Ratchet wrench

Claim 1

A ratchet wrench comprising, in combination, a pair of substantially identical, flat plates disposed in spaced-apart, overlying, aligned relationship to define a gap therebetween, said plates having opposite end portions forming a gripping segment and a head segment respectively and a neck segment intermediate said head segment and said gripping segment to form a handle, a flat plate member disposed within said gap in sandwiched relationship with said plates and extending throughout said gripping segment, said plate member being provided with a recess at the end adjacent said neck segment, a plurality of longitudinally spaced rivets in said gripping segment extending vertically through said plates and said plate member, said plates having a pair of vertically aligned openings in said head segment, an elongated, tubular adapter having a central bore and an upper end portion extending through said head segment openings with said adapter central bore in coaxial relationship with said openings to form a continuous passage, at least one annular flange on said adapter upper end portion for sliding engagement with one of the plates of said head segment to permit rotation of said adapter relative to said head segment, a ratchet gear having teeth mounted on said adapter upper end portion and disposed within said gap between said plates within said head segment, a plurality of sockets each having a central bore provided at one end with a portion for engaging a nut of a selected size, and an adapter engaging portion at the other end, said adapter having a lower end portion of a cross-sectional shape for accommodation within the adapter engaging portion of each of said sockets selectively with said socket central bore in axial alignment with said adapter central bore to form a continuous passage through said socket, said adaptor and said openings in said head segment thereby accommodating a bolt on which a nut engaged by said socket is mounted, a pawl disposed within said gap at the end of said neck segment opposite said plate member in sandwiched relationship with said plates for pivotal movement within said gap and having one side portion extending within said neck segment, a rivet extending vertically through said plates and said pawl for supporting said pawl for said pivotal movement, said pawl one side portion being provided with a recess, the other side portion of said pawl adjacent said head segment being provided with a pair of spaced-apart teeth engaging surfaces, a substantially S-shaped leaf spring disposed within said gap along said neck portion having opposite ends accommodated with said pawl recess and said plate member recess respectively for yieldingly urging said pawl pivotally in one direction to engage one of said engaging surfaces with said ratchet gear teeth for rotation of said ratchet gear together with said adapter and socket mounted thereon in one direction during the movement of said handle in one direction, the said pawl being pivotally movable by said ratchet gear teeth against the urging force of said spring to engage the other of said engaging surfaces on said pawl with said ratchet gear teeth for rotation of said ratchet gear together with said adapter and socket mounted thereon in the opposite direction during the movement of said handle in the opposite direction.