Title: Answer-spotting electric instrument

Abstract: An answer-spotting electric instrument which is provided with a counter so as to totalize the number of correct answers. The answer-spotting electric instrument having the counter is of the type which is provided with a pair of adjoining terminal members, an electric circuit formed between said terminal members and a signalling device connected to the electric circuit. In using the instrument, the correctness of an answer is recognized by bringing the pair of the terminal members into contact with an answer marking which is made of an electro-conductive material when the answer is correct. The counter of the answer-spotting electric instrument has a counter button to add necessary numbers one by one, a numerical indicator to display the counted number and a reset lever to return the indicated number to zero.

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Other info:

Inventors: Takahashi, Kenji

Application Number: 951792
Filing Date: 1978-10-16
Publication_date: 1980-03-25
Assignee:
Primary Class(es): 434/341
Other Classes:
US Patent Ref:

2546666	Mar, 1951	Fleischer	35/9.
3141243	Jul, 1964	Chapman et al.	35/9.
3177595	Apr, 1965	Yonker et al.	35/9.
3509643	May, 1970	Kane	35/9.
3541706	Nov, 1970	Shapiro	35/9.
3774318	Nov, 1973	Sterriti	35/35.
3835553	Sep, 1974	Kirton et al.	35/9.
4115931	Sep, 1978	Futhey	35/9.

Other Refs:
Primary Examiner: Hum, Vance Y.
Assistant Examiner:
Attorney: Blanchard, Flynn, Thiel, Boutell & Tanis