Patent ID: 8353109

Claim:
A knife comprising: a housing; a blade carrier supported within the housing and adapted to hold a blade and movable between a safety position in which the blade mounted on the blade carrier is retracted into the housing, a first cutting position in which the blade projects out of the housing, and a second cutting position offset from the first position and from the safety position; an actuating element; a pivot joint connecting the actuating element to the blade carrier; a handle coupled to the actuating element and movable therewith between a nonactuated position and an actuated position such that on movement from the nonactuated position to the actuated position the actuating element displaces the blade carrier from the safety position into the first cutting position; and a support element engageable between the housing and the actuating element and bracing the actuating element against the housing on movement of the handle from the nonactuated position to the actuated position and forcing the blade carrier to move into the first cutting position, movement of the blade into the second cutting position disengaging the support element from between the actuating element and the housing and permitting the blade carrier to move from the second cutting position into the safety position with the handle in the actuated position.