Patent ID: 6708587
Filing Date: 2004-03-23
Classification: B25B

Abstract:
Clamping pliers comprising:a first plier arm having a first handle portion and a first workpiece grip_structure distal from said first handle portion; a second plier arm having a second handle portion and a second workpiece grip structure distal from said second handle portion, pivotally connected in a scissor arrangement to said first plier arm, such that said first plier arm is movable with respect to said second plier arm about a plier pivot axis; a bias spring arranged to urge a separating movement of said first plier arm with respect to said second plier arm, about said plier pivot axis, such that said first workpiece grip structure moves away from said second workpiece grip support structure and said first handle portion moves away from said second handle portion; a toothed structure attached to one of said first plier arm and said second plier arm; a manually movable actuation member movably connected to the other of said first plier arm and said second plier arm; a catch member, having a tooth engagement structure, movably connected to the other of said first plier arm and said second plier arm to be movable between a resting position and a release position by a movement of the manually movable actuator member, wherein said tooth engagement structure is engaged with said tooth structure in the resting position to substantially prevent said separating movement, wherein said manually movable actuator member, said catch member and said bias spring are arranged such that said bias spring urges said catch member toward said resting position, wherein said catch member and said manually movable actuator member are movably connected to said other of said first plier arm and said second plier arm by a first pivot pin extending through said catch member, and through said manually movable actuator member and said other of said first plier arm and said second plier arm, and wherein said catch member includes a first elongated slot and a second L-shaped slot having a first elongated section extending substantially parallel to an extending direction of said first elongated slot and a second elongated section extending substantially perpendicular to said first elongated section and wherein said catch member is movably connected to said other of said first plier arm and said second plier arm by said first pivot pin extending through said first elongated slot and by a second pivot pin extending parallel to said first pivot pin from said manually movable actuator member into said L-shaped slot.