Patents by Inventor Robert Lyall

Robert Lyall has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4208189
    Abstract: A match splint is formed from a rigid core member, which can be substantially non-porous, e.g. of glass, metal or plastic, or porous, e.g. of wood or wood substitute, with an absorbent layer of finely divided particles or fibres adhering to the core adjacent the head of the match, the absorbent layer acting as the reservoir to hold the fuel, e.g. paraffin wax, as an impregnant therein.
    Type: Grant
    Filed: February 23, 1979
    Date of Patent: June 17, 1980
    Assignee: Wilkinson Sword Limited
    Inventors: Robert Lyall, Ian Maxwell, Valerie A. Buckle
  • Patent number: 4205958
    Abstract: A method for the manufacture of matches which comprises applying to a match splint, before the formation thereon of the match head, a surface coating of an aqueous dispersion comprising (i) a low melting point solid fuel e.g. paraffin wax, (ii) a finely divided particulate or fibrous filler and (iii) either a water-immiscible volatile solvent for the fuel or a water-soluble or water-dispersible adhesive, or a mixture of the two; and thereafter drying the coated splint to deposit thereon adjacent the end thereof, on which the head is to be formed, a surface coating comprising a mixture of said fuel and said filler, and, if present, said adhesive.
    Type: Grant
    Filed: February 23, 1979
    Date of Patent: June 3, 1980
    Assignee: Wilkinson Sword Limited
    Inventors: Robert Lyall, Ian Maxwell, Valerie A. Buckle
  • Patent number: 3939560
    Abstract: The invention provides shaving equipment having a guard surface which bears against the skin of the user during shaving, wherein a part at least of said surface is roughened.
    Type: Grant
    Filed: January 30, 1974
    Date of Patent: February 24, 1976
    Assignee: Wilkinson Sword Ltd.
    Inventor: Robert Lyall