A lockable tool with a sliding scale release is formed with a frame and a tool coupled to the frame with a locking mechanism to lock the tool into an extended or retracted configuration. A release mechanism is attached a scale on the side of the frame. The scale is coupled to the frame. The tool is constructed such that sliding the scale along a longitudinal axis of the frame automatically unlocks the tool from the extended or retracted configurations. The tool can open and/or close automatically. The tool, such as a knife, can swing open or extend out a front opening in the frame.

A lockable tool with a sliding scale release is formed with a frame and a tool coupled to the frame with a locking mechanism to lock the tool into an extended or retracted configuration. A release mechanism is attached a scale on the side of the frame. The scale is coupled to the frame. The tool is constructed such that sliding the scale along a longitudinal axis of the frame automatically unlocks the tool from the extended or retracted configurations. The tool can open and/or close automatically. The tool, such as a knife, can swing open or extend out a front opening in the frame.

A tool having a replaceable component is disclose. In one aspect, the tool has a handle and an armature rotatably coupled to a first end of the handle. The armature is configured to be disposed at least partially within a cavity of the handle in a first position and extended outside of the handle in a second position. In another aspect, the tool is removably coupled to a distal end of the handle extending generally in the same longitudinal direction as the handle. A tool is removably coupled to the handle in an improved manner that optimizes safety and efficiency.

A tool having a replaceable component is disclose. In one aspect, the tool has a handle and an armature rotatably coupled to a first end of the handle. The armature is configured to be disposed at least partially within a cavity of the handle in a first position and extended outside of the handle in a second position. In another aspect, the tool is removably coupled to a distal end of the handle extending generally in the same longitudinal direction as the handle. A tool is removably coupled to the handle in an improved manner that optimizes safety and efficiency.

A box top opener employs a trapezoidal ceramic blade having a cutting edge which is positionable at multiple positions. A knob is rotatable to extend and retract the blade. A guide projects from a front of the cutter body to provide a guide surface engageable against the top of a box. In one embodiment, a blade carrier has a follower which traverses a spiral track for displacing the blade.

A utility knife includes a body having a handle portion and a head portion, the handle portion having a plurality of recesses formed in the handle portion. Each of the recesses is capable of receiving at least one replacement blade. A grip is pivotally attached to the handle portion and configured to be positioned in an open position or a closed position, the grip in the open position providing access to the at least one replacement blade. A blade carrier is pivotally coupled to the body, the blade carrier having a post and being rotatable between a closed position and an open position. An active blade is received by the post of the blade carrier such that the post extends into an opening of the active blade.

A utility knife includes a body having a handle portion and a head portion, the handle portion having a plurality of recesses formed in the handle portion. Each of the recesses is capable of receiving at least one replacement blade. A grip is pivotally attached to the handle portion and configured to be positioned in an open position or a closed position, the grip in the open position providing access to the at least one replacement blade. A blade carrier is pivotally coupled to the body, the blade carrier having a post and being rotatable between a closed position and an open position. An active blade is received by the post of the blade carrier such that the post extends into an opening of the active blade.

The present invention is a new-type kitchen cutting tool suitable to be used in households, canteens, restaurants etc. It is an entirely-new multi-edge protective cutting tool consisting of several blade units and the supporting cutting tool holder for holding the blade unit, used for cutting the food material into slices, shreds and dices. The blade unit may be changed so that the food material may be cut into slices, shreds and dices with different sizes and thicknesses. The cutting tool edge, the thin thread functioning as the cutting tool edge and the chopping board may be protected through the combination of the protective plate and the elastic blade or the thin thread, greatly extending their service life. The present invention is featured as easy operation, convenient, safe, high efficiency, raw material-, energy- and time-saved, wide application range and good quality of processed products.

A utility instrument is in the form of a cutting tool suitable for fitting onto a user's finger. The tool has a blade and a sheath, both coupled to a mounting structure. The blade and sheath are pivotable with respect to each other. A user can wear the tool on a finger about a finger joint. The user can bend the finger to set the tool to an open condition to expose the blade for use, and can stretching the finger to set the tool to a closed condition to safely shade the blade using the sheath. The tool may further have a housing for fully receiving the blade. The blade may extend out of the housing for use, and may be retracted into the housing for safety.