Sunshield device

Details Sunshield device Sunshield device

1986-04-29

1988-05-10

Green, Randall L.

Stoves and furnaces

Tool having fluid fuel burner

Curling iron

126DIG1, 353 3, F24J 238

Patent

active

047428139

ABSTRACT:
A signal generator equipped with a shading device and two light sensors is arranged on the upper side of a slat equipped with retro-reflective prisms and rotatable about a longitudinal axis. Depending upon the sun's position relative to the slat, the light sensors are variously shaded or illuminated by means of the shading device, and when the slat is rotated about its longitudinal axis, the light sensors supply electrical code values which change in opposing directions. A difference between the code values is fed via an amplifier to a servo-motor which rotates the slat about its longitudinal axis until the plane of incidence of the sun's rays, which passes through the longitudinal axis, is at right angles to the upper side of the slat. This ensures that sun's rays which hit the slat are reflected regardless of the sun's position, the time of year, and the alignment of the facade plane in which the slat is arranged.

REFERENCES:
patent: 2022144 (1935-11-01), Nicolson
patent: 2712772 (1955-07-01), Trombe
patent: 4154219 (1979-05-01), Gupta et al.
patent: 4314546 (1982-02-01), Miller
patent: 4439020 (1984-03-01), Maruko
patent: 4484565 (1984-11-01), Mori
patent: 4517960 (1985-05-01), Bartenbach

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