摘要:
There is disclosed a cutting tool having a blade coated on one side with a hard coating having a laminar or layered microstructure. The coating tends to wear evenly and smoothly, thereby keeping a cutting edge of the cutting tool smooth. Furthermore, by coating the cutting edge on one side only, the cutting edge becomes self-sharpening. The coating preferably includes at least one layer made of tungsten carbides substantially or entirely free of metallic tungsten.
摘要:
Multi-blade razors are provided, having blades with differing properties. In one aspect, a razor is provided that includes a safety razor blade unit (1) comprising a guard (2), a cap (3), and first (11), second (12) and third (13) blades with parallel sharpened edges located between the guard and cap with the first blade closest to the cap, the third blade furthest from the cap, and the second blade disposed between the first and third blades, the blades having first, second and third tip radii, respectively, at least two of the three blades having different tip radii, and at least two of the blades having different coefficients of friction.
摘要:
A process for applying a coating containing a fusible material to a cutting edge of a cutting tool includes heating the fusible material to fuse the same, the heating being provided by microwave energy.
摘要:
The invention relates to a cutting member (7) for use in a device for shaving hair. The cutting member comprises a metal substrate (15) which is provided with a cutting edge (9). At least a portion of the substrate including the cutting edge is provided with a protective coating (19). According to the invention the coating (19) comprises a plurality of stacked pairs (21) of layers, wherein each pair of layers comprises a first layer (23) mainly comprising carbon (C) and a second layer (25) mainly comprising a metal, and wherein each pair of layers has a thickness (TP) between 1 and 10 nm. The second layer preferably comprises Cr, Nb, Mo, Ti, V, or W. As a result, the coating has a superlattice structure which provides the coating with physical properties which are superior to the properties of the individual materials of the layers. In an embodiment wherein the second layer comprises Cr and each pair (21) of layers has a thickness of 1.8 nm, the coating (19) has a hardness that is approximately four times the hardness of Cr and provides a coefficient of friction between the cutting member (7) and the hair to be shaved which is considerably lower than the coefficient of friction which would be obtained without the coating.
摘要:
A cutting insert, particularly a razor blade or surgical blade, comprises a layer of diamond (10) having a cutting edge (12) defined at the intersection to two converging surfaces (14, 16), the converging surfaces being coating with a layer (18) of diamond-like carbon (DLC).
摘要:
Methods of manufacturing razor cartridges are provided. One method includes loading a support portion of a supported blade into an elongated blade slot defined by a core member, the core member being configured to define a portion of a molding cavity defining the shape of the cartridge housing; and delivering a resin to the molding cavity to form the housing and capture a portion of the blade in the resin. In another method, a plurality of razor cartridges are manufactured substantially simultaneously by (a) removably mounting each blade on a core member; (b) placing each core member in a molding cavity; and (c) delivering a resin to the molding cavities to form at least a portion of the cartridge housing and capture a portion of the blade in the resin. In other methods a flexible region is provided adjacent the blade ends by: (a) delivering a compliant material to the molding cavity to capture at least the ends of the blade; (b) placing the blade and molded compliant material in a second molding cavity defining the shape of the molded housing; and (c) delivering a resin to the second molding cavity to form the molded housing, or by (a) providing coring areas in the molding cavity beyond each of the blade ends, configured to provide a flexible region of plastic adjacent each blade end in the finished product; and (b) delivering a resin to the molding cavity. In some methods, the resin is delivered through a gate that is positioned so that a substantial portion of the resin flow goes by the blade ends before the molding cavity is filled.
摘要:
A conductive, non-stick coating (62) is provided using a ceramic material which is conductive, flexible and provides a surface which exhibits the property of lubricity. A room or near room temperature manufacturing process produces a coating of titanium nitride on a substrate, where the coating is amorphous if the substrate is a solid material including plastics, composites, metals, magnets and ceramics, enabling the substrate to bend without damaging the coating. The coating can also be applied as a conformal coating on a variety of substrate shapes, depending upon the application. The coating is biocompatible and can be applied to a variety of medical devices.
摘要:
A blade (1) with improved sharpness and durability is disclosed. The blade includes a base plate (3) having an edge and a coating layer (6) for coating the edge. The coating layer is formed of a material including metal, and a tip of the coating layer (2a) is sharpened. It is preferred that an angle (βa) between two tapered surfaces (7a, 8a) be between 15 to 45 degrees.