Patent ID: 6775911
Filing Date: 2004-08-17
Classification: B26B

Abstract:
Cutting device with a retractable blade comprising a blade and a sleeve into which it is adapted to be retracted, characterized in that it comprises:support means (16) for the blade (12), having means forming a drive abutment (36), adapted to slide along the axis of said sleeve (10) between a first rest position in which the blade (12) is retracted and a first working position in which the blade (12) is extended outside said sleeve (10), said support means (16) being, in said first working position, adapted to be carried from a second rest position to a second working position, spaced from the axis (M) of said sleeve (10), by passing through a second intermediate position; a first resilient return means (19) adapted to hold said support means (16) of the blade (12) in said first rest position; controllable movement means (26) mounted on said sleeve (10), adapted to coact with said support means (16) and to bear against said drive abutment forming means (36) to drive said support means (16) of the blade (12) from said first rest position toward said first working position; abutment means adapted to receive said support means (16) of the blade (12) in said second working position to block them in translation; and in that the drive of the blade (12) by means of said sleeve (10) against a surface to be cut drives said support means (16) into said second working position and effects the disengagement of said controllable movement means (26) and engages in said drive abutment forming means (36) such that said resilient return means (19) drive said support means (16) of the blade (12) into said first rest position as soon as the blade (12) is no longer in contact with said surface and that said abutment means free said support means (16) of the blade (12) which are carried from said second working position toward said second intermediate position; characterized in that said support means (16) of the blade, have an upper portion (32) and a lower portion (34), extending longitudinally and comprising a first end (14) in which the blade (12) is held in prolongation of said support means (16) of the blade (12), an intermediate portion (20) comprising said drive abutment forming means (36) and a second end (22) for guiding said support means (16); and characterized in that said drive abutment forming means (36) are constituted by two lug forming means disposed on side surfaces of said intermediate portion (20) in its lower portion (34), opposite to each other and whose abutment surface (44) is substantially perpendicular to said support means.