Device driven by heat energy

Details Device driven by heat energy Device driven by heat energy

1979-07-27

1981-12-29

Ostrager, Allen M.

Power plants

Utilizing natural heat

Solar

60527, 6064113, 60530, 60675, 185 7, F03G 702, F03G 706

Patent

active

043075711

ABSTRACT:
A rotatable device having outwardly extending weighted arms of thermally expandable material is supported for rotation about an axis arranged at an angle to the vertical. The device is exposed to the sun or other source of radiant energy, causing the arms to expand lengthwise. A sun shield is provided over a portion of the area of movement of the arms so that when they move out of the shade of the shield, they expand lengthwise and whey they move into such shade, they contract. The resultant differential lengthening of the arms establishes an unbalance of moments of gravitational force in the arms to thereby apply a continuous torque to the assembly.

REFERENCES:
patent: 1055439 (1913-03-01), Anderson
patent: 2878641 (1959-03-01), Decker
patent: 4006594 (1977-02-01), Horton
patent: 4236377 (1980-12-01), Weinert

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