US 11,897,113 B2
Hand held power tool with a human machine interface
Tobias Nyberg, Huskvarna (SE); Christian Bylund, Huskvarna (SE); Henric Isén, Huskvarna (SE); Martin Larsén, Jönköping (SE); Pär-Ola Svensson, Forserum (SE); and Stefan Stark, Huskvarna (SE)
Assigned to HUSQVARNA AB, Huskvarna (SE)
Appl. No. 17/252,039
Filed by HUSQVARNA AB, Huskvarna (SE)
PCT Filed Jun. 25, 2019, PCT No. PCT/SE2019/050613
§ 371(c)(1), (2) Date Dec. 14, 2020,
PCT Pub. No. WO2020/013747, PCT Pub. Date Jan. 16, 2020.
Claims priority of application No. 1850881-2 (SE), filed on Jul. 11, 2018.
Prior Publication US 2021/0252688 A1, Aug. 19, 2021
Int. Cl. B25F 5/02 (2006.01); A01G 20/47 (2018.01); A01D 34/416 (2006.01); A01G 3/053 (2006.01); B23D 45/16 (2006.01); B23D 57/02 (2006.01); B25F 3/00 (2006.01)
CPC B25F 5/02 (2013.01) [A01D 34/416 (2013.01); A01G 3/053 (2013.01); A01G 20/47 (2018.02); B23D 45/16 (2013.01); B23D 57/023 (2013.01); B25F 3/00 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A power tool comprising:
a tool implement,
an elongated body defining a longitudinal axis,
a first handle portion attached to the elongated body at a first position along the longitudinal axis,
a power source arranged to power the tool implement,
a second handle portion attached to the elongated body at a second position along the longitudinal axis and comprising a throttle lever, wherein the first position is closer to the tool implement along the longitudinal axis than the second position,
a circuit board located in a sealed enclosure,
a human machine interface comprising components arranged on and adjacent a first side of the circuit board,
a magnet operably connected to the throttle lever, wherein the magnet is moveably arranged along an arc in response to a displacement of the throttle lever, and
a sensor arrangement configured to sense an intensity of a magnetic field of the magnet, wherein the sensor arrangement is arranged on and adjacent a second side of the circuit board, wherein the sensor arrangement comprises at least two sensors each configured to sense the intensity of the magnetic field of the magnet along a different sensing direction,
wherein the magnet is located outside of the sealed enclosure.