Patents by Inventor Ralph Michael Duke

Ralph Michael Duke 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).

  • CVT belt
    Patent number: 9347521
    Abstract: A vulcanized rubber CVT belt in the form of an endless V-belt having a belt body with angled sides, a tensile cord layer of helically spiraled tensile cord embedded in the belt body, an overcord rubber layer, and an undercord rubber layer, wherein the tensile cord is a twisted, single-tow bundle of continuous-filament, carbon fiber impregnated with an adhesive treatment and/or overcoated with adhesive compatible with the rubber of the tensile cord layer. The tow may be 18K. The carbon fiber may have a filament diameter of from about 6.0 to about 6.4-micron, a tensile modulus of from about 200 to about 300 GPa, an elongation at break of from about 1.9% to about 2.3%.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: May 24, 2016
    Assignee: Gates Corporation
    Inventors: Ralph Michael Duke, John Graeme Knox
  • CVT BELT
    Publication number: 20140200108
    Abstract: A vulcanized rubber CVT belt in the form of an endless V-belt having a belt body with angled sides, a tensile cord layer of helically spiraled tensile cord embedded in the belt body, an overcord rubber layer, and an undercord rubber layer, wherein the tensile cord is a twisted, single-tow bundle of continuous-filament, carbon fiber impregnated with an adhesive treatment and/or overcoated with adhesive compatible with the rubber of the tensile cord layer. The tow may be 18K. The carbon fiber may have a filament diameter of from about 6.0 to about 6.4-micron, a tensile modulus of from about 200 to about 300 GPa, an elongation at break of from about 1.9% to about 2.3%.
    Type: Application
    Filed: March 17, 2014
    Publication date: July 17, 2014
    Applicant: THE GATES CORPORATION
    Inventors: Ralph Michael Duke, John Graeme Knox
  • CVT belt
    Patent number: 8672788
    Abstract: A vulcanized rubber CVT belt in the form of an endless V-belt having a belt body with angled sides, a tensile cord layer of helically spiraled tensile cord embedded in the belt body, an overcord rubber layer, and an undercord rubber layer, wherein the tensile cord is a twisted, single-tow bundle of continuous-filament, carbon fiber impregnated with an adhesive treatment and/or overcoated with adhesive compatible with the rubber of the tensile cord layer. The tow may be 18K. The carbon fiber may have a filament diameter of from about 6.0 to about 6.4-micron, a tensile modulus of from about 200 to about 300 GPa, an elongation at break of from about 1.9% to about 2.3%.
    Type: Grant
    Filed: September 24, 2010
    Date of Patent: March 18, 2014
    Assignee: The Gates Corporation
    Inventors: Ralph Michael Duke, John Graeme Knox
  • CVT Belt
    Publication number: 20110070989
    Abstract: A vulcanized rubber CVT belt in the form of an endless V-belt having a belt body with angled sides, a tensile cord layer of helically spiraled tensile cord embedded in the belt body, an overcord rubber layer, and an undercord rubber layer, wherein the tensile cord is a twisted, single-tow bundle of continuous-filament, carbon fiber impregnated with an adhesive treatment and/or overcoated with adhesive compatible with the rubber of the tensile cord layer. The tow may be 18K. The carbon fiber may have a filament diameter of from about 6.0 to about 6.4-micron, a tensile modulus of from about 200 to about 300 GPa, an elongation at break of from about 1.9% to about 2.3%.
    Type: Application
    Filed: September 24, 2010
    Publication date: March 24, 2011
    Applicant: THE GATES CORPORATION
    Inventors: Ralph Michael Duke, John Graeme Knox