Patent ID: 6502482
Filing Date: 2003-01-07
Classification: B25B

Abstract:
Self-closing pliers (1) which is actuated by one hand, having two pliers legs (2, 3) which are connected to one another by an articulation bolt (4), wherein a pliers mouth (M) is formed above a crossover region of the pliers legs (2, 3) and handle sections (7, 8) are formed on the pliers legs (2, 3) below the crossover region, wherein one of the pliers legs (3), which is adjustable relative to the other pliers leg (2), which is nonadjustable, in the crossover region in order to change the size of the pliers mouth (M), has a free space (F) which is penetrated by the other pliers leg (2), wherein the pliers mouth is formed by a first movable jaw (6) extending from the adjustable pliers leg (3) and a second jaw (5) extending from the non-adjustable pliers leg (2), and wherein, furthermore, the pliers legs (2, 3) are connected via a regulating element (13) comprising a spring drive with a spring (14), which spring biases the pliers mouth (M) into an open position, said open position is produced automatically under spring loading once the handle sections (7, 8) are relieved of loading, wherein, moreover, in a first section of movement of the spring drive (12), the pliers-mouth jaws (5, 6) move towards one another and, in a second movement section, a catch (10) of the articulation bolt (4) engages in a latching toothing formation (11), whereupon forced rotation of the movable pliers-mouth jaw (6) about the articulation bolt (4) is attainable,wherein said spring (14) is supported on the two pliers legs (2, 3), said spring effects expansion of the pliers legs (2, 3) into a spaced-apart position, and said spring effects displacement of the movable pliers leg (3) into a largest open position of the mouth, the expansion and the displacement of the pliers legs being accomplished by said spring with rotation of the adjustable pliers leg (3) by said spring (14), wherein the pliers include a rotary support for the spring (14) located on the adjustable pliers leg (3) on at least one side and on said side, in a non-actuated state, the spring (14) butts against a rotary stop (19) formed on the non-adjustable pliers leg (2), wherein, upon displacement of the movable pliers leg (3) into a workpiece-gripping closed construction of the mouth, the spring (14) is released from the rotary stop only with actuation of force when the pliers-mouth jaws (5, 6) are butting against a workpiece.