The present invention discloses a cutting tool with a cutting edge, including a base and a cutting edge, where the cutting edge includes a laser cyclic heat treatment hardened layer, and the hardness of the hardened layer is higher than the hardness of the base. The present invention also discloses a method for manufacturing the foregoing tool.

The present invention discloses a cutting tool with a cutting edge, including a base and a cutting edge, where the cutting edge includes a laser cyclic heat treatment hardened layer, and the hardness of the hardened layer is higher than the hardness of the base. The present invention also discloses a method for manufacturing the foregoing tool.

A cooking knife includes: a handle, a plurality of blades and a sheath. The plurality of blades is disposed on the first portion and the second portion of the handle. The sheath includes two sheath shells and a pivot shaft, the two sheath shells being pivotally connected to each other by the pivot shaft in such a manner that the two sheath shells pivotally rotate by the pivot shaft in reverse direction to get close to each other or draw away from each other.

A cooking knife includes: a handle, a plurality of blades and a sheath. The plurality of blades is disposed on the first portion and the second portion of the handle. The sheath includes two sheath shells and a pivot shaft, the two sheath shells being pivotally connected to each other by the pivot shaft in such a manner that the two sheath shells pivotally rotate by the pivot shaft in reverse direction to get close to each other or draw away from each other.

A kitchen knife includes a spine-side member located on a spine side; and a blade-side member located on a blade side and composed of a stacked member including a stack of two or more different metallic materials. The blade-side member is thinner than the spine-side member, and a pattern is formed on the blade-side member by processing the blade-side member into a curved shape at least at a part thereof as viewed from a cutting edge side, then joining the blade-side member to the spine-side member, and performing at least one of grinding and polishing after the joining.

A kitchen knife includes a spine-side member located on a spine side; and a blade-side member located on a blade side and composed of a stacked member including a stack of two or more different metallic materials. The blade-side member is thinner than the spine-side member, and a pattern is formed on the blade-side member by processing the blade-side member into a curved shape at least at a part thereof as viewed from a cutting edge side, then joining the blade-side member to the spine-side member, and performing at least one of grinding and polishing after the joining.

The present disclosure relates to safety blades for use in utility knives, related assemblies and methods of manufacturing. More specifically, the present disclosure relates to safety blades for use in utility knives, related assemblies and methods of manufacture which limit user exposure to associated cutting edges.

The present disclosure relates to safety blades for use in utility knives, related assemblies and methods of manufacturing. More specifically, the present disclosure relates to safety blades for use in utility knives, related assemblies and methods of manufacture which limit user exposure to associated cutting edges.

A pattern knife assembly includes: a blade portion formed by forging and having a rear end integrally formed with a connecting sleeve, and a sheathing hole formed at a rear end of the connecting sleeve; and a tang portion formed by a casting or cutting process and having a tang hidden in a handle and integrally formed with a connector at the front end of the tang. The connector of the tang portion is inserted into the sheathing hole of the connecting sleeve of the blade portion and the connecting sleeve is welded to the connector, so that the connecting sleeve covers the connector and is exposed from the front end of the connecting sleeve to achieve the effects of combining the blade with the tang securely, providing a manufacturing process suitable for mass production, and showing the grain of the pattern steel in the exposed steel portion.

A pattern knife assembly includes: a blade portion formed by forging and having a rear end integrally formed with a connecting sleeve, and a sheathing hole formed at a rear end of the connecting sleeve; and a tang portion formed by a casting or cutting process and having a tang hidden in a handle and integrally formed with a connector at the front end of the tang. The connector of the tang portion is inserted into the sheathing hole of the connecting sleeve of the blade portion and the connecting sleeve is welded to the connector, so that the connecting sleeve covers the connector and is exposed from the front end of the connecting sleeve to achieve the effects of combining the blade with the tang securely, providing a manufacturing process suitable for mass production, and showing the grain of the pattern steel in the exposed steel portion.