A utility knife includes a knife body that has a knife frame and an ergonomic outer casing attached to the knife frame. The utility knife also includes a retractable blade holder that holds a blade. The retractable blade holder extends out of and retracts into the knife body and may also be selectively oriented at a first angle and a second angle relative to a longitudinal axis of the knife body.

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.

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.

The invention relates to a coconut opener, which comprises a barrel-shaped main body, a blade extending outward from the periphery of the main body and a connecting rod connecting the main body. The main body has an opening end and a tail hole, the diameter of the opening end is larger than the diameter of the tail hole; the blade is connected with the opening end; the connecting rod is installed on one side of the main body. The structure of the coconut opener mentioned above is simple. The coconut shell can be cut with the blade through tapping the main body. The cone part of the coconut can be pierced through the tail hole, and the main body with the cut coconut shell is pulled out from the coconut through the connecting rod, so as to realize the opening of the coconut with high efficiency, easy operation, and no scratch to the operator.

The invention relates to a coconut opener, which comprises a barrel-shaped main body, a blade extending outward from the periphery of the main body and a connecting rod connecting the main body. The main body has an opening end and a tail hole, the diameter of the opening end is larger than the diameter of the tail hole; the blade is connected with the opening end; the connecting rod is installed on one side of the main body. The structure of the coconut opener mentioned above is simple. The coconut shell can be cut with the blade through tapping the main body. The cone part of the coconut can be pierced through the tail hole, and the main body with the cut coconut shell is pulled out from the coconut through the connecting rod, so as to realize the opening of the coconut with high efficiency, easy operation, and no scratch to the operator.

A tool, and a method using the tool, for skinning game animals. Specifically, the tool relates to a curved blade knife, sharpened on the curved, top edge, and possessing a spherical or non-spherical structure at the tip. The tool is used by forming a cut through the soft skin of a game animal, inserting the spherical or non-spherical structure through the cut, and pushing or pulling the blade such that the sharpened curved, top edge cuts through the skin and connective tissue. This tool and method takes advantage of the fact that the spherical or non-spherical structure at the tip of the blade is retained inside the skin and connective tissue of the game animal and the blade is automatically properly positioned to cut the skin of the game animal.

A tool, and a method using the tool, for skinning game animals. Specifically, the tool relates to a curved blade knife, sharpened on the curved, top edge, and possessing a spherical or non-spherical structure at the tip. The tool is used by forming a cut through the soft skin of a game animal, inserting the spherical or non-spherical structure through the cut, and pushing or pulling the blade such that the sharpened curved, top edge cuts through the skin and connective tissue. This tool and method takes advantage of the fact that the spherical or non-spherical structure at the tip of the blade is retained inside the skin and connective tissue of the game animal and the blade is automatically properly positioned to cut the skin of the game animal.

A ceramic cutting tool may include a blade body including zirconium oxide as a primary component of the blade body, wherein the blade body includes particles including any one of aluminum oxide, silicon carbide, or silicon nitride as a primary component of the particles, and wherein the blade body includes a blade part, a plurality of the particles are partially embedded and exposed on a top part of the blade part, and wherein the plurality of the particles cohere to each other to form a plurality of aggregates.

A ceramic cutting tool may include a blade body including zirconium oxide as a primary component of the blade body, wherein the blade body includes particles including any one of aluminum oxide, silicon carbide, or silicon nitride as a primary component of the particles, and wherein the blade body includes a blade part, a plurality of the particles are partially embedded and exposed on a top part of the blade part, and wherein the plurality of the particles cohere to each other to form a plurality of aggregates.

A recip blade has a blade body including a cutting edge and a tang located at one end of the blade body. The tang defines an arcuate cross-sectional shape or is laminated to increase the overall thickness of the tang and, in turn, enhance the rigidity of the blade and/or reduce oscillation or whipping of the blade during cutting.