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:
May. 30, 1989
Filed:
Jun. 16, 1988
Alan Salyer, Ypsilanti, MI (US);
James M Gittleson, Ann Arbor, MI (US);
The Coach and Company Incorporated, Ypsilanti, MI (US);
Abstract
An exercise machine for performing supination and pronation exercises comprises a framework, a weight stack carriage that is supported on said frame work for vertical motion, and an input mechanism that is operably coupled by a cable and a system of sheaves on the framework to the weight stack carriage. The input mechanism comprises a horizontal shaft that has operating handles at opposite ends for rotating the shaft. A bi-cam is disposed on the shaft, and one end of the cable is tethered to a high point of the bi-cam. The bi-cam has respective cam profiles in its respective halves; one profile interacts with the cable when the shaft is rotated in one sense from a starting position, and the other profile interacts with the cable when the shaft is rotated in the opposite sense from the starting position. The cams have decreasing profiles so that the torque load imposed on the user progressively decreases as the shaft is rotated from the starting point, thereby enabling the machine to closely match the user's strength profile for performing supinations and pronations.