Patent ID: 9248555
Filing Date: 2016-02-02
CPC Classification: B25B

Claim Text:
1. A locking tool comprising: a first handle piece movably connected to a second handle piece and at least one third piece; said first handle piece having a jaw portion at one end, an axle aperture at another end and an arc cam slot positioned therebetween; said second handle piece having a jaw portion at one end, an axle aperture at another end and an arc cam slot positioned therebetween; an axle pin positioned in the axle aperture of the first handle piece and the axle aperture of the second handle piece; said jaw portions in said first and second handle pieces having complementary jaw portions that cooperate to form an engaging opening; said at least one third piece having an inclined holding hole; a diagonal locking pin positioned in said inclined holing hole and through the arc cam slots of the first and second handle pieces, the diagonal locking pin tilting at an angle corresponding to an inclined angle defined by the inclined holding hole, the overlapping arc cam slots of the first and the second handle pieces forming a diamond shaped aperture defining contact points at four corners; whereby the curvature of the arc cam slots blocks sliding motions of the tilting diagonal locking pin along the arc cam slots to secure the jaw portions in a desired position by engaging the tilting diagonal locking pin with the contact points, and wherein moving the third piece to align the diagonal locking pin through the diamond shaped aperture releases the engagement of the diagonal locking pin allowing for repositioning of the jaw portions.