Patent ID: 8302512

Claim:
A locking pliers comprising: a hollow first handle unit ( 10 ); a stationary jaw ( 11 ) having one corner of a rear end pivotably secured to the first handle unit ( 10 ) and comprising a locking recess ( 111 ) at the other corner of the rear end; a hollow second handle unit ( 20 ) pivotably secured to the other corner of the rear end of the stationary jaw ( 11 ) and comprising a lengthwise hollow ( 21 ), a trough ( 22 ) at a forward end of the hollow ( 21 ), two inward bending members ( 24 ) on both sidewalls of the hollow ( 21 ) respectively, the bending members ( 24 ) being disposed proximate to an inner mouth of the trough ( 22 ), and a U-shaped opening ( 23 ) disposed proximate to an outer mouth of the trough ( 22 ); a pivotal locking unit ( 50 ) interconnected between the first and second handle units ( 10 , 20 ); a slide bar ( 30 ) mounted in both the second handle unit ( 20 ) and the locking unit ( 50 ) and comprising a wavy edge ( 35 ) facing bottom of the hollow ( 21 ), the wavy edge ( 35 ) including a rear slot member ( 34 ) and a forward hook ( 35 ); an adjustment screw ( 60 ) extending rearward of the second handle unit ( 20 ); a U-shaped member ( 61 ) engaged with and between the adjustment screw ( 60 ) and the locking unit ( 50 ), the U-shaped member ( 61 ) being adapted to receive a rear portion of the slide bar ( 30 ); and a movable jaw ( 40 ) disposed at a forward end of the second handle unit ( 20 ) and comprising two intermediate opposite stop members ( 41 ) each having an inclined edge ( 413 ), a channel ( 411 ) formed between the stop members ( 41 ) with a forward end of the slide bar ( 30 ) movably received therein, and a rear stop bar ( 412 ) interconnected two sidewalls of a rear portion of the movable jaw ( 40 ), the inclined edges ( 413 ) being stopped by the bending members ( 24 ) for retaining the stop members ( 41 ) in an inoperative position, whereby pulling the movable jaw ( 40 ) to engage the stop bar ( 412 ) with the hook ( 33 ), further pulling both the movable jaw ( 40 ) and the slide bar ( 30 ), clockwise pivoting the slide bar ( 30 ) until the slot member ( 34 ) is rested upon bottom of the opening ( 23 ) and a rear end of the slide bar ( 30 ) is retained in the locking recess ( 111 ), and moving the movable jaw ( 40 ) relative to the slide bar ( 30 ) by moving the stop bar ( 412 ) along the wavy edge ( 35 ) will adjust a distance between the stationary jaw ( 11 ) and the movable jaw ( 40 ).