Folding knife

Claim 1

A knife comprising a pair of elongate parallel metal plates each having a plate recess at one end, an elongate detent member intermediate said plates extending along an elongate edge of said plates with said detent member having a grip at one end overlapping said recess, a tooth at the other end of said detent member, a dentent pivot pin press fixed in saId plates for pivotably supporting said detent member intermediate the ends of said detent member, a knife blade having a cutting edge adapted to be recessed between said plates in response to said blade being closed, a pin extending through said plates carrying a hardened bushing extending through said blade only for pivotably supporting one end of said blade between said plates adjacent said other end of said detent member, a cam surface formed on said one end of said blade with said surface terminating in a recess for receiving said tooth in response to said blade being pivoted to an open position for locking said blade in said open position, a metal spacer between said plates adjacent said plate recess, metal spacer pins extending through said plates and spacer for fixing said spacer between said plates, a cantilever spring integrally formed on said spacer and extending toward said detent member pivot pin for engaging said detent member between said detent pivot pin and said detent member one end to bias said tooth into engagement with said blade recess and for resisting movement of said detent member one end toward said plates, said detent member one end being manually movable into said plate recesses against said spring bias for disengaging said tooth from said blade recess to enable rotation of said blade toward a closed position with said cam surface supporting said tooth against said spring bias, a stop formed on one elongate edge of said detent member spaced intermediate said tooth and pivot pin, stop engaging means on Said blade intermediate said cam surface and the cutting edge of said blade for engaging said stop in response to said blade being moved into a closed position between said plates, the outer surfaces of said plates each having a recess formed therein of annular periphery with each outer surface recess having edges extending adjacent and generally parallel to the elongate edges of the respective plate, a respective inlay received in each outer surface recess with each inlay being dimensioned to fill the respective outer surface recess and of a material differing in color from said plates, a cap extending axially from opposite ends of said detent pivot pin and encircled by a respective inlay and of a material differing in color from each inlay, and a soft metal portion carried by said spacer for engagement by the cutting edge of said blade.