US 12,459,101 B2
Handheld power tool
Andreas Jonsson, Huskvarna (SE); Jens Frobom, Huskvarna (SE); Jakob Leijon, Huskvarna (SE); and Simon Andregard, Huskvarna (SE)
Assigned to HUSQVARNA AB, Huskvarna (SE)
Filed by HUSQVARNA AB, Huskvarna (SE)
Filed on Feb. 8, 2024, as Appl. No. 18/436,506.
Claims priority of application No. 2350119-0 (SE), filed on Feb. 8, 2023.
Prior Publication US 2024/0261955 A1, Aug. 8, 2024
Int. Cl. B25F 5/00 (2006.01); B25F 5/02 (2006.01); H01H 36/00 (2006.01)
CPC B25F 5/02 (2013.01) [H01H 36/00 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A handheld power tool comprising:
an electronic control unit,
a housing accommodating the electronic control unit,
an actuator movably arranged on the housing between a first position and a second position, and
a switch assembly comprising a magnet and a sensor configured to sense a magnitude of a magnetic field,
wherein one of the sensor and the magnet is arranged in the housing and the other of the sensor and the magnet is arranged on a portion of the actuator such that a relative distance between the magnet and the sensor is different when the actuator is in the second position than when the actuator is in the first position,
wherein the handheld power tool comprises a control circuit connected to the sensor, wherein the control circuit and the switch assembly are configured such that the control circuit switches from a first state to a second state when the actuator is moved from the first position in which the actuator is unactuated to the second position in which the actuator is actuated,
wherein the handheld power tool further comprises:
a power source configured to power a tool of the handheld power tool, and
a control arrangement operably connected to the power source,
wherein responsive to the control circuit being in the first state, the control arrangement is configured to render the power source operable, and
wherein responsive to the control circuit being in the second state, the control arrangement is configured to render the power source inoperable.