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.

This application relates to a method of manufacturing a knife using a multilayer material. In one aspect, the method includes preparing a multilayer material for manufacturing a knife, and heating and then forging the multilayer material to form a knife-shaped structure including a blade part and a handle part. The method also includes grinding the blade part to form a sharpened knife-edge and applying mud, including kaolin and white clay, to an entire surface of the knife-shaped structure and removing the mud applied to the blade part. The method further includes heating the knife-shaped structure applied with the mud, and quenching the heated knife-shaped structure through oil-cooling. The method further includes etching a surface of the quenched knife-shaped structure to form a pattern on the surface and grinding the surface-etched knife-shaped structure to form a knife having a final shape.

This application relates to a method of manufacturing a knife using a multilayer material. In one aspect, the method includes preparing a multilayer material for manufacturing a knife, and heating and then forging the multilayer material to form a knife-shaped structure including a blade part and a handle part. The method also includes grinding the blade part to form a sharpened knife-edge and applying mud, including kaolin and white clay, to an entire surface of the knife-shaped structure and removing the mud applied to the blade part. The method further includes heating the knife-shaped structure applied with the mud, and quenching the heated knife-shaped structure through oil-cooling. The method further includes etching a surface of the quenched knife-shaped structure to form a pattern on the surface and grinding the surface-etched knife-shaped structure to form a knife having a final shape.

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 method for treating a knife cutting edge with a laser deposition (sintering) process using a composition coating such as a diamond powder or a substance above 5 on the Mohs scale of mineral hardness. The coating providing an abrasion resistant cutting edge and creates a differential hardness on the total cutting edge. The differential hardness extends the cutting ability of the knife through a wear-resistant surface on a treated surface and a faster wear on an untreated surface causing the cutting edge to be self sharpening as the untreated surface wears away.

A blender blade formed of titanium or titanium alloy is described herein. The blender blade comprises a central portion and one or more blade wings extending therefrom. Each blade wing comprises a leading edge, wherein the leading edge is work hardened to cause the leading edge to have a first hardness which is harder than a second hardness of the central portion. The central portion is in an annealed condition. The first hardness is in a range of about 40-50 HRC, the second hardness is in a range of about 20-30 HRC. Subsequent to work hardening, the leading edge can undergo nitriding and/or layer deposition.

A system for generating rules inserted into at least one pattern board including: a controller configured to generate at least one shape diagram, the controller also configured to determine number and measurement of crease rules to be generated based on the at least one shape diagram; a cutting station configured to receive and cut a first crease rule into the number and measurement of the crease rules; and a sorter configured to receive the crease rules from the cutting station and sort the crease rules according to the measurement of the crease rules, wherein the sorted crease rules are inserted into each of the at least one pattern board along with a cutting rule shaped by each of at least one bender.

A method for treating a knife cutting edge with a laser deposition (sintering) process using a composition coating such as a diamond powder or a substance above 5 on the Mohs scale of mineral hardness. The coating providing an abrasion resistant cutting edge and creates a differential hardness on the total cutting edge. The differential hardness extends the cutting ability of the knife through a wear-resistant surface on a treated surface and a faster wear on an untreated surface causing the cutting edge to be self sharpening as the untreated surface wears away.

An exemplary hand-held, power operated rotary knife dermatome comprises a blade housing assembly and a depth gauge assembly. The blade housing assembly includes an annular blade housing and a blade lock ring for rotatably supporting an annular rotary knife blade. The annular blade housing includes a shield extending radially inwardly from a blade receiving body and including an inner wall defining a tissue directing surface, the tissue directing surface including a first tissue guide surface extending upwardly from a lower end of the shield, the first tissue guide surface extending substantially parallel to the blade housing axially extending center line. The blade receiving body includes an annular blade channel extending axially upwardly from a lower surface of the blade receiving body, a bearing surface axially spaced from a lower surface of the blade receiving body, and a threaded portion formed on the outer surface of the annular blade housing.

Method and strip steel knife from a steel strip having a bainite and decarburized surface. The steel strip has a generally rectangular cross-section, and the method includes machining a plurality of beveled surfaces in a region of a longitudinal edge of the steel strip to create at least a cutting surface defining a longitudinal cutting edge; first hardening at least a part of the cutting surface to form a first cutting edge region of the longitudinal cutting edge; smoothing the cutting surface of at least the first cutting edge region toward the longitudinal cutting edge; and at least one further hardening in the first cutting edge region to form a distal cutting edge region of the longitudinal cutting edge within the first cutting edge region having an increased material hardness with respect to the first cutting edge region located outside the distal cutting edge region.