Of Specific Material Patents (Class 30/346.53)
  • Patent number: 10675772
    Abstract: A razor blade having an improved lubricious material deposited thereon and a method of making a razor blade for a razor cartridge having such a material disposed thereon are described herein. A novel printing process and printing material are provided where at least one printing material is deposited on one or more razor blades via a printing process which includes one or more print heads for printing the at least one printing material and forming at least one printed object on a tip or one or more sides of the razor blade. The printing material may comprise about of about 0.25% solid to about 50% solids by weight of composition of telomer and further desirably comprises glycerol and/or an antifoam material. Optimizing coverage of the printing material may be achieved by changing materials, print heads, the firing frequency of the print head or angling or rotating the print heads.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: June 9, 2020
    Assignee: The Gillette Company LLC
    Inventors: Marco Fontecchio, John Chadwick, Andrew Charles Nicholas, Jeffrey Richard Holley
  • Patent number: 10549438
    Abstract: 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° to 135°, a facet width from 0.38 micrometers to 0.65 micrometers a wedge angle from 5° to 30°, and a thickness of between 0.8 and 1.5 micrometers measured at a distance of 1 micrometer from the blade tip.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: February 4, 2020
    Assignee: The Gillette Company LLC
    Inventors: Kenneth J. Skrobis, Jeffrey S. Parker, Bin Shen, Matthew R. Stone, John J. Nisby, Jason S. Slattery, Yongqing Ju
  • Patent number: 10384360
    Abstract: A razor cartridge, a razor blade, and a process of producing a razor cartridge and razor blade is provided including at least one blade positioned between the guard and the cap where the visible surface of the at least one razor blade includes a printed object wherein the printed object has a height dimension of from about 0.04 mm to about 0.60 mm. The printed object may extend continuously along the length of the razor blade and/or may have multiple portions having a comb-like structure. The printed object appears as a solid object to a viewer's naked eye. The solid object includes a plurality of printed ink dots not visible to the viewer's naked eye. The printed object of flexible, polymer ink may act as a guard element on the razor blade which helps with glide and to manage a user's skin (e.g., bulge) during shaving.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: August 20, 2019
    Assignee: The Gillette Company LLC
    Inventor: Andrew Charles Nicholas
  • Patent number: 10329509
    Abstract: A low-friction coating includes: an aliphatic hydrocarbon group showing a peak in a region of 2,900 cm?1 to 3000 cm?1 in an infrared absorption spectrum; a carbonyl group showing a peak in a region of 1,650 cm?1 to 1,800 cm?1 in an infrared absorption spectrum; an aromatic component (C7H7+) showing a peak at mass 91.1 in a positive ion spectrum obtained by TOF-SIMS; and a condensed ring based component (C9H7+) showing a peak at mass 115.2 in the positive ion spectrum obtained by TOF-SIMS.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: June 25, 2019
    Assignees: JTEKT CORPORATION, THE UNIVERSITY OF TOKYO
    Inventors: Takahisa Kato, Masataka Nosaka, Mamoru Tohyama, Atsushi Murase, Kyoko Nakai, Masahiro Suzuki
  • Patent number: 10202560
    Abstract: A low-friction coating includes: an aliphatic hydrocarbon group showing a peak in a region of 2,900 cm?1 to 3000 cm?1 in an infrared absorption spectrum; a carbonyl group showing a peak in a region of 1,650 cm?1 to 1,800 cm?1 in an infrared absorption spectrum; an aromatic component (C7H7+) showing a peak at mass 91.1 in a positive ion spectrum obtained by TOF-SIMS; and a condensed ring based component (C9H7+) showing a peak at mass 115.2 in the positive ion spectrum obtained by TOF-SIMS.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: February 12, 2019
    Assignees: JTEKT CORPORATION, THE UNIVERSITY OF TOKYO
    Inventors: Takahisa Kato, Masataka Nosaka, Mamoru Tohyama, Atsushi Murase, Kyoko Nakai, Masahiro Suzuki
  • Patent number: 9827691
    Abstract: A scribing wheel for scribing a brittle material-made substrate. A disc-shaped scribing-wheel base material in use is so designed that a mid-portion of a disc periphery has the largest diameter. A diamond film is formed on the periphery by a CVD method. The periphery is ground in the middle so that a plane including a circle defined by ridge line becomes perpendicular to the central axis of the scribing wheel.
    Type: Grant
    Filed: August 28, 2014
    Date of Patent: November 28, 2017
    Assignee: MITSUBOSHI DIAMOND INDUSTRIAL CO., LTD.
    Inventor: Naoko Tomei
  • Patent number: 9751230
    Abstract: 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=adn where “a” is between 0.50-0.62 and “n” is between 0.76-0.80. An included angle of less than 7° is measured at a distance of forty micrometers or greater from the blade tip. A nitrided substrate may also be provided.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: September 5, 2017
    Assignee: The Gillette Company
    Inventors: Kenneth James Skrobis, Bin Shen, Yongqing Ju, Matthew Robert Stone
  • Patent number: 9633815
    Abstract: A cold field emitter for emitting an electron beam for an electron beam device is described. The emitter includes an emitter tip having a tip surface; and two or more adjacent facets formed at the tip surface and having facet boundaries, each of the facets forming a recess in the emitter tip, wherein the facets are separated. An intermediate area is provided between and around the two or more adjacent facets and the intermediate area is configured for electron emission. Further, an electron beam device, a method for operating an electron beam device and a method for producing an emitter for an electron beam device is described.
    Type: Grant
    Filed: February 10, 2016
    Date of Patent: April 25, 2017
    Assignee: ICT Integrated Circuit Testing Gesellschaft für Halbleiterprüftechnik mbH
    Inventors: Pavel Adamec, Harry Kleinschmidt
  • Patent number: 9248579
    Abstract: 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.
    Type: Grant
    Filed: July 16, 2008
    Date of Patent: February 2, 2016
    Assignee: The Gillette Company
    Inventors: Joseph Allan DePuydt, Steve S. Hahn, John Madeira, Krassimir Grigorov Marchev, Kenneth James Skrobis, Neville Sonnenberg
  • Patent number: 9227223
    Abstract: The present invention provides a method for preparing a matte anti-fingerprint stainless steel decorative plate. The method comprises the steps of: 1) selecting a polymer coating material, wherein the polymer coating material is formed by mixing a film forming material, an inorganic nano-filler, a solvent and an auxiliary agent, wherein the film forming material comprises the following ingredients based on the weight ratio: 30-50 parts of acrylate composite resin, 5-20 parts of amino resin, and 5-15 parts of epoxy resin; and 1-8 parts of a matting agent and 1-8 parts of an anti-settling agent are added; and 2) performing a spray coating using the polymer coating material, wherein a coating film has a thickness of 1.5-2.5 ?m, the precision of the atomization air pressure of a spray gun is controlled at ±0.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: January 5, 2016
    Assignee: HAIMEN SENDA DECORATION MATERIAL CO., LTD
    Inventors: Lixin Huang, Liang Hong, Zhihong Sang, Gang Chen, Hui Jiang
  • Patent number: 9079321
    Abstract: 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.
    Type: Grant
    Filed: July 16, 2008
    Date of Patent: July 14, 2015
    Assignee: The Gillette Company
    Inventors: Oliver H. Claus, Joseph Allan DePuydt, Steve S. Hahn, Yongqing Ju, John Madeira, Krassimir Grigorov Marchev, Kenneth James Skrobis, Neville Sonnenberg, Charles Samuel White
  • Patent number: 9032628
    Abstract: A razor cartridge includes razor blade assemblies having an inter-blade guard attached to a side of a razor blade. The razor blade is formed from strip that is manufactured including a thermal oxidation process to form a chromium oxide layer on the side surface of the razor blade. This oxide film prevents electrochemical corrosion of the razor blade that may be visible to a user and prevents real or perceived premature failure of the razor blade and thus the razor cartridge during its extended life. The razor blade assembly may also have an array of closely spaced droplets of a liquid adapted to inhibit corrosion of the razor blade applied to the side of the razor blade visible to a user.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: May 19, 2015
    Assignee: Eveready Battery Company, Inc.
    Inventors: Wayne F Hobson, Sr., Yiming Xu
  • Patent number: 9027443
    Abstract: Razors are described herein. In some instances the razors include a safety razor blade unit that includes a guard, a cap, and at least two blades with parallel sharpened edges located between the guard and cap. A first blade defines a blade edge nearer the guard and a second blade defines a blade edge nearer the cap. The first blade has a cutter force greater than the cutter force of the second blade. In some instances the razors provide a comfortable shave having improved closeness.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: May 12, 2015
    Assignee: The Gillette Company
    Inventors: Andrew Zhuk, Weili Yu, Hoang Mai Trankiem, Neville Sonnenberg, Kevin Leslie Powell, Yiqian Eric Liu, Robert L. Lescanec, Steve S. Hahn, Joseph Allan DePuydt, Cinzia Simonis de Cloke, Alan Crook
  • Publication number: 20150047202
    Abstract: A blade assembly and razor utilizing same are provided. The blade assembly includes at least one blade and an electrode element being electrically insulated from the blade and from a skin surface contactable by the blade. The blade in combination with the electrode form hydroxyl ions near the blade edge during shaving.
    Type: Application
    Filed: August 14, 2014
    Publication date: February 19, 2015
    Inventors: Yossef Rosemberg, Mark Funt
  • Patent number: 8904650
    Abstract: The present invention relates to a cutting tool, in particular in the form of a razor blade, a scalpel, a knife, a machine knife, scissors etc., which has a synthetic diamond layer with a cutting edge. The diamond layer thereby consists of fine-crystalline diamond.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: December 9, 2014
    Assignee: GFD Gesellschaft für Diamantprodukte mbH
    Inventors: André Flöter, Stefan Strobel, Peter Gluche
  • Publication number: 20140101945
    Abstract: The invention discloses utilizing isostatic-press (IP) processes apply a polymeric material (e.g, a PTFE foil) to uncoated razor blade edges forming thin, dense, and uniform coatings on blade edges which in turn exhibit low initial cutting forces correlating with more comfortable shaves. The isostatic press may be a hot isostatic press (HIP) or a cold isostatic press (CIP) or any other isostatic press process. The HIP conditions may include an environment of elevated temperatures and pressures in an inert atmosphere. The CIP conditions may include room temperature and elevated pressure. The polymeric material may be a fluoropolymer or non-fluoropolymeric material or any composite thereof. The lower surface of the polymeric material may be modified (e.g., chemical etching) to enhance adhesion to the blade edge. Two or more layers of polymeric material of similar or different properties may be isostatically pressed onto the uncoated blades.
    Type: Application
    Filed: December 20, 2013
    Publication date: April 17, 2014
    Applicant: The Gillette Company
    Inventors: Xiandong Wang, Neville Sonnenberg
  • Publication number: 20140041239
    Abstract: The present invention generally relates to blades for utility knives, craft knives, box cutters, and other cutting tools. Specifically, this invention relates to cutting blades manufactured from ceramics.
    Type: Application
    Filed: October 8, 2013
    Publication date: February 13, 2014
    Inventors: Thomas Scimone, Scott Herbst, Alan Regala
  • Patent number: 8642122
    Abstract: The invention discloses utilizing isostatic-press (IP) processes apply a polymeric material (e.g, a PTFE foil) to uncoated razor blade edges forming thin, dense, and uniform coatings on blade edges which in turn exhibit low initial cutting forces correlating with more comfortable shaves. The isostatic press may be a hot isostatic press (HIP) or a cold isostatic press (CIP) or any other isostatic press process. The HIP conditions may include an environment of elevated temperatures and pressures in an inert atmosphere. The CIP conditions may include room temperature and elevated pressure. The polymeric material may be a fluoropolymer or non-fluoropolymeric material or any composite thereof. The lower surface of the polymeric material may be modified (e.g., chemical etching) to enhance adhesion to the blade edge. Two or more layers of polymeric material of similar or different properties may be isostatically pressed onto the uncoated blades.
    Type: Grant
    Filed: January 12, 2009
    Date of Patent: February 4, 2014
    Assignee: The Gillette Company
    Inventors: Xiandong Wang, Neville Sonnenberg
  • Patent number: 8628821
    Abstract: The invention discloses isostatic-pressing (IP) applied to polymer (e.g., PTFE) coated razor blade edges to produce thin, dense, and uniform blade edges which in turn exhibit low initial cutting forces correlating with a more comfortable shaves. The isostatic press utilized may be a hot isostatic press (HIP) or cold isostatic press (CIP) or any other isostatic press process. The HIP conditions may include an environment of elevated temperatures and pressures in an inert atmosphere. The HIP conditions may be applied to non-sintered coatings or sintered coatings or before or after a Flutec® process is applied to coatings. CIP conditions may include room temperature and elevated pressure. The polymeric material may be a fluoropolymer or a non-fluoropolymer material or any composite thereof. It may be deposited initially by any method, including but not limited to, dipping, spin coating, sputtering, or thermal Chemical Vapor Deposition (CVD).
    Type: Grant
    Filed: January 12, 2009
    Date of Patent: January 14, 2014
    Assignee: The Gillette Company
    Inventors: Xiandong Wang, Neville Sonnenberg
  • Patent number: 8522645
    Abstract: In a vacuum chamber, the edge of each blade group is subjected to an ion beam treatment under predetermined conditions using a plasma ion gun and argon as a medium, and is subjected to a plasma ion implantation of nitrogen plasma under predetermined conditions using a plasma ion implantation gun. As a result, it is possible to provide a blade member having an edge of a cutting quality enhanced by increasing the sharpness, a blade member having an edge of a rigidity enhanced by increasing the hardness, and a working apparatus capable of working those edges efficiently.
    Type: Grant
    Filed: December 24, 2008
    Date of Patent: September 3, 2013
    Assignees: Nagata Seiki Co., Ltd., Kai R&D Center Co., Ltd.
    Inventors: Kensuke Uemura, Hiroshi Ohtsubo
  • Publication number: 20130180117
    Abstract: A razor cartridge includes razor blade assemblies having an inter-blade guard attached to a side of a razor blade. The razor blade is formed from strip that is manufactured including a thermal oxidation process to form a chromium oxide layer on the side surface of the razor blade. This oxide film prevents electrochemical corrosion of the razor blade that may be visible to a user and prevents real or perceived premature failure of the razor blade and thus the razor cartridge during its extended life. The razor blade assembly may also have an array of closely spaced droplets of a liquid adapted to inhibit corrosion of the razor blade applied to the side of the razor blade visible to a user.
    Type: Application
    Filed: January 13, 2012
    Publication date: July 18, 2013
    Applicant: Eveready Battery Company Inc.
    Inventors: Wayne F. Hobson, SR., Yiming Xu
  • Publication number: 20130091710
    Abstract: Cutting members for razors are provided that have a blade portion and a base portion, the blade portion having a cutting edge region terminated at a free end thereof and an opposing non-cutting edge region, the blade portion being bent relative to the base portion in a bent portion spaced from the cutting edge region and adjacent to the non-cutting edge region, wherein the bent portion extends about 108 degrees to about 115 degrees from the base portion, the bent portion having a radius of about 0.30 mm to about 0.45 mm, at least part of the cutting member having a hardness of about hardness of about 540 HV to about 750 HV, and a thickness of the bent portion is less than the average thickness of the cutting member.
    Type: Application
    Filed: December 10, 2012
    Publication date: April 18, 2013
    Applicant: THE GILLETTE COMPANY
    Inventor: THE GILLETTE COMPANY
  • Publication number: 20130031794
    Abstract: This invention relates to a novel application of hard, low friction aluminum magnesium boride (AlMgB14, also known as BAM) based ceramic coatings to surfaces of razor components and in particular to blade edges of razor blades. On razor blade edges, these coatings may elevate blade performance, while also simplifying the manufacturing process.
    Type: Application
    Filed: July 30, 2012
    Publication date: February 7, 2013
    Inventors: Ronald Richard Duff, JR., Jeffrey Stuart Parker, Yongqing Ju, Xiandong Wang
  • Publication number: 20130014395
    Abstract: 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 500 to 1500 angstroms. The coated blade having a thickness of between 0.3 and 0.5 micrometers measured at a distance of 0.25 micrometers from the blade tip, a thickness of between 0.4 and 0.65 micrometers measured at a distance of 0.5 micrometers from the blade tip, a thickness of between 0.61 and 0.71 micrometers measured at a distance of 1 micrometer from the blade tip, a thickness of between 0.96 and 1.16 micrometers measured at a distance of 2 micrometers from the blade tip, and a thickness of between 1.56 and 1.91 micrometers measured at a distance of 4 micrometers from the blade tip.
    Type: Application
    Filed: March 14, 2012
    Publication date: January 17, 2013
    Inventors: Ashok Bakul Patel, Jeffrey Stuart Parker, Bin Shen, Kenneth James Skrobis, Matthew Robet Stone, John Joseph Nisby, Jason Scott Slattery, Yongqing Nu
  • Publication number: 20130014396
    Abstract: 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° to 135°, a facet width from 0.38 micrometers to 0.65 micrometers a wedge angle from 5° to 30°, and a thickness of between 0.8 and 1.5 micrometers measured at a distance of 1 micrometer from the blade tip.
    Type: Application
    Filed: March 14, 2012
    Publication date: January 17, 2013
    Inventors: Kenneth James Skrobis, Jeffrey Stuart Parker, Bin Shen, Matthew Robert Stone, John Joseph Nisby, Jason Scott Slattery, Yongqing Ju
  • Publication number: 20120311865
    Abstract: Disclosed is a razor blade having a mineral blade with a mineral cutting edge, with the mineral cutting edge having a radius of less than about 20 nanometers and an angle of about 40-50 degrees and wherein the mineral blade is coated in an adhesion promoter and an outer layer and a method of making the razor blade. Also disclosed is a razor having a mineral blade, and a method of making the razor.
    Type: Application
    Filed: June 8, 2012
    Publication date: December 13, 2012
    Applicant: ZAFIRRO, LLC
    Inventors: HAYDEN HAMILTON, RYAN McCARTHY, SIRI M. KHALSA, JACLYN KAMPMEIER, JONATHAN MORRIS, CARL ALVIANI, GRAEME WAGONER-LYNCH, JAMES KELLERMAN
  • Patent number: 8316550
    Abstract: A utility knife blade comprises a cutting edge portion and a remaining portion. The remaining portion is tempered martensite and has a first hardness. The cutting edge portion comprises a region that has been locally re-heat treated so that the microstructure in the cutting edge portion is untempered martensite having a hardness greater than the first hardness.
    Type: Grant
    Filed: February 6, 2008
    Date of Patent: November 27, 2012
    Assignee: Stanley Black & Decker, Inc.
    Inventor: Hadyn Howells
  • Patent number: 8161654
    Abstract: A utility blade for use with conventional retractable and fixed blade utility knives comprising a blade body having a generally trapezoidal configuration defined by a cutting edge, an opposite back edge, a pair of opposing side edges and a pair of cutting points defined by the points of intersection between the side edges and the cutting edge. The blade further defines a pair of score lines, each proximate to one of the side edges. The score lines enable the user to remove a dulled or damaged cutting point, which in turn provides the user with two additional cutting points defined by the points of intersection between the score lines and the cutting edge. Further, the blade is configured with one or more notches strategically located on the back edge of the blade, such that each cutting point can extend from the utility knife at approximately the same distance.
    Type: Grant
    Filed: September 4, 2008
    Date of Patent: April 24, 2012
    Assignee: Irwin Industrial Tool Company
    Inventor: Matthew C. Green
  • Patent number: 7966909
    Abstract: The present invention relates to a process for forming a razor blade. The process includes the steps of: a) providing a substrate, b) forming a wedge-shaped sharpened edge on the substrate that has an included angle of less than thirty degrees and a tip radius of less than 1,000 angstroms, c) placing the substrate in a vacuum chamber, d) placing a first solid target in the vacuum chamber, e) providing a gas to be ionized in the vacuum chamber, and f) generating ions from the first solid target by applying a negative voltage to the first solid target in pulses, the ions forming a thin film coating on the wedge-shaped sharpened edge on the substrate.
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: June 28, 2011
    Assignee: The Gillette Company
    Inventors: John Madeira, Arutiun Papken Ehiasarian, Papken Ehiasar Hovsepian, Krassimir Grigorov Marchev, Neville Sonnenberg
  • Patent number: 7921568
    Abstract: A utility blade for use with conventional retractable and fixed blade utility knives comprising a blade body having a generally trapezoidal configuration defined by a cutting edge, an opposite back edge, a pair of opposing side edges and a pair of cutting points defined by the points of intersection between the side edges and the cutting edge. The blade further defines a pair of score lines, each proximate to one of the side edges. The score lines enable the user to remove a dulled or damaged cutting point, which in turn provides the user with two additional cutting points defined by the points of intersection between the score lines and the cutting edge. Further, the blade is configured with one or more notches strategically located on the back edge of the blade, such that each cutting point can extend from the utility knife at approximately the same distance.
    Type: Grant
    Filed: April 20, 2006
    Date of Patent: April 12, 2011
    Assignee: Irwin Industrial Tool Company
    Inventor: Matthew C. Green
  • Publication number: 20110047805
    Abstract: A system for sharpening and or honing a multi-bladed razor cartridge including a handle and flexible honing material. The flexible honing material is used to hone the razor blades prior to use and to remove excess moisture from the razor blades once the razor blades are cleaned after shaving. The flexible honing material is made of a chamois which can conform to the shape of the razor blade cartridge and razor blades within the cartridge.
    Type: Application
    Filed: August 28, 2009
    Publication date: March 3, 2011
    Inventor: James Michael Deininger
  • Patent number: 7897266
    Abstract: The present disclosure is generally directed to a personal grooming product or device (e.g., foil shaver, rotary shaver, etc.) having a metal coating on one or more surfaces thereof, the grooming product being designed for contacting the skin (e.g., the human hand or face, or the skin of an animal, such as during the act of pet grooming). More specifically, the present disclosure is directed to a personal grooming product or device having a layer of some measurable thickness on such a surface, wherein the layer comprises or contains a tarnish resistant, hypoallergenic and/or antimicrobial silver-containing alloy.
    Type: Grant
    Filed: February 9, 2007
    Date of Patent: March 1, 2011
    Assignee: Rovcal, Inc.
    Inventors: David W. Everett, Jr., Maciej Murzynski, Timothy John Martin, Giovanni Gonzalez
  • Publication number: 20110030226
    Abstract: Disclosed is a razor or cutting blade of a thin sheet-like construction having a ceramic material contained therein. The blade is either wholly made of a ceramic material or has a coating of ceramic material thereon. The blade may be made of many different shapes, such as a rectangle a trapezoid. The blade may have a metal ridge on one edge of the rectangle while the other longitudinal edge is sharpened. The trapezoid construction may have the long edge sharpened in addition to one of the slanted edges. Any of the blades may have notches in non-sharpened edges thereof to act as locating guides when placed in a manipulating handle.
    Type: Application
    Filed: August 5, 2009
    Publication date: February 10, 2011
    Inventor: Michael Dunn-Rankin
  • Patent number: 7882640
    Abstract: Razors are described herein. In some instances the razors include a safety razor blade unit comprising a guard, a cap, and at least two blades with parallel sharpened edges located between the guard and cap. A first blade defines a blade edge nearer the guard and a second blade defines a blade edge nearer the cap. The first blade has a cutter force greater than the cutter force of the second blade. In some instances the razors provide a comfortable shave having improved closeness.
    Type: Grant
    Filed: March 29, 2006
    Date of Patent: February 8, 2011
    Assignee: The Gillette Company
    Inventors: Andrew Zhuk, Weili Yu, Hoang Mai Trankiem, Neville Sonnenberg, Kevin Leslie Powell, Yiqian Eric Liu, Robert L. Lescanec, Steve S. Hahn, Joseph Allan DePuydt, Cinzia Simonis de Cloke, Alan Crook
  • Publication number: 20100299931
    Abstract: A razor blade including a substrate with a cutting edge, the substrate includes a mixed nitride-substrate interregion disposed at or beneath a surface of the substrate, the mixed nitride-substrate interregion being substantially free of a compound layer.
    Type: Application
    Filed: May 26, 2009
    Publication date: December 2, 2010
    Inventors: Krassimir Grigorov Marchev, John Madeira
  • Patent number: 7818883
    Abstract: A disposable safety razor includes a blade housing and a blade disposed within the blade housing to expose a cutting edge suitable for shaving. The blade housing and the blade have complementary characteristics which result in destruction of the blade upon an attempt to remove the blade from within the blade housing. In this regard, the blade housing comprises a substantially rigid housing and the blade comprises a brittle ceramic blade. The safety razor further includes a handle attached to the blade housing. The handle is made from a pliable plastic material that forms an enclosure filled with a dispensable liquid.
    Type: Grant
    Filed: July 22, 2008
    Date of Patent: October 26, 2010
    Assignee: L.I.F.E. Support Technologies, LLC
    Inventor: Samuel Lax
  • Patent number: 7712222
    Abstract: A composite utility blade and method of making such a blade involves butt joining a high speed or tool steel wire to a front edge of an alloy steel backing strip. The wire defines a predetermined cross-sectional shape that substantially corresponds to the cross-sectional shape of the cutting edge of the blade. The wire is electron beam welded to the backing strip to form a composite strip defining a first metal portion formed by the alloy steel backing strip, a second metal portion formed by the high speed or tool steel wire, and a weld region joining the first and second metal portions. The composite strip is then annealed, and the annealed strip is straightened to eliminate any camber therein. The annealed composite strip is then hardened such that the first metal portion defines a first surface hardness and the second metal portion defines a second surface hardness greater than the first surface hardness.
    Type: Grant
    Filed: March 4, 2004
    Date of Patent: May 11, 2010
    Assignee: Irwin Industrial Tool Company
    Inventors: William B. Korb, Brian K. Douglas, Dayananda Sukadhare, Gary F. Scott
  • Publication number: 20090113726
    Abstract: The invention relates to a method for forming a thin, high hardness coating and devices comprising it. The method of the invention consists in depositing, by magnetron cathode sputtering, a titanium film on at least one surface of a substrate under a partial pressure of argon of 1 Pa, then in depositing, by magnetron cathode sputtering, a titanium nitride film, onto the film obtained by introducing nitrogen into the cathodic sputtering chamber while maintaining a partial pressure of 1 Pa, and in depositing a film of a composite nanostructured material based on titanium, zirconium, boron and nitrogen onto the film obtained by magnetron cathode sputtering in active co-sputtering mode. The method of the invention can be applied in many fields, and in particular in the mechanical field in order to improve the surface hardness of mechanical components.
    Type: Application
    Filed: September 25, 2008
    Publication date: May 7, 2009
    Inventors: Cedric DUCROS, Frederic SANCHETTE, Vincent SANZONE
  • Publication number: 20080189959
    Abstract: A method of manufacturing a blade including heating and quenching a coil of strip steel material to harden the material, heating the strip steel material to temper the material, grinding a first angle along an edge of the material, and subsequent to the grinding, re-hardening, for example by induction heating, the edge of the material.
    Type: Application
    Filed: February 6, 2008
    Publication date: August 14, 2008
    Applicant: The Stanley Works
    Inventor: Haydn Howells
  • Publication number: 20080086888
    Abstract: Razor blades and other shaving implements are disclosed that include a blade substrate having first and second major surfaces and first and second edges of which at least one edge is configured as a cutting edge. At least one of the major surfaces includes a region that includes at least one polymer carrying at least one bioactive agent in a manner such that use of the blade for shaving an area of skin causes release of the bioactive agent onto the area of skin. The bioactive agent can be, e.g., at least one skin-medicament and/or at least one skin-care agent, or mixtures thereof. The bioactive agent is released in real time, relative to shaving, onto the skin so as to exert its effect as soon as possible on the skin area.
    Type: Application
    Filed: October 11, 2006
    Publication date: April 17, 2008
    Inventor: Noah Scheinfeld
  • Patent number: 7124511
    Abstract: A razor blade is provided, which achieves improved safety in use and reduced cutting resistance to an object to be cut such as beard and hair, as compared with conventional razor blades. This razor blade can be obtained by using, as a silicon thin sheet, a single crystal silicon material such as Si wafer or a polycrystalline silicon material including relatively large silicon crystal grains, forming at least one opening in the silicon thin sheet by chemical etching, and forming a cutting edge made of silicon single crystal by ion beam etching without machining such that the cutting edge projects into the opening and has a nose radius of 0.5 ?m or less, and preferably 0.1 ?m or less.
    Type: Grant
    Filed: May 27, 2002
    Date of Patent: October 24, 2006
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Tadashi Hamada, Shinji Fujimoto, Shigetoshi Sakon, Takashi Kozai
  • Patent number: 7060367
    Abstract: A blade with improved sharpness and durability is disclosed. The blade includes a base plate having an edge and a coating layer for coating the edge. The coating layer is formed of a material handling metal, and a tip of the coating layer is sharpened. It is preferred that an angle (Ba) between two tapered surfaces be between 15 to 45 degrees.
    Type: Grant
    Filed: June 4, 2001
    Date of Patent: June 13, 2006
    Assignee: Kai R&D Center Co., Ltd.
    Inventors: Katsuaki Yamada, Hiroshi Ohtsubo, Hiroyuki Tashita
  • Patent number: 7059054
    Abstract: An apparatus and method for a cutting blade having a pointed tip and ultra-flat faces that intersect at ultra-sharp edges. The cutting blade is batch-fabricated on a standard {100} semiconductor mono-crystalline silicon wafer using conventional anisotropic wet etching silicon micromachining techniques as a pair of spaced-apart substantially parallel and planar top and bottom surfaces each formed in {100} planes of a {100} mono-crystalline silicon substrate with first and second mutually rotated cutting edges formed between the top and bottom surfaces of the substrate and substantially parallel thereto in adjacent {111} planes that form a first pointed tip at an intersection therebetween, and having third and fourth cutting edges formed between the top and bottom surfaces of the substrate and substantially parallel thereto in adjacent {110} planes with the third and fourth cutting edges forming different pointed intersections with the first and second mutually rotated cutting edges.
    Type: Grant
    Filed: December 24, 2003
    Date of Patent: June 13, 2006
    Assignee: Honeywell International Inc.
    Inventor: Jörg Pilchowski
  • Patent number: 6887586
    Abstract: Sharp-edged cutting tools and a method of manufacturing sharp-edged cutting tools wherein at least a portion of the sharp-edged cutting tool is formed from a bulk amorphous alloy material are provided.
    Type: Grant
    Filed: March 7, 2002
    Date of Patent: May 3, 2005
    Assignee: Liquidmetal Technologies
    Inventors: Atakan Peker, Scott Wiggins
  • Publication number: 20040200077
    Abstract: An improved shearing blade module of an electric clipper comprises an upper blade and a lower blade; the lower blade is fixed, and the upper blade is comprised of a swaying member capable of swaying sideway in the housing of the electric clipper, such that the blades of the upper and lower blades define the shearing action; the lower blade has a metallic main body, and a hard vacuum coated film is disposed on the surface of said main body; said upper blade has a main body with both volume and area smaller than those of the lower blade, and said main body is made of ceramics. Combining the excellent properties of the ceramic material and the hard multiplayer film, the blade module enhances the heat resistance, wear resistance, and sharpness of the blade sections of the upper and lower blades.
    Type: Application
    Filed: April 14, 2003
    Publication date: October 14, 2004
    Inventors: Shu-Sian Liao, Hung-Chang Liao
  • Publication number: 20040163262
    Abstract: A blade of ceramic material is treated to enhance the strength and sharpness of the cutting edge. In one embodiment, ceramic particles along at least one margin of an edge-forming face are fused, such as by a laser treatment. The edge mardin can have a hard ceramic coating of a different ceramic material such as a nitride of chromium, zirconium, titanium, titanium carbon or boron. The hard ceramic coating can be used alone or in conjunction with the laser treatment. The invention includes the methods of treating the edge, both to form the hard ceramic coating and to fuse the particles by scanning with laser, such as an ultraviolet laser.
    Type: Application
    Filed: April 16, 2004
    Publication date: August 26, 2004
    Inventors: Rodney L. King, Theodore C. Crawford
  • Patent number: 6763593
    Abstract: Provided is a razor blade material which has excellent high hardness, high strength and high corrosion resistance. The material is made of an Fe-base alloy containing, by mass %, not less than 0.5% carbon, 9.0 to 14.0% Cr and from more than zero to 8.0% Mo, wherein precipitates, which can be observed at an optional cross section of the razor blade material, have a diameter of less than 0.1 m. The alloy has preferably a chemical composition of 0.5 to 5.0% carbon, 9.0 to 14.0% Cr and 0.5 to 8.0% Mo, 0.5 to 8.0% of B+Si, and the balance of Fe and unavoidable impurities. Preferably, the alloy has a metal structure, not less than 30 volume % of which is amorphous. The material has a thickness of 30 to 100 &mgr;m. The razor blade is preferably coated with polytetrafluoroethylene (PTFE).
    Type: Grant
    Filed: January 24, 2002
    Date of Patent: July 20, 2004
    Assignee: Hitachi Metals, Ltd.
    Inventors: Hideshi Nakatsu, Yasushi Tamura
  • Patent number: 6708749
    Abstract: Apparatus for stripping a coating from a coated optical fiber. The apparatus has a pair of opposed blade holders, one end of each blade holder being adapted to releasably receive and retain a blade. The opposed ends of the blade holders are joined with a flexible member. The opposed blade holders are movable from an open position to a closed position. In the closed position edges of the blades are in a parallel spaced apart position, spaced to grip a coated optical fiber between the plastic blades. The plastic blades are selected and positioned to grip and to effect cracking of the coating while minimizing damage to the optical fiber when a coated optical fiber is placed and moved between the closed blades.
    Type: Grant
    Filed: July 24, 2001
    Date of Patent: March 23, 2004
    Assignee: KMD Technologies Inc.
    Inventor: Robert J. McLeod
  • Patent number: 6684513
    Abstract: A razor blade including a substrate with a cutting edge defined by a sharpened tip and adjacent facets, a layer of hard coating on the cutting edge, an overcoat layer of a chromium containing material on the layer of hard carbon coating, and an outer layer of polytetrafluoroethylene coating over the overcoat layer.
    Type: Grant
    Filed: February 29, 2000
    Date of Patent: February 3, 2004
    Assignee: The Gillette Company
    Inventors: Colin John Clipstone, Steve Hahn, Neville Sonnenberg, Charles White, Andrew Zhuk
  • Publication number: 20020083598
    Abstract: A process for making a cutting instrument includes cutting a blank from a plate or strip of Type 60 Nitinol, having a thickness of between 0.005″-0.500″ using an abrasive waterjet, wire electron discharge machining or laser cutting, and grinding top and bottom surfaces of the blank by rotating a grinder having cubic boron nitride or diamond abrasive particles on a cutting surface of said grinder against the knife blank at a surface speed of about 5000 to 7000 surface feet per minute and grinding to a depth of about 0.001 to 0.005 inches per pass to remove material along the blade surface. The surface of the blade is polished to a surface finish smoother than 20 microinches RMS using Turkish emery abrasive grinding/polishing materials on a buffing wheel driven by a high power motor. The blade is then finish polished to a mirror-like luster of 2 microinches RMS or less using a fine diamond buffing compound and a buffing wheel running at about 3000 RPM.
    Type: Application
    Filed: September 24, 2001
    Publication date: July 4, 2002
    Inventor: Gerald J. Julien