Patent ID: 8266990
Filing Date: 2012-09-18
Classification: B25B

Abstract:
1. A push button multi-position locking pliers for grasping an object, comprising: a main handle having a fixed jaw, an adjustment slot having a plurality of jaw positioning stations each having a rounded hole, and a distal end spaced from said fixed jaw having an adjustment screw; a locking handle having a jaw end and a distal end spaced from said jaw end; a movable jaw member pivotally coupled to said jaw end of said locking handle and having a movable jaw; a pivot positioned in said movable jaw member and said adjustment slot pivotally coupling said movable jaw member to said main handle; a link member pivotally connected to said locking handle and engaging said adjustment screw; an over-center spring connected between said main handle and said movable jaw member biasing said link member against said adjustment screw; a positioning mechanism for positioning said movable jaw member along said adjustment slot in one of said jaw positioning stations; said positioning mechanism having said pivot and a pivot spring; said pivot having an engaged position in one of said jaw positioning stations and a disengaged position not in one of said jaw positioning stations; said pivot spring biasing said pivot in said engaged position; said pivot having a longitudinal axis, a push button, a rounded shoulder substantially matching said rounded holes, and a frustoconical section which is shaped and dimensioned to guide said rounded shoulder into one of said rounded holes; said pivot movable by pressing said push button along said longitudinal axis against said bias of said pivot spring to disengage said pivot from said engaged position in one of said rounded holes and move said pivot to another one of said plurality of jaw positioning stations having another of said rounded holes; and, said pivot spring pushing said pivot to center on said rounded hole upon release of said push button by said frustoconical section engaging said rounded hole when said rounded shoulder is not in alignment with said rounded hole and pushing said pivot to a self center position so that said rounded shoulder is in alignment with said rounded hole.