Patents Assigned to Husqvarna AB
  • Patent number: 11648500
    Abstract: The present disclosure provides a valve (123), comprising a channel body (1231) defining a bent channel space, an elastically flexible membrane (1233), which separates a control space (Sc) from a flow space (Sf) in the channel space, a control connection (1232), providing a fluid connection to the control space (Sc), The control space (Sc) is provided at a radially outermost portion (Co) of the channel space, as per a channel bending radius (Ro), such that the membrane (1233) is flexible between an open position, whereby a cross section of the flow space (Sf) is substantially that of the channel, and a closed position, whereby the membrane substantially seals against a radially innermost portion (Ci) of the channel, as per the channel bending radius (Ri). Use of the valve in a separator is disclosed, as well as a separator comprising such valve and a method of cleaning a separator body.
    Type: Grant
    Filed: May 2, 2018
    Date of Patent: May 16, 2023
    Assignee: HUSQVARNA AB
    Inventor: Andreas Fogelberg
  • Patent number: 11639592
    Abstract: A spacer structure (204; 205) for a saw disc assembly of a sawing machine (4), comprises a hub device (220) having a central axis and being adapted to be coaxially arranged between a pair of axially peripheral saw discs. According to the invention, said hub device (220) is configured and adapted to detachably or non-detachably receive a proximal portion (231) of an elongated spacer means (230) in a substantially radial manner in relation to said hub device, said elongated spacer means (230) being adapted to be arranged between said pair of saw discs, a distal portion (235) of said elongated spacer means (230) being constituted and adapted to detachably or non-detachably connect to said pair of peripheral saw discs.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: May 2, 2023
    Assignee: HUSQVARNA AB
    Inventors: Tobias Nilsson, Fredrik Sjödahl
  • Patent number: 11633303
    Abstract: An acoustic earmuff device comprising a pair of earmuff cup assemblies such that each is configured to be arranged at a location proximate to an ear of an user, wherein each earmuff cup assembly comprises means (320) for adapting a pressure applied to the location proximate to the ear so that the pressure around the ear is evenly distributed and a even seal is achieved, wherein the means for adapting a pressure comprises an adaptive layer (324) that is configured to apply the pressure around the ear evenly regardless whether that location comprises any protruding element (2).
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: April 25, 2023
    Assignee: HUSQVARNA AB
    Inventors: Alexander Persson, Cornelia Gustafsson
  • Patent number: 11633831
    Abstract: The present disclosure relates to a grinding head for a floor grinding machine for grinding floor surfaces of stone or stone-like material. Such a grinding head comprises a lower casing member, comprising a lower support and an upwardly extending edge portion, and an upper casing member, comprising an upper cover and a downwardly extending edge portion, wherein the upper casing member is joinable to the lower casing member by causing axially distal portions of the edge portions to bear on each other.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: April 25, 2023
    Assignee: HUSQVARNA AB
    Inventors: Andreas Fogelberg, Daniel Gustavsson, Linus Ottosson, Samuel Adolfsson
  • Patent number: 11628727
    Abstract: The present disclosure relates to a vehicular work machine (10) comprising a first electric motor arrangement (31) comprising one or more electric motors (21, 21?), and a second electric motor arrangement (32) comprising one or more electric motors (22, 22?) separate from said one or more electric motors (21, 21?) of the first electric motor arrangement (31). The vehicular work machine (10) further comprises a power connection (8) adapted to be connected to an external electric power source (17), an energy storage arrangement (23) and a hydraulic pump assembly (24) that is adapted to power hydraulic devices (5, 18, 19, 20) comprised in the vehicular work machine (10). At least one electric motor (21, 21?; 22, 22?) in each electric motor arrangement (31, 32) is adapted to propel the hydraulic pump assembly (24).
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: April 18, 2023
    Assignee: HUSQVARNA AB
    Inventor: Tommy Olsson
  • Patent number: 11628533
    Abstract: The present disclosure provides a floor grinding machine (1) for grinding floor surfaces of stone or stone-like material. The machine comprises a machine frame (2), a grinding head (3), supported by the machine frame (2), a motor (4), supported by the machine frame (2) and operatively connected to the grinding head (3), and a handle frame (5), extending from the machine frame (2), and pivotable relative to the machine frame (2). The machine further comprises a guide member (12), which is pivotable relative to the machine frame (2) and pivotable relative to the handle frame (5), a first locking device (14), for locking the guide member (12) relative to the handle frame (5), and a second locking device (13), for locking the guide member (12) relative to the machine frame (2). The disclosure further provides a handle for a floor grinding machine as well as methods of setting a position of a handle and methods of steering a floor grinding machine.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: April 18, 2023
    Assignee: HUSQVARNA AB
    Inventors: Fredrik Andersson, David Käcker, Andreas Fogelberg
  • Patent number: 11626743
    Abstract: A battery-powered tool (200) may include a first tool-side electrical contact (251), a battery detection switch (220), a tool load (300), and a load connection switching device (210). The load connection switching device (210) may be configured to make an electrical connection between the first tool-side electrical contact (251) and the tool load (300) in response to a state change of the battery detection switch (220). The tool (200) may define engagement positions with the battery (110). In the first engagement position, a first battery-side electrical contact (111) is electrically coupled to a first tool-side electrical contact (251), and the battery detection switch (220) is not physically engaged. In the second engagement position, the first battery-side electrical contact (111) is electrically coupled to the tool-side electrical contact (251), and the battery detection switch (220) is physically engaged to cause a state change of the battery detection switch (220).
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: April 11, 2023
    Assignee: HUSQVARNA AB
    Inventors: Ni Zugen, Yang Ming, Zhang Wu
  • Patent number: 11622513
    Abstract: A system with sensor equipment including one or more sensors and watering equipment disposed on a parcel of land and configured to selectively apply water to the parcel, and a gateway configured to provide for communication with the sensor equipment and the watering equipment. The watering equipment comprises a watering pump, wherein the watering pump is operably coupled to a water source and a water line to alternately couple the water source to and isolate the water source from the water line. The watering pump further includes a pump sensor assembly configured to direct the watering pump based on detected environmental and operational parameters.
    Type: Grant
    Filed: March 4, 2021
    Date of Patent: April 11, 2023
    Assignee: HUSQVARNA AB
    Inventors: Johannes Gungl, Florian Soor, Thomas Schabel, Juergen Link, Wolfgang Schwarz
  • Patent number: 11619024
    Abstract: A trench cutting machine for making a cut in a surface includes a frame with at least one rear axle and at least one front axle, and a rotatable circular blade mounted the frame. The front axle is vertically adjustable relative to the frame between a first position where the circular blade is lifted clear of the surface, and a second position where the circular blade is arranged to extend downwards from the frame to cut a predetermined distance into the surface. The frame includes an auxiliary front axle located in front of the axis of rotation of the circular blade. The auxiliary front axe and the rear axle are arranged to support the frame on the surface during a cutting operation and to maintain a selected depth of cut. A shroud assembly and a debris guiding device for such a machine are also included.
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: April 4, 2023
    Assignee: HUSQVARNA AB
    Inventor: Pierre Gustafsson
  • Patent number: 11607640
    Abstract: The present disclosure provides a method of operating a separator (1,1a, 1b) for separating particles from a particle-laden airflow. The method comprises receiving, in the controller (18), a separation unit status signal from the separation unit status sensor (16a, 16b, 16c, 16d), deriving, in the controller (18), separator status data based on the separation unit status signal, communicating, via the communication device (19), the separator status data to the external unit (1a, 1b, 26), receiving, via the communication device (19), incoming control data from the external unit (1a, 1b, 26), determining, in the controller (18), based on the separator status data and based on the incoming control data, whether to initiate separating unit maintenance, and selectively initiating separating unit maintenance based on said determination. The disclosure also provides a separator for implementing the method and a system comprising two or more such separators.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: March 21, 2023
    Assignee: HUSQVARNA AB
    Inventors: Daniel Gustavsson, Andreas Fogelberg
  • Patent number: 11596117
    Abstract: A system (100) for controlling garden equipment by operating a garden equipment control device (110), the system (100) comprising: a first module (120) configured to pair with the garden equipment control device (110) over a first network (N1), where the first module (120) is configured to control the garden equipment control device (110) when paired therewith; a second module (200) configured to wirelessly communicate with the garden equipment control device (110) over a second network (N2), wherein the second module (200) is connected to the garden equipment control device (110) through a gateway (210); and a controller associated with the garden equipment control device (110), wherein the controller is configured to check whether the garden equipment control device (110) is paired with the gateway (210); characterized in that: wherein when the controller determines that the garden equipment control device (110) is paired with the gateway (210): the second module (200) is enabled to control the garden equip
    Type: Grant
    Filed: November 19, 2020
    Date of Patent: March 7, 2023
    Assignee: HUSQVARNA AB
    Inventors: Dennis Koehler, Martin Lienhard
  • Patent number: 11589513
    Abstract: A riding lawn care vehicle may include a frame, a steering assembly, a first brake assembly, and a first biasing assembly. A first drive wheel and a second drive wheel of the riding lawn care vehicle are operably coupled to the frame. The steering assembly includes a first steering lever and a second steering lever. The first and second steering levers are operably coupled to corresponding ones of the first and second drive wheels via a first hydraulic motor and a second hydraulic motor, respectively, to facilitate turning of the riding lawn care vehicle based on drive speed control of the first and second drive wheels responsive to positioning of the first and second steering levers to control the first and second hydraulic motors. The first brake assembly is operably coupled to the first hydraulic motor to enable a braking force to be selectively applied to a motor shaft of the first hydraulic motor responsive to movement of the first steering lever from an inboard position to an outboard position.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: February 28, 2023
    Assignee: HUSQVARNA AB
    Inventor: Braxton W. Reese
  • Patent number: 11579634
    Abstract: An irrigation controller is disclosed together with associated methods and computer program products. User input specifying a requested start time may be received. A total desired watering time may be calculated. A total permissible watering time may be calculated. The start time may be moved back relative to the requested start time in response to determining that the total permissible watering time is less than the total desired watering time.
    Type: Grant
    Filed: April 5, 2021
    Date of Patent: February 14, 2023
    Assignee: Husqvarna AB
    Inventors: Brad J. Wardle, Stuart J. Eyring, Jason R. Sims
  • Patent number: 11577422
    Abstract: A hanger for suspending a chainsaw in a display is provided. The display may include a bar assembly that includes two parallel bars that project substantially parallel to each other. The hanger may include a first interface portion disposed at a first end of the body, and the first interface portion may include a first aperture and a second aperture. The hanger may additionally include a second interface portion disposed proximate to a second end, and a portion of the first face of the body may extend along a guide bar of the chainsaw. The second interface portion may align with a receiving orifice formed in the guide bar to enable a releasable fastener to operably couple the guide bar to the hanger. The first and second apertures may be configured to slidingly engage with the bars of the bar assembly to suspend the chainsaw from the bar assembly.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: February 14, 2023
    Assignee: HUSQVARNA AB
    Inventors: Ruben Enriquez, Paul Warfel, Kofi Addai, Michelle Sordi, Bart Goodell, David Jonathan Hine, David A. Furth
  • Patent number: 11571980
    Abstract: A robotic lawnmower system comprising a charging station (210) and a robotic work tool (100), the charging station comprising a signal generator (240) to which a boundary cable (250) is to be connected, the signal generator (240) being configured to transmit a signal (245) through the boundary cable (250), and the robotic working tool (100) comprising a sensor (170) configured to pick up magnetic fields generated by the signal (245) in the boundary cable (250) thereby receiving the signal (245) being transmitted and a controller (110) configured to analyse the picked up signal, wherein the signal generator (240) is further configured to: prefilter the signal through an filter model; and transmit the prefiltered signal to through the boundary cable (250) by means of a current generator.
    Type: Grant
    Filed: March 21, 2018
    Date of Patent: February 7, 2023
    Assignee: HUSQVARNA AB
    Inventor: Marcus Liljedahl
  • Patent number: D977069
    Type: Grant
    Filed: May 1, 2020
    Date of Patent: January 31, 2023
    Assignee: Husqvarna AB
    Inventor: Andrew Mark Urry
  • Patent number: D980029
    Type: Grant
    Filed: April 5, 2021
    Date of Patent: March 7, 2023
    Assignee: Husqvarna AB
    Inventors: Gustav Landberg, Tor Sigurdson, Markus Hedberg
  • Patent number: D980030
    Type: Grant
    Filed: April 5, 2021
    Date of Patent: March 7, 2023
    Assignee: Husqvarna AB
    Inventors: Gustav Landberg, Tor Sigurdson, Markus Hedberg
  • Patent number: D980031
    Type: Grant
    Filed: April 5, 2021
    Date of Patent: March 7, 2023
    Assignee: Husqvarna AB
    Inventors: Gustav Landberg, Tor Sigurdson, Markus Hedberg
  • Patent number: D988372
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: June 6, 2023
    Assignee: HUSQVARNA AB
    Inventors: Rajinder Mehra, Malin Andersson, Tor Sigurdson