Card – picture – or sign exhibiting – Display with special effects – Selective or intermittent illumination
Patent
1978-10-18
1980-12-02
Pitrelli, John F.
Card, picture, or sign exhibiting
Display with special effects
Selective or intermittent illumination
40455, 40540, 40553, 40902, 40906, 200 40, 368 12, G09F 1300, G09F 2700
Patent
active
042363357
ABSTRACT:
A miniaturized housing or display device including at least one electric circuit adapted to be connected to an electric current supply. The electric circuit includes at least one switch. The housing further is adapted to receive a mechanical alarm clock that has a movement winder and an alarm winder. A counterweight is attached to hang from each of the winders such that each of the counterweights abuts against a corresponding switch in each of the circuits when the mechanical alarm clock is inserted in the compartment and the counterweights descend as a result of the movement of each of the winders.
REFERENCES:
patent: 811589 (1906-02-01), Shatto et al.
patent: 862344 (1907-08-01), Neumann et al.
patent: 870404 (1907-11-01), Wood
patent: 1037818 (1912-09-01), Brown
patent: 2821621 (1958-01-01), Allunario
patent: 3696358 (1972-10-01), Vasku
Pitrelli John F.
Skillington G. Lee
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