US 12,671,245 B2 · Kickback control methods for a power tool including a force sensor

Abstract

A power tool including a housing, a motor having a rotor and a stator, at least one grip sensor configured to generate a grip parameter, and a switching network electrically coupled to the brushless DC motor. An electronic processor is connected to the switching network and the at least one grip sensor and configured to implement kickback control of the power tool. The electronic processor is configured to determine a kickback threshold based on the grip parameter, control the switching network to drive the motor, receive a signal related to a power tool characteristic, determine, based on the power tool characteristic being greater than or equal to the kickback threshold, that a kickback event of the power tool is occurring, and control, in response to determining that the kickback event is occurring, the switching network to cease driving of the motor.

Claims18

Dependent claims

A power tool comprising:

a housing including a motor housing portion, a handle portion, and a battery pack interface;
a motor within the motor housing portion;
a trigger configured to be actuated to cause the power tool to drive the motor;
at least one grip sensor supported by the housing and configured to generate a grip parameter, wherein the grip parameter represents a user grip on the housing;
a switching network electrically coupled to the motor;
a transceiver configured to wirelessly communicate with an external device;
and
an electronic processor connected to the transceiver, the switching network, and the trigger, wherein the electronic processor is configured to:
receive, from the external device via the transceiver, an indication of whether to perform kickback control;
determine a kickback threshold based on the grip parameter;
and
control, in response to the trigger being actuated, the switching network to drive the motor in accordance with the indication and in accordance with the kickback threshold determined based on the grip parameter.

9 more elements

Dependencies are inferred from the claim text.

Kickback control methods for a power tool including a force sensor

Life of this patent

Kickback control methods for a power tool including a force sensor

Life of this patent

Abstract

Claims18