| 摘要 |
A folding blade knife is disclosed in which the knife blade is releasably lockable in a plurality of angular positions relative to a knife handle. The folding knife blade has a polygonal aperture and the knife handle has a circular opening as well as an aligned polygonal recess. A one piece lock and release element operated by push button action includes a cylindrical part engaging in the circular opening of the handle and a polygonal part engageable totally in the polygonal aperture of the blade or partly in such aperture and partly in the polygonal recess of the handle. A spring biases the one piece lock and release element toward a locking position relative to the blade and handle.
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