Amusement devices: toys – Operated by intrinsic temperature change
Patent
1998-02-26
2000-06-06
Muir, D Neal
Amusement devices: toys
Operated by intrinsic temperature change
446267, 434300, 40406, A63H 352, A63H 3300, G09F 1900, G09B 2306
Patent
active
060711655
ABSTRACT:
In accordance with the invention, a hollow, gas-containing diving body is disposed in a partially shaded transparent column partially-filled with a clear liquid. The diver is weighted for near-neutral buoyancy. The upper portion of the column is shaded, and the lower portion is subjected to thermal radiation such as sunlight. When radiation strikes the diver, it heats the gas, thereby increasing the gas volume, displacing liquid and increasing the buoyancy of the diver. The diver therefore rises to the shaded region where the gas cools, causing the diver to sink. The cycle repeats.
REFERENCES:
patent: 1454426 (1923-05-01), Clements
patent: 1796566 (1931-03-01), Herbst
patent: 2182570 (1939-12-01), Rosenblatt
patent: 2453177 (1948-11-01), Abramson
patent: 2638711 (1953-05-01), Tigrett
patent: 3387396 (1968-06-01), Smith
patent: 3733738 (1973-05-01), Kramer
patent: 4643693 (1987-02-01), Rubinstein
patent: 4675522 (1987-06-01), Weidinger et al.
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