Spiral cylinder toy

Details Spiral cylinder toy Spiral cylinder toy

1987-07-10

1989-08-29

Yu, Mickey

Amusement devices: toys

Including unattached gravity-fed rolling, tumbling, or...

A63H 3300

Patent

active

048613096

ABSTRACT:
A cylindrical toy having a first and second half each defining a semi-cylindrical body. Each of the halves has secured to its inner surface a plurality of substantially semi-circular flat plates which define a spiral passage when the halves are connected. The cylindrical halves have a bottom portion and the bottom portion of one half includes a bottom guide disk. The second half includes a reinforcing plate which is spaced from and disposed parallel to the bottom portion of the second half to form a space which receives the guide disk of the first half in order to accurately position the two halves with respect to each other prior to their being connected together.

REFERENCES:
patent: 2487168 (1949-11-01), Mordkin
patent: 2752725 (1956-07-01), Unsworth
patent: 2931131 (1960-04-01), Morse
patent: 3028704 (1962-04-01), Rumbaugh
patent: 3135512 (1964-06-01), Taylor
patent: 4720283 (1988-01-01), Williams et al.

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