US Patent 9358692 Safety knife

A knife (1) and a knife housing (2, 4). The knife comprises the housing (2, 4), which includes a blade slider (20) which is mounted to the housing (2, 4) and is reciprocable by means of an actuating device (6) between a safety position and a cutting position, and a return element (30) for applying a return force to the blade slider (20) in the direction of the safety position. The knife further comprises a blade (10) arranged on the blade slider (20). In this arrangement the blade (10) is mounted rotatably to the blade slider (20).