Numeral adding toy
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United States of America Patent
Stats
-
Jan 11, 1983
Grant Date -
N/A
app pub date -
Jul 15, 1981
filing date -
Jul 15, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A numeral adding toy including an arrangement for rotationally indexing in a cooperative manner two rotary wheels displaying numerals to be added and a single rotary wheel displaying the added sum answer by means of a rotationally indexing mechanism including pins or ratchets. The wheel displaying the added answer is rotated the summed number of indexes of the two wheels displaying the numerals to be added. The wheels, having been rotationally indexed, are rotationally returned by means of a releasing mechanism.
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Family
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Cited Art Landscape
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