Card – picture – or sign exhibiting – Display device with free article movement
Patent
1996-03-27
1997-08-12
Dorner, Kenneth J.
Card, picture, or sign exhibiting
Display device with free article movement
40414, 40430, 446357, 446267, G09F 1908
Patent
active
056553218
ABSTRACT:
A water ball structure includes a base defining a cylindrical housing to received therein a music box type driving device and support thereon a water ball. The driving device is fixed on a disk which is received within a bottom opening of the housing and snap-held by resilient paws formed on the housing. A circumferential wall is provided to fix to and concentrically surround the housing. A rotation ring is supported on the circumferential wall by a ball bearing arranged on the top of the wall so as to allow the rotation ring to be rotatable relative to the housing in a concentric manner by being driven by the driving device through a gear train coupling therebetween. A toothed ring is fit over the housing and snap-held by paws provided on the housing. A number of motion generation devices are provided on the rotation ring, each having a first gear rotatably supported by an output shaft on the rotation ring and a second gear mating between the first gear and the toothed ring so that when the rotation ring rotates about the cylindrical housing, the output shaft of the first gear generates a rotation output through the engagement of the second gear with the toothed ring. A ball support collar is fit into the housing and snap-held by paws formed on the housing to support the water ball.
REFERENCES:
patent: 3768199 (1973-10-01), Goldfarb
patent: 5134795 (1992-08-01), Wang
patent: 5458012 (1995-10-01), Liu
Davis Cassandra
Dorner Kenneth J.
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