Composite Razor Blade Patents (Class 30/346.58)
  • Patent number: 11318632
    Abstract: A cutting member for a shaving cartridge is provided that includes a flat cutting portion, a bent portion, and a base portion. The flat cutting portion has a front cutting-edge portion. The bent portion is intermediate to the base portion and the flat cutting portion. The bent portion and the base portion are made out of one single piece of material. The bent portion is arranged such that it is adjacent to the front cutting portion. The proposed shape of the cutting member resembles a reverse L.
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: May 3, 2022
    Assignee: BIC-VIOLEX SA
    Inventors: Dimitrios Efthimiadis, Panagiotis Kopelas
  • Patent number: 11267149
    Abstract: An integral razor blade which is thin and has improved strength by shaping a geometrical structure of the razor blade and a razor cartridge using the same. The razor blade includes a base portion, a bent portion extending in a bent manner from one end of the base portion, and an edge portion extending from one end of the bent portion, a cutting edge being formed at one end of the edge portion. A first separation distance X between a straight line extending in a longitudinal direction from a front surface of the base portion and an end point of the cutting edge ranges from 0.3 mm to 1.0 mm.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: March 8, 2022
    Assignee: DORCO CO., LTD.
    Inventors: Ho Jun Noh, Jun Soo Chang
  • Patent number: 11135733
    Abstract: A device for shaving and dispensing material therefrom. The shaving device has a shaving head removably attached to a handle. The shaving head includes at least one blade to allow a user to cut hair. The handle has an internal cavity, wherein the internal cavity can be separated into two parts to allow insertion of a capsule containing a dispensable material, such as shaving cream or aftershave. The handle includes an opening adjacent to the shaving head and an outlet at the opposing end of the handle. The opening and the outlet allow the material from the capsule to be dispensed therethrough. The dispensable material may be dispensed at will by the user.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: October 5, 2021
    Inventor: Anthony Moretti
  • Patent number: 11045965
    Abstract: A masking foil, for a shaving cartridge, and a shaving cartridge comprising a housing having a top surface, a bottom surface, a front edge, a rear edge, and a pair of side edges extending between the front edge and the rear edge. The housing includes a main blade disposed between the front edge and the rear edge. The main blade includes a main cutting edge extending toward the top surface and is movable in the housing. The shaving cartridge further comprises a masking foil. The masking foil includes a front portion located forward of the main cutting edge, a back portion located rearward the main cutting edge, and at least one ribbon which extends between the front portion and the back portion and which partially covers the main cutting edge.
    Type: Grant
    Filed: July 27, 2017
    Date of Patent: June 29, 2021
    Assignee: Bic Violex S.A.
    Inventors: Christos Galanis, Dimitrios Efthimiadis, Christoforos-Athanasios Brellis, Ioannis Malliaros, Maria Petratou, Anestis Tsegenidis, Panagiotis Moustakas, Vasileios Papachristos
  • Patent number: 10668637
    Abstract: A preflex, arcuately shaped blade head is formed of a cartridge having a cutting edge supported on a curved, flexible blade support. The blade head is oversized, being greater than 2ΒΌ? in lateral linear length. An outrigger blade stabilizer extends posteriorly cantilevered from the blade support. A palm gripping handle forms a bulbous, palm accommodating shaped gripping member having a plan outline shaped generally of kite shape or an elongated Reuleax triangle, with a heel element forming a volar outer ridge at a distal end. An upper arcuate surface forms an oblique arch about the lateral plane of the handle. A longitudinal arch is further formed about the linear plane of the handle. A lower curved surface forms a finger receiving notch at a proximal end of the handle. Such features significantly extend the range of use of the shaver and is specifically adapted for shaving a user's scalp.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: June 2, 2020
    Inventor: Jeffrey C. Stone
  • Patent number: 10471620
    Abstract: A knife including a cutting edge, a fixed edge, and a plurality of beam elements connecting the cutting edge to the fixed edge, each of the beam elements having a beam element extent oriented between about 20 degrees and about 80 degrees off of the cutting edge, each beam element separated from adjacent beam elements by a reduced stiffness zone, each reduced stiffness zone having a reduced stiffness zone extent oriented from about 20 degrees to about 80 degrees off of the cutting edge. The knife can be employed in a process and an apparatus for cutting a web.
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: November 12, 2019
    Assignee: The Procter & Gamble Company
    Inventors: Dale Francis Bittner, Howard Jay Kalnitz, Stephen Douglas Congleton, Christopher Robert Lyman
  • Patent number: 8584344
    Abstract: A method of forming a functional razor cartridge for repeated shaving comprises rapid prototyping a housing of a razor cartridge. The housing has a front wall, a rear wall and opposing side walls disposed transverse to and between said front and rear walls. The method further comprises loading a metal insert with one or more elongate blade assemblies and disposing the metal insert in the housing such that the one or more blade assemblies extend between the opposing side walls of the housing.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: November 19, 2013
    Assignee: The Gillette Company
    Inventors: Mark Peterson, Dominic Michael Piff
  • Patent number: 8220156
    Abstract: A hair removal kit having a handle, a cover removably engagable to the handle, and a cartridge removably engagable to the handle. The cartridge has at least one blade. A removable dispensing unit is disposed within the handle. The dispensing unit has a pump, an applicator in liquid communication with the pump, and a reservoir having a first position and a second position. The reservoir is in liquid communication with the pump in the second position, but not in liquid communication with the pump in the first position.
    Type: Grant
    Filed: January 14, 2011
    Date of Patent: July 17, 2012
    Assignee: The Gillette Company
    Inventors: Edward Neill Forsdike, Paul Michael Jessemey, Barry Keith Rockell, Kevin James Wain, Lee Burrowes, Guohua Pan
  • Publication number: 20120102761
    Abstract: A hair removal cartridge having a housing, a cap, and at least one blade mounted to the housing. The blade has a blade edge in front of the cap. A guard is in front of the blade. The guard defines an elongated recess having an overall width extending parallel to the blade that is 70% to 100% of an overall width of the guard.
    Type: Application
    Filed: January 14, 2011
    Publication date: May 3, 2012
    Inventors: Paul Michael Jessemey, Kevin James Wain
  • Publication number: 20110258856
    Abstract: A shaving blade unit having a housing with a top surface, a bottom surface, a front edge, a rear edge and a pair of side edges extending between the front edge and the rear edge. The housing has a pair of apertures between the front edge and the rear edge. The pair of apertures extend through the housing from the top surface to the bottom surface. One or more shaving blades are disposed between the front edge and the rear edge. The one or more shaving blades each have a cutting edge. A clip has a pair of legs that extend through the pair of apertures. Each leg is bent about at least a portion of the bottom surface of the housing securing the clip to the housing and retaining the blades on the housing.
    Type: Application
    Filed: July 5, 2011
    Publication date: October 27, 2011
    Inventors: Vincent P. Walker, Corey E. Corbeil, Stephen Rawle
  • Publication number: 20110203120
    Abstract: The invention discloses a novel razor cartridge including a housing having a top, front and back areas, and a bottom, and a plurality of posts each having an end portion extending towards the housing bottom and at least one blade disposed in the housing. Each blade includes a cutting edge and a bottom portion having front and back sides wherein the bottom portion of the blade is disposed adjacent at least one of the plurality of posts. The posts are desirably made of plastic. The end portions of the posts are crushed to provide contact and support to the front and/or back side of the bottom portion of the blades in the housing. The crush force may be up to about 100 lbs-force and the posts are reduced in height by about 20% to about 95%. The crushed posts retain the blades in the housing restricting fore and aft blade movement.
    Type: Application
    Filed: February 17, 2011
    Publication date: August 25, 2011
    Inventor: Stephen Charles Witkus
  • Publication number: 20110119922
    Abstract: A process for manufacturing a safety razor cartridge that includes providing an assembly having a platform having a top face, the platform including a cap portion and two lateral side portions, at least one cutting member extending between the lateral side portions of the platform, the cutting member being supported by the platform, the cutting member being movable with respect to the platform, the platform and cutting member cooperating to guide a movement of the cutting member with respect to the platform, a cover having a bottom face facing the top face of the platform. The cover includes a cap portion that covers the cap portion of the platform and two lateral side portions that cover the lateral side portions of the platform. The cover is welded to the platform by applying an ultrasonic beam to a plurality of discrete locations of the assembly.
    Type: Application
    Filed: July 18, 2008
    Publication date: May 26, 2011
    Applicant: Bic-Violex SA
    Inventors: Vasileios Ntavos, Georgios Koulourias
  • Publication number: 20100319204
    Abstract: A method of forming a functional razor cartridge for repeated shaving comprises rapid prototyping a housing of a razor cartridge. The housing has a front wall, a rear wall and opposing side walls disposed transverse to and between said front and rear walls. The method further comprises loading a metal insert with one or more elongate blade assemblies and disposing the metal insert in the housing such that the one or more blade assemblies extend between the opposing side walls of the housing.
    Type: Application
    Filed: June 9, 2010
    Publication date: December 23, 2010
    Inventors: Mark Peterson, Dominic Michael Piff
  • Publication number: 20100229397
    Abstract: A razor is provided with a blade member 3 having a base and a blade body 4 on the base, a blade base member 5 arranged on the back side of the razor head 2, and a top member 6 arranged on the front side of the razor head 2. The blade member 3 is fitted between the blade base member 5 and the top member 6. The base is supported on the blade base member 5. A cutting edge 4a of the blade body 4 is exposed at the top member 6. The base is elastically supported by the leaf spring so as to move integrally against a pressing force from the skin surface when the blade body is caused to contact the skin surface. A contact pressure of the blade body 4 on the skin surface is restricted, thereby improving the shaving performance. Further, since a single-component blade member 3 having the blade body 4 on the base is fitted between the blade base member 5 and the top member 6, this simplifies the structure for elastically supporting the blade body 4 and allowing the blade body 4 to move.
    Type: Application
    Filed: February 14, 2007
    Publication date: September 16, 2010
    Applicant: KAI R&D Center Co., Ltd.
    Inventor: Hiroyuki Nakasuka
  • 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: 20090029811
    Abstract: An expandable broadhead and blades therefor that are configured to break or fracture upon contact with bone or the like to reduce the size of the blade and improve broadhead penetration.
    Type: Application
    Filed: July 25, 2007
    Publication date: January 29, 2009
    Inventor: Allen R.E. Bolen, III
  • 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: 6490794
    Abstract: A disposable shaving razor comprising a plurality of small blades secured in coplanar relation with one another and forming a continuous edge. The blades are supported in coplanar relation by first and second grips positioned on opposite sides of the blades and urged in pressed abutment therewith. The grips partially form a slot in which the blades are received. Each blade includes a planar body and an engagement member extending from the planar body in angular relation thereto. The first grip defines a channel in which the engagement members are received to lock the plurality of blades within the slot. The present invention is intended for use primarily in penal institutions to minimize the use of the razor as a weapon.
    Type: Grant
    Filed: September 1, 2000
    Date of Patent: December 10, 2002
    Inventor: Mark Luttrell
  • Patent number: 6237444
    Abstract: A safety razor blade tool comprises a substantially rectangular, single-edged safety razor blade having a cutting edge and an opposing non-cutting edge and a thermoplastic protective cover fixedly attached to the non-cutting edge. The protective cover is substantially coextensive with the length of the non-cutting edge of the blade and has a resilient, slip-resistant surface. The protective cover comprises two substantially identical, complimentary cover parts. Each cover part comprises an injection-molded substantially rigid inner layer of thermoplastic material and a rubberized outer layer covering the rigid inner layer. The outer layer comprises a compatible, injection-molded thermoplastic rubber.
    Type: Grant
    Filed: June 18, 1999
    Date of Patent: May 29, 2001
    Assignee: BIC Corporation
    Inventor: Jisu Kim