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. 13, 1983
Filed:
Sep. 21, 1981
Kyu S Cho, Seoul, KR;
Other;
Abstract
A self-teaching instrument designed to enable answering a multiple-choice test rapidly and precisely has a separate card compartment attached to the lower front of the unit. Cards can be pushed out vertically one at a time by a roller which is controlled by a driving portion. A card carrier with two hooks transports the card from the card compartment to a predetermined position by a conveyer. On both sides of the conveyer conductive films are attached at six equally divided places. The conductive films aid in locating the holes on the card for hole detectors. In the top row, on the top of the instrument, there are four switches for selecting answers. In the lower row there are the power switch, reverse and forward switch buttons. The upper portion of the switch panel has a transparent viewing screen for visualizing a problem and selected answers. For simplified viewing this is built at a slight angle. Beyond this screen there are correct or wrong answer indicators, counters, speaker and a card recovery container.