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:
Sep. 19, 1989
Filed:
Nov. 07, 1988
Applicant:
Inventor:
Jeffrey B Johnson, Bellevue, WA (US);
Assignee:
Avita Health and Fitness Products Inc., Redmond, WA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A63B / ; A63B / ;
U.S. Cl.
CPC ...
272 72 ; 272129 ; 272D / ; 272D / ;
Abstract
An exercise rowing machine has swing-mounted rowing arms with chopper plates at their lower ends which have a series of light-passing ports arranged along an arc to swing through the gaps between the emitters and receivers of a pair of side-by-side light emitter/receiver units. A circuit containing these units is connected to a microprocessor programmed for outputs, such as length and duration of rowing arm strokes, using inputs from the emitter/receiver units.