Patents by Inventor Ninneh Gripenholt

Ninneh Gripenholt 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).

  • Method and wire element for retreading a tire
    Patent number: 6630044
    Abstract: A method of applying a tread (3) to a tire casing (1) wherein a prevulcanized tread (3) is applied to the tire casing (1) via an intermediate layer of non-vulcanized rubber binder (2), and wherein the layer of rubber binder (2) is heated by supplying current to the layer through an electrically conductive wire (4). The wire used in accordance with the invention comprises a multiple of wires or strands (4a). The invention also relates specifically to such a multiwire element.
    Type: Grant
    Filed: July 13, 2001
    Date of Patent: October 7, 2003
    Inventors: Goran Boling, Ninneh Gripenholt
  • Method for retreading vehicle tires
    Patent number: 4559093
    Abstract: A method for retreading vehicle tires. A carcass is provided with a prevulcanized tread and an unvulcanized tie-gum layer between the carcass and tread. A microwave applicator is located above the tread for emitting microwaves to the tire for creating heat energy in the tire. A reflector for microwaves comprising an electrically conductive material is attached in connection to or in the tie-gum layer to achieve high quality rapid vulcanization without heating the carcass.
    Type: Grant
    Filed: December 27, 1982
    Date of Patent: December 17, 1985
    Assignee: Q&Q Retreading System AB
    Inventors: Benny Berggren, Ninneh Gripenholt
  • Tie-gum layer for retreading vehicle tires
    Patent number: 4557775
    Abstract: A tie-gum layer for retreading vehicle tires. In carrying forth retreading of a vehicle tire, a prevulcanized carcass is provided with a prevulcanized tread and an unvulcanized tie-gum layer between the carcass and tread. A microwave applicator is located above the tread for emitting microwaves to the tires for creating heat energy in the tire. A reflector for microwaves comprising an electrically conductive material is provided in association with the tie-gum layer for providing high quality rapid vulcanization without heating the carcass.
    Type: Grant
    Filed: January 13, 1984
    Date of Patent: December 10, 1985
    Assignee: Q & Q Retreading System AB
    Inventors: Benny Berggren, Ninneh Gripenholt
  • Method and apparatus for retreading vehicle tires
    Patent number: 4536242
    Abstract: A method and apparatus for retreading vehicle tires. A carcass is provided with a prevulcanized tread and an unvulcanized tie-gum layer between the carcass and tread. A microwave applicator is located above the tread to emit microwaves against the tire for generating heat energy in the tire whereby the tie-gum layer is vulcanized. Vulcanization of the edges of the tie-gum layer is facilitated by local heating at or in connection with said edges by heat generation outside of the tire. The heating can be effected either by utilizing a material with a high dissipation factor for microwave energy or, alternatively, by use of electric resistance wires.
    Type: Grant
    Filed: May 9, 1983
    Date of Patent: August 20, 1985
    Assignee: Q & Q Retreading System AB
    Inventors: Ninneh Gripenholt, Benny Berggren, Goran Boling