Patents by Inventor James F. Ster, Jr.

James F. Ster, Jr. 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).

  • Exercise machine
    Patent number: 6080088
    Abstract: The apparatus converts reciprocating motion of a rowing type exercise into single direction rotational motion of a shaft in a predetermined direction. A reciprocable arm of a rowing type exercise is pivotally mounted to a frame. A shaft, set for rotation in the frame has first and second one way clutches. First and second racks are mounted with respect to the reciprocable arm and engage one or the other of the one way clutches for driving the shaft in a predetermined direction of rotation as the arms are reciprocated. One or the other clutches freewheels against its respective rack when one of the racks is moved in to drive the shaft and thereby retains the driving rack in engagement with its respective one way clutch.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: June 27, 2000
    Assignee: Bioform Engineering, Inc.
    Inventors: Paul S. Petersen, James F. Ster, Jr.
  • Exercise machine which converts reciprocating motion to unidirectional rotational motion
    Patent number: 5542893
    Abstract: The apparatus converts reciprocating motion of a rowing type exercise into single direction rotational motion of a shaft in a predetermined direction. A reciprocable arm of a rowing type exercise is pivotally mounted to a frame. A shaft, set for rotation in the frame has first and second one way clutches. First and second racks are mounted with respect to the reciprocable arm and engage one or the other of the one way clutches for driving the shaft in a predetermined direction of rotation as the arms are reciprocated. One or the other clutches freewheels against its respective rack when one of the racks is moved in to drive the shaft and thereby retains the driving rack in engagement with its respective one way clutch.
    Type: Grant
    Filed: February 16, 1994
    Date of Patent: August 6, 1996
    Assignee: Bioform Engineering, Inc.
    Inventors: Paul S. Petersen, James F. Ster, Jr.