015Inventors: Johan Svennung, Pär Martinsson, Johan Björnlinger
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Patent number: 8881408Abstract: A combined fuel tank and handle unit for a motorized, handheld tool includes a substantially closed volume, a handle, and a joint between two parts of the unit. The joint protrudes a distance beyond the surrounding surfaces. At least one rib is disposed at a distance from the joint on the underside of the tool.Type: GrantFiled: December 8, 2010Date of Patent: November 11, 2014Assignee: Husqvarna ABInventors: Pär Martinsson, Stefan Kullberg
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Patent number: 8833485Abstract: A battery-powered portable tool, such as a chainsaw, hedge trimmer or handheld drill, comprising: a housing (1), a driven element (2) supported by the housing (1), an electric motor (6) coupled to the driven element (2) so as to drive the driven element (2), a battery (5) electrically coupled to the motor (6) so as to supply electric current to the motor (6) and a control circuit (8) arranged to control the supply of electric current to the motor (6) from the battery (5), in which the control circuit (8) comprises a main switch (8) operable by a user and an auxiliary switch (10, 11) also operable by a user; in which the control circuit (8) has: an active state in which operation of the main switch (8) by the user allows electric current to flow to the motor (6) so as to cause the driven element (2) to be driven; and an inactive state in which operation of the main switch (8) does not allow electric current to flow to the motor (6) and so the motor (6) does not drive the driven element (2); in which operationType: GrantFiled: April 8, 2009Date of Patent: September 16, 2014Assignee: Husqvarna ABInventors: Johan Svennung, Pär Martinsson, Johan Björnlinger
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Publication number: 20140190713Abstract: A guide and control assembly of a battery driven portable handheld power tool (1) is provided, which guide and control assembly (10) comprises a main handle (20) of the tool, arranged to be gripped by a hand of an operator, in an operating position, so as to permit the operator to carry and guide the power tool (1) with the hand during operational use thereof, a recessed user interaction panel (30) comprising a plurality of user input devices (31, 31?, 31?) and a first status indicating device (32), the user interaction panel (30) being formed in a panel receiving portion (41) of a housing (40) of the power tool (1), wherein the user interaction panel is positioned such that the user input devices (31) are reachable by a thumb of the operator when the hand is in the operating position.Type: ApplicationFiled: August 26, 2011Publication date: July 10, 2014Applicant: HUSQVARNA ABInventors: Pär Martinsson, Oskar Bergquist, Mikael Racov, Johan Svennung, Johan Björnlinger
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Patent number: 8740529Abstract: An arrangement for attaching a bar of a hand-held motor driven tool, such as a chain saw, to a body of the tool includes at least one first engagement device, a cover portion adapted to bear against a bar such that the bar is arranged between the cover portion and the body, and at least one second engagement device is adapted to engage the first engagement device for securing a bar between the cover portion and the body. The second engagement device is arranged to move a first distance along the first engagement device in a direction of the rotation axis of the second engagement device for securing a bar between the cover portion and the body. The second engagement device is captively attached to a spring biasing member having an undistorted position and a distorted position.Type: GrantFiled: April 12, 2010Date of Patent: June 3, 2014Assignee: Husqvarna ABInventors: Par Martinsson, Dag Edlund
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Publication number: 20140123499Abstract: A chain sharpening device arranged to sharpen a saw chain. The device comprises a housing (110), arranged to be detachably mounted on the guide bar (3), a sharpening element (140) selectively displaceable relative to the housing between a resting state and a sharpening state, an actuator (150), selectively displaceable between an inactivated state and an activated state, which actuator is connected to the sharpening element and arranged to selectively bring the sharpening element from the resting state to the sharpening state, a first biasing member (160) operatively connected to the actuator and arranged to bias the actuator towards its inactivated state, a second biasing member (170), operatively connected to the sharpening element and arranged to enable relative movement between the actuator and the sharpening element when the sharpening element is in the sharpening state, so as to delimit a force with which the sharpening element (140) can be pressed towards the saw chain.Type: ApplicationFiled: June 23, 2011Publication date: May 8, 2014Applicant: HUSQVARNA ABInventors: Pär Martinsson, Alexander Rashid Gawad, Lucas Lund
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Publication number: 20140109416Abstract: The invention relates to an arrangement for attaching a bar of a hand-held motor driven tool to a body of the tool, the arrangement including: at least one bolt, having a first part, securely arranged to the body, and a second part extending from the body, the second part having an engagement portion for engaging a nut; a cover portion adapted to bear against a bar such that the bar is arranged between the cover portion and the body; and at least one nut, captively attached to the cover portion. The nut is adapted to engage the engagement portion of the bolt for securing a bar between the cover portion and the body, the nut having a rotation axis. Thereby, an attachment arrangement is achieved that facilitates changing of bars when the nut used in the attachment arrangement is captively arranged to the cover portion.Type: ApplicationFiled: December 30, 2013Publication date: April 24, 2014Applicant: HUSQVARNA ABInventor: Par MARTINSSON