Education and demonstration – Geography – Terrestrial globe or accessory therefor
Patent
1994-11-10
1996-08-13
O'Connor, Cary E.
Education and demonstration
Geography
Terrestrial globe or accessory therefor
434143, 434145, G09B 2708
Patent
active
055450415
ABSTRACT:
An earth globe includes a base and a hollow globe body made of translucent material and having a spherical configuration corresponding substantially to the earth. A first support mechanism serves to rotatably support the globe body relative to the base around a first axis corresponding substantially to the earth axis. An illumination device and a shading device are disposed within the globe body. The shading device serves to shade light from the illumination device over a substantially half region of the globe body. A second support mechanism is provided to rotatably support the shading device relative to the globe body around a second axis corresponding substantially to an axis perpendicular to the orbital plane of revolution of the earth around the sun. A first and a second drive device are provided to rotate the globe body around the first axis at a first rotational speed and to rotate the shading device around the second axis at a second rotational speed different from the first rotational speed, respectively.
REFERENCES:
patent: 1959601 (1934-05-01), Schulse
patent: 3305946 (1967-02-01), Gardin
patent: 4102121 (1978-07-01), Veazey
patent: 4493648 (1985-01-01), Suzuki
patent: 4666310 (1987-05-01), Snapka
patent: 4714351 (1987-12-01), Domen
patent: 4936779 (1990-06-01), Carlson
Kazuyuki Katsuno
O'Connor Cary E.
Smith Jeffrey A.
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