Patents by Inventor James A. Stein

James A. Stein 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).

  • Grease injector for bicycle crank bearings
    Patent number: 4883368
    Abstract: This invention relates to a device by which the pedal crank bearings of a bicycle may have the grease replaced without disassembly of the mechanism. The invention is to be installed into existing bicycle crank bearing assemblies.
    Type: Grant
    Filed: December 8, 1987
    Date of Patent: November 28, 1989
    Inventor: James A. Stein
  • Clamp for bicycle crank bearing wrench
    Patent number: 4732060
    Abstract: A clamp to secure the location of a spanner wrench on the bearing cup of a bicycle crank bearing during the installation or removal of the bearing cup from the bicycle frame crank housing.
    Type: Grant
    Filed: February 3, 1986
    Date of Patent: March 22, 1988
    Inventor: James A. Stein
  • Thrust support for bicycle seats
    Patent number: 4363516
    Abstract: A thrust support for bicycles against which the rider may press his buttocks at the same time he exerts the muscular force of his legs upon the pedals so as to accomplish additional driving power, thereby exerting less upper body energy and maintaining proper seat position.
    Type: Grant
    Filed: August 21, 1980
    Date of Patent: December 14, 1982
    Inventors: Douglas E. Braly, James A. Stein