The Gillette Company

Analog Devices,inc.

Kenneth James Skrobis

Yongqing Ju

Joseph Allan DePuydt

Bin Shen

William Owen Jolley

John Joseph Nisby

Ronald Richard Duff, Jr

Matthew Robert Stone

Jason Scott Slattery

Neville Sonnenberg

John Lawrence Maziarz

Oliver Heinz Claus

Thorsten Knobloch

Richard H Morrison, Jr

John Madeira

Steve S Hahn

Krassimir Grigorov Marchev

Alfred Porcaro

Jeffrey Stuart Parker

Joe David Lussier

Sumit Majumder

Eric Liu

Ronald J Swanson

Geoffrey Thomas Haigh

Ashok Bakul Patel

Ming Laura Xu

Charles Samuel White

Laura Xu

Joseph Allan Depuydt

Jeffrey S Parker

Roanld Richard Duff

A razor cartridge is provided having a housing and a blade assembly mounted to the housing. The blade assembly has at least one razor blade defined by a substrate having a first portion and a second portion. The first portion has first and second outer surfaces. The second portion has first and second sections separated by a split line. The first section has a first facet and an end facet. The second section has an end facet. The end facets of the first and second sections may converge at a tip to define a cutting edge. A shoulder may be positioned between the first facet and the end facet of the first section and define a skin-contacting surface.

Razor cartridge

A razor cartridge having a first blade proximal to a front of the cartridge and having one or more first coatings disposed thereon, a second blade proximal to a back of the cartridge, the second blade having one or more second coatings disposed thereon, wherein a thickness of at least one of the one or more first coatings disposed on the first blade is less than a thickness of at least one of the one or more second coatings disposed on the second blade.

Razors and razor cartridges

A razor blade is provided comprising a substrate comprising a first portion and a second portion. The first portion may comprise first and second generally parallel outer surfaces. The second portion may comprise first and second sections separated by a split line. The first section may comprise a first facet extending directly from the first outer surface of the first portion and an end facet extending directly from the first facet. The second section may comprise an end facet. The end facets of the first and second sections may converge at a tip to define a cutting edge. The split line may pass through the tip and is generally parallel with and extends between the first and second outer surfaces of the first portion.

Razor blade

Razors cartridges including a guard, a cap, and at least two blades with parallel sharpened edges located between the guard and cap are provided. The first blade has a first color and a second blade has a second color, where the first color is different than the second color. The blade color corresponds to an attribute of the blade (e.g., low cut force) that the color is disposed on or an attribute of the razor cartridge (e.g., sensitive skin). The color of the blade corresponds to a target user of the razor cartridge (e.g., male or female). The first blade defines a blade edge near or nearest the guard and a second blade defines a blade edge near or nearest the cap.

Razors and razor cartridges with colored blades

A razor blade including: a substrate having a tip portion including a tip region, a blade body including a base, and first and second outer sides disposed opposite a split line of the substrate that converge at a tip; and first and second coatings disposed substantially on the first and second outer sides, respectively. Also provided is a method of coating the razor blade, including: applying a first coating to at least a portion of the first outer side; and applying a second coating to at least a portion of the second outer side. The first and second coatings each extend from the tip region toward the base and are substantially different, as compared to each other.

Coatings for a razor blade

A razor blade including a substrate with a coating joined to the substrate defining a coated blade. The coated blade including a cutting edge being defined by a blade tip having a tip radius of from 50 to 350 angstroms. The coated blade having a pair of first facets extending from the blade tip and a pair of second facets extending from the respective first facets, a facet angle from 90&#xb0; to 135&#xb0;, a facet width from 0.38 micrometers to 0.65 micrometers a wedge angle from 5&#xb0; to 30&#xb0;, and a thickness of between 0.8 and 1.5 micrometers measured at a distance of 1 micrometer from the blade tip.

Razor blades having a wide facet angle

A razor blade including: a substrate having a tip portion including a tip region, a blade body including a base, and first and second outer sides disposed opposite a split line of the substrate that converge at a tip; and first and second coatings disposed substantially on the first and second outer sides, respectively. Also provided is a method of coating the razor blade, including: applying a first coating to at least a portion of the first outer side; and applying a second coating to at least a portion of the second outer side. The first and second coatings each extend from the tip region toward the base and are substantially different, as compared to each other. One or both of the first and second coatings comprise a plurality of layers of material.

Multi-layer coatings for a razor blade

A razor blade having a substrate with a cutting edge being defined by a sharpened tip is provided where the substrate is comprised of a molybdenum (Mo) content of about 1.6% to about 5% by weight of composition and thicknesses of 1.60-1.75 &#x3bc;m and 9.25-10.00 &#x3bc;m measured at a distance of 4 and 40 &#x3bc;m from the blade tip, respectively. This thickness ratio is between 0.165-0.185. The substrate thickness is about 2.70-3.00 &#x3bc;m at 8 &#x3bc;m from the blade tip, about 4.44-5.00 &#x3bc;m at 16 &#x3bc;m from the blade tip with a thickness ratio measured at 4 &#x3bc;m and 8 &#x3bc;m between 0.56-0.62, and a thickness ratio measured at 4 &#x3bc;m and 16 &#x3bc;m between 0.32-0.40. The edge shape may be defined by equation w=adwith 'a' between 0.50-0.62 and 'n' between 0.76-0.80. A semi-included angle less than 7&#xb0; is measured at a distance of 40 &#x3bc;m or greater from the blade tip. This substrate will have substantially no cracks.

The present invention relates to razor blade cutting edges and methods of producing edges exhibiting improved shave performance longevity and lower cutting forces. Conventional razor blades have increasing cutting forces with use due to the outer coating wear and adhesion loss. Blade edges produced according to the novel process exhibit significantly lower cutting forces when subjected to wool felt cutting shaving simulation, which correlates to more comfortable shaves initially and over the life of the blades. The present invention treats razor blade edges having a first adherent polyfluorocarbon coating with a first solvent to partially remove the polyfluorocarbon coating, adds a second polyfluorocarbon coating, heats, and treats the blade edge with a second solvent providing a final blade edge having a thin, uniform polyfluorocarbon coating. Preferred solvents include perfluoroalkanes, perfluorocycloalkanes, and perfluoroaromatic compounds having a critical temperature or boiling point above the dissolution temperature for the polyfluorocarbon in the solvent.

Method of treating razor blade cutting edges

A razor blade having a substrate with a cutting edge being defined by a sharpened tip. The substrate has thicknesses of 1.60-1.75 micrometers and 9.25-10.00 micrometers measured at a distance of four and forty micrometers from the blade tip, respectively. A ratio of the thickness measured at four micrometers to the thickness measured at forty micrometers is between 0.165-0.185. The substrate thickness is about 2.70-3.00 micrometers at eight micrometers from the blade tip, about 4.44-5.00 micrometers at sixteen micrometers from the blade tip with a thickness ratio measured at four micrometers and eight micrometers between 0.56-0.62, and a thickness ratio measured at four micrometers and sixteen micrometers between 0.32-0.40. The blade edge shape is defined by equation w=adwhere 'a' is between 0.50-0.62 and 'n' is between 0.76-0.80. An included angle of less than 7&#xb0; is measured at a distance of forty micrometers or greater from the blade tip. A nitrided substrate may also be provided.

Razor blades

A razor blade that includes a substrate with a cutting edge, the substrate includes (a) a thin-film of a first material disposed thereon, the thin-film having a thickness less than 1 &#x3bc;m; (b) a mixed nitride-thin-film interregion disposed at or adjacent a surface of the thin-film and a surface of the substrate; and (c) a nitride region disposed adjacent the mixed nitride-thin-film interregion.

Razor blade coating

Razors cartridges including a guard, a cap, and at least two blades with parallel sharpened edges located between the guard and cap are provided. A first blade defines a blade edge nearest the guard and a second blade defines a blade edge nearest the cap. The first blade has a cutter force less than the cutter force of the second blade.

A razor blade having a substrate with a cutting edge being defined by a sharpened tip. The substrate has a thickness of between about 1.3 and 1.6 micrometers measured at a distance of four micrometers from the blade tip, a thickness of between about 2.2 and 2.7 micrometers measured at a distance of eight micrometers from the blade tip, a thickness of between about 3.8 and 4.9 micrometers measured at a distance of sixteen micrometers from the blade tip, a ratio of thickness measured at four micrometers from the blade tip to the thickness measured at eight micrometers from the blade tip of at least 0.55 and a ratio of thickness measured at four micrometers from the blade tip to the thickness measured at sixteen micrometers from the blade tip of at least 0.30.

An improved micro-machined relay is disclosed. The relay includes a micro-machined beam capable of carrying an electric signal and having a contact point on a closure side of the beam. The beam is electrically coupled to a first electrical transmission path and suspended above a second electrical transmission path. An insulation layer resides on a portion of the closure side of the beam and an electrical conductor is coupled to a least a portion of the insulation layer. A potential creator creates a potential between the electrical conductor and the potential creator that is capable of deflecting the beam, so that the contact point comes into contact with the second electrical transmission path. In such an embodiment, the potential creator need not account for the possible signal in the transmission path because the potential creator, which may be a voltage source, is decoupled from the transmission path.

Growing community of inventors

Maynard, MA, United States of America

Kenneth James Skrobis