Abstract: A sheath for a folding tool such as a folding knife that is variably positionable during use. A variably positionable knife, according to the present invention, includes a sheath formed with a cavity. At least one rail is formed in the cavity. A chamber juxtaposed to the cavity also is formed in the sheath. The chamber is substantially hollow, and is formed to allow removable insertion of a locking tongue. The locking tongue includes a dome segment that applies pressure on the rail. A disk is included. The disk is rotatably mountable on the sheath, and includes a plurality of pegs. A hole is formed in for insertion of a connector. A groove is formed in the disk. In addition, the sheath includes a plug formed with a slot. An elastic o-ring is placed in both the groove and slot. The sheath also includes a block formed with a plurality of apertures in which the pegs are positionable. A band is engaged with the block for securing the sheath on a user.

Abstract: An apparatus and method for controlling use of a knife is provided that includes a positionable detent mechanism. The detent mechanism is provided with a plate fixedly attached to a sheath. A hollow post with internal threads is inserted into the plate. A cavity is formed in the plate for holding a ball bearing and a wafer. The positionable detent mechanism also includes a disk with an orifice at the center that can be positioned over the post. Pegs are installed on the disk. Also, the disk includes a tapped hole and cap. A sheath is connected to the detent mechanism for holding the knife. A block is connected to the detent mechanism for orienting the sheath. A clip is provided for securing the apparatus on a belt or other object.