Patents by Inventor Ernest H. Marshall

Ernest H. Marshall 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).

  • Shift mechanism
    Patent number: 5005438
    Abstract: A multi-speed transmission has particular usefulness in bicycles, completely eliminating the use of the commonly used derailleur and the exposed flexible cable and the readjustment problems inherent with that prior structure. The transmission includes separate concentric gear rings which to a certain extent operate independently of each other. A shift mechanism for shifting the transmission is such the transmission can not be shifted from one gear to a non-adjacent gear without stopping at a gear therebetween. That is, no gear can be skipped. This is accomplished by a particular relationship of a pawl, a pusher, a shift segment plate and barrels mounted on the shift segment plate, among other parts.
    Type: Grant
    Filed: June 25, 1990
    Date of Patent: April 9, 1991
    Inventor: Ernest H. Marshall
  • Transmission
    Patent number: 4955247
    Abstract: A multi-speed transmission has particular usefulness in bicycles, completely eliminating the use of the commonly used derailleur and the exposed flexible cable and the readjustment problems inherent with that prior structure. The transmission includes separate concentric gear rings which to a certain extent operate independently of each other. A shift mechanism for shifting the transmission is such the transmission can not be shifted from one gear to a non-adjacent gear without stopping at a gear therebetween. That is, no gear can be skipped. This is accomplished by a particular relationship of a pawl, a pusher, a shift segment plate and barrels mounted on the shift segment plate, among other parts.
    Type: Grant
    Filed: November 21, 1988
    Date of Patent: September 11, 1990
    Inventor: Ernest H. Marshall
  • Device for collet mounting
    Patent number: 4744706
    Abstract: A device for use in a lathe or similar rotary machine is constructed to receive the projecting nose portion of a collet, and to be pulled into firm contact with the face of the machine spindle so as to create an extremely rigid interconnection.
    Type: Grant
    Filed: February 17, 1987
    Date of Patent: May 17, 1988
    Inventor: Ernest H. Marshall
  • Combined collapsible cup, compass and altimeter
    Patent number: D309116
    Type: Grant
    Filed: October 30, 1987
    Date of Patent: July 10, 1990
    Inventor: Ernest H. Marshall