Patents by Inventor Donald A. Sheff

Donald A. Sheff 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).

  • Ergonomic bicycle handlebar and cycling systems
    Patent number: 11919601
    Abstract: An ergonomic and aerodynamic bicycle handlebar system having appropriate sweep angles and slope angles, embodiments of which can vary both for the type of application and the width of the bar, provides improved energy efficiency, comfort and increased center of gravity control. Flare angle and drop angle can also be adjusted for particular applications. The handlebar may be made of carbon fiber or other suitable materials. Various alternative embodiments are disclosed for drop handlebars and mountain bike handlebars.
    Type: Grant
    Filed: December 4, 2020
    Date of Patent: March 5, 2024
    Assignee: COEFFICIENT CYCLING LLC
    Inventors: Donald A. Sheff, Rick D. Sutton, Damon Campbell, William L Nighan
  • ERGONOMIC BICYCLE HANDLEBAR AND CYCLING SYSTEMS
    Publication number: 20230011513
    Abstract: An ergonomic and aerodynamic bicycle handlebar system having appropriate sweep angles and slope angles, embodiments of which can vary both for the type of application and the width of the bar, provides improved energy efficiency, comfort and increased center of gravity control. Flare angle and drop angle can also be adjusted for particular applications. The handlebar may be made of carbon fiber or other suitable materials. Various alternative embodiments are disclosed for drop handlebars and mountain bike handlebars.
    Type: Application
    Filed: December 4, 2020
    Publication date: January 12, 2023
    Applicant: Coefficient Cycling LLC
    Inventors: Donald A. SHEFF, Rick D. SUTTON, Damon CAMPBELL, William L. NIGHAN
  • CYCLING AERO FOIL SYSTEM
    Publication number: 20220176737
    Abstract: The coefficient cycling aero foil system is designed to reduce drag and turbulence from a tire and spokes used to support a bicycle wheel. The system is integrated into a rim on a bicycle wheel which allows for increased forward momentum by cutting drag and reducing wheel turbulence that occurs during the rotation of a bicycle wheel. The foils may be strategically placed for optimum aerodynamic wind flow and are precisely angled to force wind past the foil creating increased forward momentum.
    Type: Application
    Filed: December 13, 2021
    Publication date: June 9, 2022
    Inventor: Donald A. SHEFF
  • Cycling aero foil system
    Patent number: 11198323
    Abstract: The coefficient cycling aero foil system is designed to reduce drag and turbulence from a tire and spokes used to support a bicycle wheel. The system is integrated into a rim on a bicycle wheel which allows for increased forward momentum by cutting drag and reducing wheel turbulence that occurs during the rotation of a bicycle wheel. The foils may be strategically placed for optimum aerodynamic wind flow and are precisely angled to force wind past the foil creating increased forward momentum.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: December 14, 2021
    Assignee: COEFFICIENT CYCLING LLC
    Inventor: Donald A. Sheff
  • COEFFICIENT CYCLING AERO FOIL SYSTEM
    Publication number: 20190143747
    Abstract: The coefficient cycling aero foil system is designed to reduce drag and turbulence from a tire and spokes used to support a bicycle wheel. The system is integrated into a rim on a bicycle wheel which allows for increased forward momentum by cutting drag and reducing wheel turbulence that occurs during the rotation of a bicycle wheel. The foils may be strategically placed for optimum aerodynamic wind flow and are precisely angled to force wind past the foil creating increased forward momentum.
    Type: Application
    Filed: November 15, 2018
    Publication date: May 16, 2019
    Inventor: Donald A. Sheff