Shape sorting educational toy

Details Shape sorting educational toy Shape sorting educational toy

1991-03-15

1992-08-18

Hafer, Robert A.

Amusement devices: toys

Convertible from, or serving as diverse article

Including container or storing toy parts

446 74, 446489, 434259, A63H 3304, A63H 300, A63H 3300, G09B 1900

Patent

active

051394537

ABSTRACT:
A sorting device including an open top container with an invertible sorting member mounted thereover. The sorting member includes multiple funnel-shaped passages therethrough each having, at one end, an enlarged opening and at the second truncated end a specifically configured opening of a size to closely receive and pass therethrough only a correspondingly configured block introduced in either direction through the configured opening.

REFERENCES:
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patent: D231738 (1974-06-01), Brass
patent: D282940 (1986-03-01), Thomson et al.
patent: 741903 (1903-10-01), Gates
patent: 2377100 (1945-05-01), Patterson
patent: 2623303 (1952-12-01), Mindel
patent: 2747297 (1956-05-01), Zalkind
patent: 2911740 (1959-11-01), Miller
patent: 3280499 (1966-10-01), Studen
patent: 3434232 (1969-03-01), Tarrson
patent: 3760511 (1973-09-01), Matsumoto
patent: 4008526 (1977-02-01), Swett et al.
patent: 4149717 (1979-04-01), Seijiro
patent: 4195421 (1980-04-01), Tucker et al.
patent: 4353701 (1982-10-01), Greenberg
patent: 4508512 (1985-04-01), Girsch et al.
patent: 4988321 (1991-01-01), Goldfarb
Pots 'n Spoon, Ideal Catalogue; 1976, p. 36.

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