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US 2019/0291192 A1Published application
Trigger lock for a miter saw
AssigneeTti (Macao Commercial Offshore) Limited
InventorMichael Hart
Life of this patent
Estimating the term…
Abstract
A miter saw includes a base assembly and a saw unit pivotably coupled to the base assembly. The saw unit includes a motor for driving a saw blade about a rotational axis, a handle, a trigger coupled to the handle and moveable between a first position in which the motor is deactivated, and a second position in which the motor is activated to drive the saw blade, and a trigger lock pivotably coupled to the trigger for movement therewith to prevent movement of the trigger from the first position to the second position.
Claims20
A miter saw comprising:
- a handle defining a gripping axis;
- a trigger including first and second sides, the first side defining a plane intersecting the gripping axis, the first and second sides positioned opposite each other in a direction along the gripping axis of the handle, a top surface extending between the first and second sides, a bottom surface opposite the top surface, and a gripping surface also extending between the first and second sides, the trigger coupled to the handle and slidable along an actuation axis between a first position in which the miter saw is deactivated, and a second position in which the miter saw is activated;
- and
- a trigger lock pivotably coupled to the trigger about a pivot axis for movement with the trigger along the actuation axis, the trigger lock preventing movement of the trigger from the first position to the second position;
- wherein the trigger lock is configured to pivot from a locked position to an unlocked position in response to a finger of an operator sliding along the gripping surface of the trigger in a lateral direction from the first side to the second side of the trigger;
- and
- wherein the first side of the trigger includes an opening in which a portion of the trigger lock extends to engage a wall of the handle to prevent movement of the trigger from the first position to the second position.
4 more elements
A miter saw comprising:
- a handle defining a gripping axis;
- a trigger including first and second sides positioned opposite each other in a direction along the gripping axis of the handle, the first side defining a plane intersecting the gripping axis, the first side having a slide coupled to the handle to enable slidable movement of the trigger along an actuation axis between a first position and a second position, the trigger also including a top surface extending between the first and second sides, a bottom surface opposite the top surface, and a gripping surface also extending between the first and second sides;
- a switch coupled to the handle, the switch biased into a first state in which the miter saw is deactivated when the trigger is in the first position, the switch movable from the first state to a second state to activate the miter saw in response to the slide actuating the switch when the trigger is in the second position;
- and
- a trigger lock pivotably coupled to the trigger by a pin for movement with the trigger along the actuation axis, the trigger lock preventing movement of the trigger from the first position to the second position when the trigger lock is in a locked position, the trigger lock pivotable from the locked position to an unlocked position in response to a finger of an operator sliding along the gripping surface of the trigger in a lateral direction from the first side to the second side of the trigger;
- wherein the first side of the trigger includes an opening in which a portion of the trigger lock extends to engage a wall of the handle to prevent movement of the trigger from the first position to the second position when the trigger lock is in the locked position;
- and
- wherein a portion of the gripping surface of the trigger defines a trigger plane substantially parallel to the gripping axis of the handle, and wherein the pin is positioned on one side of the trigger plane in a direction transverse to the trigger plane and the switch is positioned on the other side of the trigger plane in a direction transverse to the trigger plane.
5 more elements
Dependencies are inferred from the claim text.