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. 17, 1990
Filed:
Aug. 22, 1989
Applicant:
Inventor:
Paul Lin, Tao Yuau, TW;
Assignee:
Other;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A63B / ;
U.S. Cl.
CPC ...
272 69 ;
Abstract
An improved motorized treadmill speed changer, especially one which changes speed by dry friction, characterized by comprising an adjusting unit consisting of a handle bar, a pinion, a rack, a motor base slide and a U support, and a driving unit consisting of a motor, a friction cone and a friction wheel, and being constructed in such way that the speed of the revolving belt of the motorized treadmill can be changed steplessly and controlled by turning the handle bar.