Patent ID: 8935972
Filing Date: 2015-01-20
Classification: A62C,B25B

Abstract:
1. A method for operating a rescue tool for uncoupling a seized coupling or cap, comprising: (a) engaging a seized coupling or cap having a cylindrical surface and a plurality of lugs with a rescue tool, said rescue tool comprises a first member comprising a proximate end and a distal end comprising a proximately disposed first handle and a distally disposed first jaw; a second member comprising a proximate end and a distal end comprising a proximately disposed second handle and a distally disposed second jaw; and means for pivotably connecting the members comprising a pivot axis, being disposed between the handles and jaws so that the handles pivotably move from a closed position to a fully opened position; said first handle comprises a wedge having a through hole; and said first handle further comprises a grip portion extending between the wedge and the jaws; said second handle comprises a hook disposed at the proximate end for contacting engagement with one of the lugs, said second handle further comprises a curved surface in facing disposition with the hook for operably engaging a coupling or a cap, wherein the second handle curved surface comprises a generally sinusoidal surface comprising a convex portion and a concave portion having a transitional surface between the convex and concave portions in contacting engagement with the coupling or cap cylindrical surface; and further comprising (b1) gripping the first handle grip portion, so that the gripping extends between the wedge and jaws, said first handle grip portion further comprises a front surface, and a rear surface, an inner surface and an outer surface, (b2) disposing the thumb on the front surface, (b3) extending the thumb towards the wedge, and said gripping extending to the first handle inner surface, and further comprising (b4) exerting a leverage force from the grip portion distally through the jaws to the second handle transitional surface; wherein with the first handle gripped and the leverage force exerted from the first handle through the jaws to the second handle transitional surface and in turn to the coupling or cap cylindrical surface with the hook contactingly engaged with a lug, and wherein with the handles fully opened a greater resultant torque force is generated than with the handles closed so that the seized coupling or cap is more readily uncoupled.