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:
Jun. 14, 1988
Filed:
Feb. 26, 1987
Applicant:
Inventor:
Chi H Dang, Boulder, CO (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A63B / ;
U.S. Cl.
CPC ...
272125 ; 272129 ;
Abstract
A physical exercise apparatus for isokinetic and eccentric training which employs a permanent magnet electric motor/generator as the means for generating positive and negative loads. An electrical braking circuit which employs zener diodes governs the speed of a permanent magnet electric generator by providing a sharp increase of resisting torque with increasing rotation speed when the rotation speed reaches a predetermined value.