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 utility knife has a disposable blade cartridge in its handle that has new and used blade compartments. Fresh blades are disposed in the new blade compartment and one end of each is advanced one at a time substantially out of the compartment into operative position by a carrier that is controlled by a push button assembly. When the active blade is to be replaced, it is moved by the carrier into the used blade compartment, and a new blade may then be withdrawn from the new blade compartment into the operative position. The cartridge may be reversed when the one end of all the blades in the new blade compartment are used, placing what was the used blade compartment at the front, and the unused end of each blade may be advanced into the operative position. When all are used, a new cartridge may replace the used cartridge.

A knife (10) having a body (16) with a handle (14) and a blade (12), the blade having two sides (22), an upper edge (18) and a sharp lower edge (20) for cutting, the body having an upper side which includes at least two indentations (42, 48) which are spaced apart from one another, wherein at least one of the indentations is formed in the upper edge of the blade.

A knife (10) having a body (16) with a handle (14) and a blade (12), the blade having two sides (22), an upper edge (18) and a sharp lower edge (20) for cutting, the body having an upper side which includes at least two indentations (42, 48) which are spaced apart from one another, wherein at least one of the indentations is formed in the upper edge of the blade.

A new and improved cutting instrument is provided having an enhanced coating. The coating includes titanium, chromium, nitrogen and carbon elements and provides increased wear resistance. The coating can be applied to a variety of metal and non-metallic substrates, which include scissors and knife blades.

A new and improved cutting instrument is provided having an enhanced coating. The coating includes titanium, chromium, nitrogen and carbon elements and provides increased wear resistance. The coating can be applied to a variety of metal and non-metallic substrates, which include scissors and knife blades.

A Hand Tool for Removing Nopal-Cactus Thorns is similar in shape to a spoon. This hand tool has a Hole shaped as a polygonal star in its head with a narrow area surrounding that hole for removing the skin and the superficial Thorns of the Nopal Petal by repeatedly rubbing the utensil against the surface of the Petal in a longitudinal fashion, without need of sharpening the edge of the Hole. A Secondary Hole for removing the hardest Thorns and those in the edges and corners of the Nopal Petals and a Corner Blade for cutting it in small squares or small stripes are also present in the tool.

A multifunctional cutter includes a body and a blade received by the body. The body has an end surface. The end surface extends on a reference plane. The blade has a cutting edge including a first cutting edge portion and a second cutting edge portion. The blade in a use position includes the first and the second cutting edge portions disposed outside of the body. The first cutting edge portion extends arcuately and is concave. The second cutting edge portion extends linearly and is straight. The first cutting edge portion has an end point adjacent to the second cutting edge portion. A tangent line to first the cutting edge portion at the end point intersects with the reference plane. The tangent line and the reference plane defines a first included angle which is less than 90 degrees.

A cutter according to one embodiment of the present disclosure includes a blade body that includes a base body portion and a cutting edge portion disposed along an end portion of the base body portion and connected to the end portion. The base body portion contains a first metal. The cutting edge portion contains a second metal and a plurality of hard particles having hardness higher than that of the second metal. A cutter according to another embodiment of the present disclosure includes a blade body that includes a base body portion and a cutting edge portion disposed along an end portion of the base body portion and connected to the end portion. The base body portion contains a first metal as a primary component. The cutting edge portion contains, as a primary component, a second metal having hardness lower than that of the first metal.