Patents by Inventor Joseph W. Alter

Joseph W. Alter 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).

  • Stair climbing apparatus
    Patent number: 5769759
    Abstract: An apparatus for simulating stair climbing is provided which allows selection of step height. A side member is pivotally mounted to a base and oriented at a selected angle with respect to the base. A displacement mechanism mounted to the base is attached to the side member for rotating the side member with respect to the base. A series of platforms travel in a selected platform path including traveling along the side member. The top surface of each platform is a predetermined horizontal distance from the top surface of an adjacent platform which corresponds to the selected angle.An apparatus for exercising the muscles of a user is also provided. A frame has a first side and a second side. A first chain loop is disposed on the first side, at least a portion of the first chain moving at a selected angle with respect to the frame. A second chain loop disposed at the second side, at least a portion of the second chain moving at the selected angle with respect to the frame.
    Type: Grant
    Filed: January 30, 1997
    Date of Patent: June 23, 1998
    Inventors: Joseph W. Alter, James A. Deola