Toothed Or Waved Edge Patents (Class 30/346.56)
  • Patent number: 11453137
    Abstract: To solve discomfort and safety issues caused by sharp glide sides, a shaving assembly and a hair cutting appliance including the shaving assembly with a protection element is provided. The shaving assembly comprising a supporting member; a cutting element extending in the first direction; a guard foil stretched and extending in the first direction and surrounding the cutting element, the guard foil including a bent part and a flat contact surface, wherein the bent part extends in the first direction for fixing the guard foil on the supporting member, and the flat contact surface is adapted to be in contact with skin; and a protection element arranged at at least one end of the guard foil and including a curved surface exposed to the skin.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: September 27, 2022
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Robert Godlieb, Johannes Tseard Van Der Kooi, Martinus Bernardus Stapelbroek, Albert Jan Aitink, Everhardus Johannes Hoexum, Ramachandra Rao Ganesh
  • Patent number: 11254022
    Abstract: Disclosed here are shaving razor systems and methods including razor cartridges with a unitary frame having a length and width, a topside and an underside, wherein the unitary frame includes angled joints or bends connecting at least three guards running lengthwise on the unitary frame, the guards separated by at least three gaps in the frame, and at least three blades, affixed to the underside of the guards of the unitary frame, wherein the at least three blades include edges, and wherein the blade edges extend into the gaps in the frame when affixed to the underside of the guards of the unitary frame.
    Type: Grant
    Filed: April 12, 2021
    Date of Patent: February 22, 2022
    Assignee: Personal Care Marketing and Research, Inc.
    Inventor: Gideon Hooberman
  • Patent number: 11000960
    Abstract: Disclosed here are shaving razor systems and methods including razor cartridges with a unitary frame having a length and width, a topside and an underside, wherein the unitary frame includes angled joints or bends connecting at least three guards running lengthwise on the unitary frame, the guards separated by at least three gaps in the frame, and at least three blades, affixed to the underside of the guards of the unitary frame, wherein the at least three blades include edges, and wherein the blade edges extend into the gaps in the frame when affixed to the underside of the guards of the unitary frame.
    Type: Grant
    Filed: November 16, 2020
    Date of Patent: May 11, 2021
    Assignee: Personal Care Marketing and Research, Inc.
    Inventor: Gideon Hooberman
  • Patent number: 8832946
    Abstract: The invention comprises cutting blades useful for cutting tape in packaging processes and cutting assemblies or bag sealing assemblies using the blades. Generally, the blades comprise a support and a plurality of teeth attached to the support wherein a first set of a plurality of the teeth defining a flat tip are positioned on the support between a second set of a plurality of the teeth defining a sharp tip and a third set of a plurality of the teeth defining a sharp tip.
    Type: Grant
    Filed: February 5, 2009
    Date of Patent: September 16, 2014
    Assignee: Nestec S A
    Inventors: Dwight E. Howdeshell, II, Frank J. Weber, Rex Poff, Dennis C. Schuette, Ray Johnson
  • Publication number: 20100071216
    Abstract: A utility knife blade comprising a blade body defining a first side, a second side opposite the first side, a back edge and a cutting edge opposite the back edge. The cutting edge includes a plurality of serrated portions and substantially non-serrated portions. The blade further defines two opposing lateral edges extending between the back edge and the cutting edge. A plurality of score lines laterally spaced relative to each other along the cutting edge extend across at least one of the first and second sides of the blade between the cutting edge and the back edge, the score lines defining a plurality of blade segments therebetween. The score lines extend between the non-serrated portions of the cutting edge and the back edge so that the serrated portions avoid contact with the score lines to facilitate the breaking off of each cutting segment when desired.
    Type: Application
    Filed: September 22, 2008
    Publication date: March 25, 2010
    Inventor: Joseph Thomas NOVAK
  • Patent number: 6823593
    Abstract: An improved serrated cutting blade is characterized by the shape and positioning of the sharpened teeth of the cutting edge. In preferred embodiments the blade may be used in combination with a handle or holder such as that typically referred to as a utility knife or box cutter.
    Type: Grant
    Filed: February 18, 2003
    Date of Patent: November 30, 2004
    Inventor: Michael Dunn-Rankin
  • Publication number: 20040226176
    Abstract: The present invention is directed to a razor blade having a non-linear cutting edge and a method for making the razor blade. The razor blade comprises a substrate and a coating layer applied to at least one surface thereof. The coating layer is etched to define a plurality of substantially co-planar cutting edge patterns collectively forming a non-linear cutting edge on the razor blade. Each cutting edge pattern defines an exterior edge having a sharpness sufficient to cut hair. Preferably, a portion of the substrate is removed so that the exterior edges of the cutting edge patterns are offset from the substrate.
    Type: Application
    Filed: March 31, 2004
    Publication date: November 18, 2004
    Inventor: Dennis J. Peterlin
  • Patent number: 6782846
    Abstract: A pet grooming tool, for use with a furry pet such as a dog or cat having loose hair and non-loose hair, is adapted for removing the loose hair from the pet. The grooming tool comprises an elongate handle portion extending generally along a handle axis, and a pet engageable portion secured to the handle portion. The pet engageable portion includes a blade portion and a plurality of teeth. The blade portion includes a blade edge. The teeth extend from the blade edge. The pet engageable portion is secured to the handle portion in a manner so that pulling the handle portion generally along the handle axis while the pet engageable portion is in engagement with the pet causes the blade portion to engage the loose hair of the pet and pull it from the pet without cutting or pulling the non-loose hair from the pet.
    Type: Grant
    Filed: May 30, 2000
    Date of Patent: August 31, 2004
    Inventors: Angela L. Porter, David Porter
  • Patent number: 6367533
    Abstract: A cut-off blade assembly including a thin metal blade having an attachment portion by which the cut-off blade assembly can be attached to a dispenser, and a plurality of projecting similarly shaped triangular primary teeth. The triangular primary teeth each have two sides terminating in points and have bases adjacent the attachment portion that are aligned in a first direction along the blade so that their points project generally at right angles to that first direction. Edge surfaces on the sides and at the points of the primary teeth intersect a major surface of the primary teeth at an included angle of no greater than about 90 degrees to define a cutting edge at that intersection. The cut-off blade assembly further includes projections along one major surface of the primary teeth.
    Type: Grant
    Filed: July 21, 1999
    Date of Patent: April 9, 2002
    Assignee: 3M Innovative Properties Company
    Inventor: James F. Pitzen
  • Patent number: 6176014
    Abstract: A novel cutting element in or for a safety razor comprises an elongate member with a series of slots (5), each slot (5) tapering from an open forward end to a substantially closed trailing end, and each slot (5) being confined between a pair of shaped edges (6) for slicing hairs as they move through the slot as the cutting element is moved across the skin. One or more of the cutting elements may be used in a safety razor blade unit, either alone or in combination with a blade having a conventional straight sharpened edge.
    Type: Grant
    Filed: July 2, 1999
    Date of Patent: January 23, 2001
    Assignee: The Gillette Company
    Inventor: Richard Garraway