Patents by Inventor Percy Chien

Percy Chien 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).

  • Publication number: 20240017603
    Abstract: A differential drive system uses mass produced components to create a multi-speed, automatic transmission like operation while still taking advantage of the economies of scale. The differential drive system couples two motors to a differential through freewheels allowing the most efficient motor use. A pedal chain sprocket is connected to the differential through a mid axle and through a freewheel allowing the pedals to drive both rear axles.
    Type: Application
    Filed: July 10, 2023
    Publication date: January 18, 2024
    Inventors: Britt Jackson, Thomas Boyle, Percy Chien
  • Patent number: 10315726
    Abstract: A simplified mid-motor drive system includes all necessary electronics and allows for throttle-only operation of the motor. The mid-motor drive system includes an arrangement of uni-directional drive connections (i.e., sprag clutches) between the motor and the pedals which allows each to operate independently or in conjunction, and allows simple modifications to gear ratios of packaged drive systems in order to adapt to regulatory requirements of different worldwide territories.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: June 11, 2019
    Inventors: Britt Jackson, Thomas Boyle, Percy Chien
  • Publication number: 20170073039
    Abstract: A simplified mid-motor drive system includes all necessary electronics and allows for throttle-only operation of the motor. The mid-motor drive system includes an arrangement of uni-directional drive connections (i.e., sprag clutches) between the motor and the pedals which allows each to operate independently or in conjunction, and allows simple modifications to gear ratios of packaged drive systems in order to adapt to regulatory requirements of different worldwide territories.
    Type: Application
    Filed: September 13, 2016
    Publication date: March 16, 2017
    Inventors: Britt Jackson, Thomas Boyle, Percy Chien
  • Patent number: 5857689
    Abstract: A front fork having a suspension system disposed thereto includes an inner tube extending from a crown portion of the front fork, an outer tube slidably mounted to the inner tube, a ring member threadedly connected to the outer tube, a nut member threadedly connected to the inner tube and a spring mounted to the inner tube between the ring member and the nut member. The inner tube has a middle member and a first block respectively fixedly connected therein and the outer tube has a second block fixedly connected therein, a polygonal rod extending through a polygonal hole in the middle member and fixedly connected between the first block and the second block.
    Type: Grant
    Filed: April 14, 1997
    Date of Patent: January 12, 1999
    Assignee: Fairly Bike Manufacturing Co. Ltd.
    Inventor: Percy Chien
  • Patent number: D364842
    Type: Grant
    Filed: August 1, 1994
    Date of Patent: December 5, 1995
    Inventors: Kirk Hoeppner, Percy Chien
  • Patent number: D380990
    Type: Grant
    Filed: May 14, 1996
    Date of Patent: July 15, 1997
    Inventor: Percy Chien
  • Patent number: D934738
    Type: Grant
    Filed: July 1, 2020
    Date of Patent: November 2, 2021
    Inventors: Raphiphong Yasatharo, Percy Chien, Norbert Haller
  • Patent number: D950424
    Type: Grant
    Filed: January 19, 2021
    Date of Patent: May 3, 2022
    Inventors: Percy Chien, Norbert Haller