Patents Assigned to Husqvarna AB
  • Arrangement and method for operating a hydraulic cylinder
    Patent number: 11401958
    Abstract: A carrier comprising a hydraulic cylinder having a piston, a controller and a piston position sensor, wherein the carrier is arranged to carry an accessory through the use of the hydraulic cylinder and wherein the controller is configured to: receive piston position information; determine a direction of movement of the piston; and if the piston position equals a stop distance from an end wall of the hydraulic cylinder in the direction of movement, abort the movement.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: August 2, 2022
    Assignee: HUSQVARNA AB
    Inventor: Tommy Olsson
  • Dust removal arrangement for an engine-driven tool
    Patent number: 11400531
    Abstract: The present disclosure relates to engine-driven tool (1) comprising a rotatable work tool (2) and an engine (4) for propelling a first driving pulley (28) via a clutch wheel (30) comprised in a power transferring unit (27) and having an outer edge. The first driving pulley (28) and the clutch wheel (30) arc arranged to rotate around a common driving axis (38). The power transferring unit (27) comprises an endless drive belt (9) that is arranged propel the rotatable work tool (2) when the first driving pulley (28) is propelled. A fan arrangement (13) is arranged to convey air front a dust channel (11) formed between a shielding cover (8) and the rotatable work tool (2), and comprises a fan turbine (26) that is connected to a fan pulley (29) connected to the drive belt (9) is arranged to propel the fan pulley (29).
    Type: Grant
    Filed: November 23, 2020
    Date of Patent: August 2, 2022
    Assignee: HUSQVARNA AB
    Inventor: Fredrik Karlsson
  • Arrangement and method for operating a hydraulically operated boom carrying a tool
    Patent number: 11401699
    Abstract: A carrier comprising at least one hydraulic cylinder having a piston, a controller and a piston position sensor, wherein the carrier is arranged to carry a tool through the use of the hydraulic cylinder and wherein the controller is configured to: receive control input for moving the tool; receive piston position information for at least one piston of the at least one cylinders; determine a current angle for the tool based on the piston position information; and determine that the current angle approximates a desired angle, and in response thereto halt the tool at the desired angle. According to an aspect the controller may be configured to detect and determine the position of a subject relative the carrier based on hydraulic pressure information and tool operational information. Further, the application concerns methods applied with the embodiments of said carrier.
    Type: Grant
    Filed: November 23, 2020
    Date of Patent: August 2, 2022
    Assignee: HUSQVARNA AB
    Inventor: Tommy Olsson
  • Chainsaw and method
    Patent number: 11400530
    Abstract: Herein a chainsaw (1) is disclosed comprising a guide bar (3) and a chain (5) moveably arranged around the guide bar (3). The chainsaw (1) comprises an motor (9) comprising a motor shaft (11), wherein the motor (9) is configured to drive the chain (5) via the motor shaft (11). The chainsaw (1) further comprises a tension estimation arrangement (13) configured to sense a load on the motor shaft (11), and configured to estimate the tension of the chain (5) around the guide bar (3) on the basis of the sensed load on the motor shaft (11). The present disclosure further relates to a method of estimating tension of a chain (5) of a chainsaw (1).
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: August 2, 2022
    Assignee: HUSQVARNA AB
    Inventors: Robert Walter Schriever, E. Arnold Fie, II, Garrett Sherman, Victor Stramenga
  • Apparatus for determining operator awareness and for initiating precautionary measures on a robotic vehicle
    Patent number: 11385637
    Abstract: An apparatus (e.g., robotic vehicle, control device, headpiece, etc.) including processing circuitry (110) configured to receive robotic-vehicle-positioning-information indicative of robotic vehicle position data of a robotic vehicle (20) transiting a work area at one or more locations on the work area; receive operator-positioning-information indicative of operator position data of an operator controlling the robotic vehicle (20); generate a virtual line-of-sight vector (70) based on the operator-positioning-information; generate a virtual sight area (80) based on the virtual line-of-sight vector (70) and a predetermined sight area parameter; determine if the virtual sight area (80) intersects with the robotic-vehicle-positioning-information; and initiate one or more precautionary measures when the virtual sight area (80) does not intersect with the robotic-vehicle-positioning-information.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: July 12, 2022
    Assignee: HUSQVARNA AB
    Inventors: Rajinder Mehra, Tommy Olsson
  • Conduit coupling apparatus and method
    Patent number: 11384872
    Abstract: A coupling may be configured to receive and secure an insertion end of a conduit. An outer surface of the insertion end of the conduit may be smooth and free of grooves, flanges and beads. A first member of the coupling may define a first passageway. A second member of the coupling may define a second passageway. The first member may be in engagement with the second member. A gripping ring having an inner edge defining a series of teeth may be disposed within the second member. A support ring and O-ring may also be disposed within the second member.
    Type: Grant
    Filed: July 27, 2020
    Date of Patent: July 12, 2022
    Assignee: Husqvarna AB
    Inventors: Kent C. Ericksen, Eric Tres Wangsgaard, Scot W. Hoskisson, Stuart J. Eyring
  • Device for scouting a construction site for construction device deployment
    Patent number: 11367153
    Abstract: A construction site status monitoring device is provided including processing circuitry configured to receive sensor data associated with a construction site from a scout device and generate a site map based on the sensor data for deployment of the construction device.
    Type: Grant
    Filed: March 1, 2017
    Date of Patent: June 21, 2022
    Assignee: HUSQVARNA AB
    Inventor: Tommy Olsson
  • Cutting deck height adjustment system for a riding lawn care vehicle
    Patent number: 11357169
    Abstract: A height adjustment system for adjusting a cutting deck height of a front mounted cutting deck (50) of a riding lawn care vehicle (10) may include a lever (155) operable by an operator seated on the riding lawn care vehicle, and a height adjustment assembly (150) that is alternately assembled and disassembled during attachment and removal of the cutting deck without any operator interaction other than positioning of the lever.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: June 14, 2022
    Assignee: Husqvarna AB
    Inventor: Johan Bengtzohn
  • Collapsible blower extension
    Patent number: 11343980
    Abstract: An example collapsible blower extension for a leaf blower is provided. The collapsible blower extension may include an elongate body forming an internal airflow passageway. The elongate body may be formed of a pliable material causing the internal airflow passageway to be collapsible. The collapsible blower extension may also include an input opening at a proximal end of the elongate body configured to be disposed proximate a leaf blower working assembly airflow outlet and an output opening at a distal end of the elongate body.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: May 31, 2022
    Assignee: HUSQVARNA AB
    Inventors: Jeff Osterchill, Andrew Curtis
  • Reduction of wheel tracks for robotic lawnmower
    Patent number: 11310957
    Abstract: A robotic lawnmower system comprising a robotic lawnmower (100) and a signal generator (240) to which a cable (250, 260) is to be connected, the signal generator (240) being configured to transmit a signal (245) through the cable (250, 260). The robotic lawnmower (100) comprises: a sensor (170) configured to pick up magnetic fields generated by the signal (245) in the cable (250, 260) thereby receiving the signal (245) being transmitted and a controller (110). The controller (110) is configured to follow the cable (250, 260) at a distance by determining a received signal quality level and adapting the distance at which the robotic lawnmower (100) is following the cable at according to the determined signal quality level.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: April 26, 2022
    Assignee: Husqvarna AB
    Inventor: Marcus Liljedahl
  • Cutter clamp, an attachment device, a cutter clamp kit and a holding frame
    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
  • Laying machine
    Patent number: 11280061
    Abstract: The present invention relates to a laying machine for laying at least one flexible casing or tube, cable or wire including: a blade arrangement (2) for making a trench (5) in the ground, a consolidation and laying means (3) being arranged behind the blade arrangement (2), for clearing and safeguarding the trench (5) from collapsing while laying at least one flexible casing or tube, cable or wire into the trench. A blade assembly comprising compartments for cooling fluid.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: March 22, 2022
    Assignee: Husqvarna AB
    Inventors: Lars Gustafsson, Rolf Johansson, Donald Meister
  • Laying machine and a blade assembly
    Patent number: 11280060
    Abstract: The present invention relates to a laying machine for laying at least one flexible casing or tube, cable or wire including: a blade arrangement for making a trench in the ground, a consolidation and laying means being arranged behind the blade arrangement, for clearing and safe-guarding the trench from collapsing while laying at least one flexible casing or tube, cable or wire into the trench. A blade assembly comprising compartments for cooling fluid and air.
    Type: Grant
    Filed: November 12, 2018
    Date of Patent: March 22, 2022
    Assignee: Husqvarna AB
    Inventors: Lars Gustafsson, Rolf Johansson, Fredrik Sjödahl, Tobias Nilsson, Donald F. Meister
  • Power trowel tool attachment
    Patent number: D945495
    Type: Grant
    Filed: February 4, 2020
    Date of Patent: March 8, 2022
    Assignee: Husqvarna AB
    Inventors: Tristan Nijs, Martin Renneson
  • Power grinder
    Patent number: D947908
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: April 5, 2022
    Assignee: Husqvarna AB
    Inventors: Gustav Landberg, Patrik Almqvist, Tor Sigurdsson
  • Power grinder
    Patent number: D947909
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: April 5, 2022
    Assignee: Husqvarna AB
    Inventors: Gustav Landberg, Patrik Almqvist, Tor Sigurdsson
  • Robotic mower
    Patent number: D948580
    Type: Grant
    Filed: August 27, 2020
    Date of Patent: April 12, 2022
    Assignee: Husqvarna AB
    Inventors: Martin Rauch, Alexander Turesson
  • Robotic mower
    Patent number: D956106
    Type: Grant
    Filed: January 20, 2021
    Date of Patent: June 28, 2022
    Assignee: HUSQVARNA AB
    Inventors: Rajinder Mehra, Jon Vestberg
  • Wheel for robotic mower
    Patent number: D958049
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: July 19, 2022
    Assignee: HUSQVARNA AB
    Inventors: Rajinder Mehra, Malin Andersson, Tor Sigurdson
  • Polishing or grinding pad assembly with abrasive disks, reinforcement and pad
    Patent number: D958626
    Type: Grant
    Filed: October 10, 2019
    Date of Patent: July 26, 2022
    Assignee: HUSQVARNA AB
    Inventor: Tchavdar V. Tchakarov