Ball with unbalance mechanism

Details Ball with unbalance mechanism Ball with unbalance mechanism

1989-04-04

1990-05-15

Yu, Mickey

Amusement devices: toys

Rolling or tumbling

Including means for causing erratic movement

446324, 273 28, 273 65EC, A63H 1108, A63H 1700, A63B 3700, A63B 4100

Patent

active

049254286

ABSTRACT:
A toy having a rotational symmetric shape - elliptic or spherical in a section through its axis of symmetry - has an element inside which is movable along the axis of symmetry when the toy is rolling on the ground thereby causing the rolling toy to follow a tortuous path.

REFERENCES:
patent: 3106397 (1963-10-01), Lacey
patent: 3500579 (1970-03-01), Bryer
patent: 3874663 (1975-04-01), Kahle
patent: 4002893 (1977-01-01), Newcomb et al.
patent: 4471576 (1984-09-01), Martin

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