The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 17, 1989
Filed:
Jul. 28, 1986
Robert S Jones, Milwaukee, WI (US);
Other;
Abstract
A rowing exercise machine has a horizontal tubular member on which a seat is mounted on rollers for movement along the member. The horizontal member also mounts foot rests which may be removable. A flywheel assembly is mounted either at the front or rear end of the horizontal member. The flywheel assembly includes a flywheel and a one-way clutch connected to the flywheel. The flywheel is rotated by a user pulling on a handle which is connected by cables, chains or toothed belts to sprockets connected to the flywheel through the one-way clutch. The handle, cable or chain is attached to a slide that moves within the horizontal member and a tension cord is also connected to the slide to urge the handle through a retracted position. The clutch is disengaged when the handle retracts. The flywheel has a non-magnetic, conducting rim portion that passes through a magnetic field created by a stationary field piece having one or more field coils. Switches are actuated by the movement of the slide block within the horizontal member to alternately open and close a circuit from a source of current to the field coil at various positions during a rowing stroke.