Abstract: Disclosed is a multistage pocket-knife being characterized in a pair of spring-supported balls rotatably received in ball holes formed on two side members of a knife handle and through holes formed on two lining members positioned adjacent to the side members. A blade of the knife is formed with several round holes near a rear edge thereof. Whereby, when the blade is in a folded position in the handle, the pair of balls extend a part thereof into one of the round holes on the blade and thereby firmly hold the blade in place without easily turning out of the handle even when the knife collides with something or falls accidentally. And, when the blade is in a process of extending or folding, the pair of balls engage into other round holes sequentially, permitting the blade to be safely extended or folded in more than one stage.

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.

Abstract: Disclosed is a knife with lighting fixture which mainly consists of a pair of cases, a pivotally turnable knife, and a pivotally turnable supporting plate. The supporting plate has a cell, a bulb, and a push button supported thereon. The push button is slightly projected from one of the case so that a depression of it may lighten the bulb to shine toward the knife for convenient use in a dark place. The supporting plate may be easily turned out of the cases for mounting a new cell and/or a new bulb when necessary.