Patent ID: 8561305
Filing Date: 2013-10-22
Classification: B26B

Abstract:
1. A knife, comprising: a handle enclosing at least a portion of one or more of a blade, a blade shuttle, a transmission, and a trigger, the handle comprising a blade aperture; the blade shuttle longitudinally moveable relative to the handle from a rest position to a first extended position and from the rest position to a second extended position, the first extended position differentiated from the second extended position, the blade shuttle moveable longitudinally from the first extended position and the second extended position to a cutting position when the blade is engaged in a workpiece, the knife configured such that the blade shuttle is automatically retracted from the cutting position to the rest position when the blade is disengaged from the workpiece; the blade secured within the blade shuttle, a distal end of the blade protruding a first distance from the blade aperture at the first extended position and a second distance from the blade aperture at the second extended position, the first distance differentiated from the second distance, the knife configured such that when the distal end of the blade protrudes the first distance from the blade aperture, the distal end of the blade moves to a distance from the blade aperture greater than the first distance from the blade aperture when the blade is engaged in the workpiece, and when the distal end of the blade protrudes the second distance from the blade aperture, the distal end of the blade moves to a distance from the blade aperture greater than the second distance from the blade aperture when the blade is engaged in the workpiece, the knife configured such that the blade is automatically retracted to a safe position within the handle when the blade is disengaged from the workpiece; and the trigger adapted to drive the blade shuttle from the rest position to the first extended position and from the rest position to the second extended position via the transmission, the blade shuttle is in a fully extended position relative to the rest position in both the first and second extended positions; and a position selector interposed between the handle and the trigger and adapted to limit a trigger stroke relative to the handle so as to drive the blade shuttle to one of the first extended position and the second extended position, the position selector comprising: a stem; a base comprising a first seat and a second seat; and a dial accessible to an exterior of the handle and coupled to the stem, the dial adapted to rotate the stem to a first position selection and a second position selection, the stem adapted to protrude into the first seat at the first position selection upon a first actuation of the trigger and the second seat at the second position selection upon a second actuation of the trigger, the blade adapted to protrude the first distance through the blade aperture at the first position selection upon the first actuation of the trigger and the second distance through the blade aperture at the second position selection upon the second actuation of the trigger.