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:
Apr. 18, 1989
Filed:
Apr. 25, 1988
Applicant:
Inventor:
Chi H Dang, Boulder, CO (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A63B / ;
U.S. Cl.
CPC ...
272129 ; 272125 ;
Abstract
A resistance generator of a physical exercise apparatus generates a resistance that is the sum of two components: Isotonic and Isokinetic resistances; wherein the Isotonic is independent of motion speed and the Isokinetic increases with motion speed when the motion speed exceeds a preselected level. The Isokinetic component contains the user's exercise motion to an optimum speed range and provides resistance up to the user's maximum capacity. The Iostonic component insures a minimum resistance throughout the range of motion.