| 主权项 |
1. A nutcracker comprising:
a torsion spring; a first link with top and bottom shaft clearance holes; a second link with top and bottom shaft clearance holes; a top jaw with a top surface, a bottom surface, a right end, a left end, a front face and a back face where said top surface, said right end, said left end, said front face and said back face are all at right angles to said top surface, where said top surface has a top left notch on said left end running from said front face to said back face, a top right notch on said right end running from said front face to said back face, and a top center slot running from said front face to said back face, centered between said left end and said right end, where said top jaw has a height on said left end and a smaller height on said right end and said bottom surface has serrations running from said front face to said back face; a top left cap with an outboard side, an inboard side, a proximal face, a top left cap attachment surface fastened in said top left notch with said proximal face of said top left cap flush with said front face of said top jaw and said top left cap outboard side flush with said left end of said top jaw, where said top left cap has a top shaft clearance hole; a top center lever with a proximal end, a distal coupling end, a proximal face, a top center attachment surface fastened in said top center slot of said top jaw with said proximal face of said top center lever flush with said front face of said top jaw, a left side, a top side and a bottom side, where said top center lever has a top shaft clearance hole, a coupling hole towards distal end of said top center lever, a top spring retaining stud protruding from said left side of top center lever located toward said coupling hole, where said top spring retaining stud has a spring retaining groove a sufficient axial distance from said left side of said top lever arm as to exceed the radius of said torsion spring; where said bottom side of said top center lever has a convex radius distending below said bottom side of said top lever the same thickness as said top lever located on the mid portion of said bottom side of said top lever; a top right cap with a proximal face, an inboard side, an outboard side, with a top right cap attachment surface fastened in said top right notch with said proximal face flush with said front face of said top jaw and said outboard side being flush with said right end of said top jaw, where said top right cap has a top shaft clearance hole; a top shaft with e-retaining ring grooves around shaft towards both ends at an axial distance from each end equivalent to the thickness of said top cap and said link; a bottom shaft with an e-retaining ring groove around shaft towards both ends at an axial distance from each end equivalent to the thickness of said bottom cap and said link; a bottom jaw with a top surface, a bottom surface, a right end, a left end, a front face and a back face where said bottom surface, said right end, said left end, said front face and said back face are all at right angles to said bottom surface, where said bottom surface has a bottom left notch on said left end running from said front face to said back face, a top right notch on said right end running from said front face to said back face, and a top center slot running from said front face to said back face, centered between said left end and said right end, where said bottom jaw has a height on said left end and a smaller height on said right end and said top surface has serrations running from said front face to said back face; a bottom left cap with a proximal face, an inboard side, an outboard side, with a bottom left cap attachment surface fastened in said bottom left notch with said proximal face flush with said front face of said bottom jaw and said outboard side being flush with said left end of said bottom jaw, where said bottom left cap has a bottom shaft clearance hole; a bottom center lever with a proximal end, a distal coupling end, a proximal face, a bottom center attachment surface fastened in said bottom center slot of said bottom jaw with said proximal face of said bottom center lever flush with said front face of said bottom jaw, a left side, a top side and a bottom side, where said bottom center lever has a bottom shaft clearance hole, a coupling hole towards distal end of said bottom center lever, a bottom spring retaining stud protruding from said left side of bottom center lever located toward said coupling hole, where said bottom spring retaining stud has a spring retaining groove a sufficient axial distance from said left side of said bottom lever arm as to exceed the radius of said torsion spring; where said top side of said bottom center lever has a concave radius extending below said top side of said bottom lever located on the mid portion of said top side of said bottom lever; a bottom right cap with an outboard side, an inboard side, a proximal face, a bottom right cap attachment surface fastened in said bottom right notch with said proximal face of said bottom right cap flush with said front face of said bottom jaw and said bottom right cap outboard side flush with said right end of said bottom jaw, where said bottom right cap has a top shaft clearance hole; said convex radius on said top center lever pivots in said concave radius in said bottom lever when said clearance holes in said left and right top caps, said left and right bottom caps, said top and bottom levers and said links are properly spaced; and where said top shaft is slipped through said top left cap clearance hole, then through said top shaft clearance hole in first link, then through said top center lever shaft clearance hole, then through top shaft clearance hole in second link, then through top right cap clearance hole such that ends of said top shaft are equidistant from outboard sides of said top left cap and said top right cap, said first and second links are then pushed as far outboard as they can be exposing said e-retaining ring slots, e-retainers are snapped in place; where said bottom shaft is slipped through said bottom left cap clearance hole, then through said bottom shaft clearance hole in first link, then through said bottom center lever shaft clearance hole, then through said bottom shaft clearance hole in second link, then through said bottom right cap clearance hole such that ends of said bottom shaft are equidistant from outboard sides of said bottom left cap and said bottom right cap, said first and second links are then pushed as far outboard as they can be exposing said e-retaining ring slots, e-retainers are snapped in place; and said torsion spring is connected between said top spring retaining stud and said bottom spring retaining stud slipping said spring end hooks into said spring retaining grooves providing an assist in opening said jaws; and where said coupling holes in said top and bottom center levers are provided for attaching to a scissoring arms with linkage assembly for spreading apart and closing together said coupling ends of said top center lever and said bottom center lever that provides a mechanical advantage to an operator while closing said jaws and cracking a nut. |
