Variable action quincunx pinplate

Details Variable action quincunx pinplate Variable action quincunx pinplate

1990-06-04

1992-01-14

Apley, Richard J.

Education and demonstration

Mathematics

273120R, G09B 2300

Patent

active

050805924

ABSTRACT:
A statistics teaching aid of the Quincunx type. The device includes a pinplate which has at least one movable row of pins. Shifting of the movable pinrow effectively increases or decreases the number of pinrows on the pinplate. By shifting the pinrow, an operator can alter the shape of the resulting distribution of balls.

REFERENCES:
patent: 1531401 (1925-03-01), Kawai
patent: 1534390 (1925-04-01), Horton
patent: 1636893 (1927-07-01), Biberfeld
patent: 2742291 (1956-04-01), Simon
patent: 3433484 (1969-03-01), Wallenmeyer
patent: 3758113 (1973-07-01), Trbovich et al.
patent: 3951412 (1976-04-01), Adams
patent: 4900255 (1990-02-01), Laghi

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