Pocket-knife

Abstract

Disclosed is a pocket-knife mainly including a handle consisting of two side members which together define a cavity at one side of the handle to receive a blade therein. The blade is pivotally connected at a rear portion to a front portion of the handle by a pivotal pin and can be extended from the handle to an open or operative position or be folded toward the handle to a closed or storage position. A releasable locking means is disposed between the two side members for locking the blade in the open position. The pocket-knife is characterized in several rotatable balls spaced around the pivotal pin and contacting with side surfaces of the rear portion of the blade, allowing the blade to be smoothly extended or folded with help of the rotatable balls. Two spring-supported compressing balls are further attached to the inner surfaces of the two side members such that the compressing balls engage with two ends of a round through hole formed on the rear portion of the blade when the blade is folded and received in the cavity of the handle, retaining the blade in the closed position without easily coming out of the handle even when the pocket-knife collides with something or falls accidentally.

Dependencies are inferred from the claim text.