Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board
Patent
1976-04-28
1977-09-06
Henry, Jon W.
Coating processes
Electrical product produced
Integrated circuit, printed circuit, or circuit board
350320, 427130, 427 47, 52 2, G02B 510, E04G 1104
Patent
active
040464628
ABSTRACT:
A tracking three-dimensional solar energy concentrator is provided by a stretched aluminized polymeric membrane supported by a hoop, the polymeric membrane being formed to a desired curvature by differential loading. The loading on the polymeric membrane determines its curvature. The loading can be varied by utilizing a plastic membrane that has a non-uniform radial distribution of thickness with uniform differential pressure or by applying a non-uniform differential pressure on a membrane having uniform thickness. Reflector membranes having a non-uniform radial distribution of thickness can be obtained by selective spraying of a dissolved plastic such as Krylon on the underside of the aluminized membrane. A non-uniform differential pressure is obtained by using a uniform differential pressure in combination with localized electrostatic or magnetic pressure. The membrane concentrator and its supporting equipment is maintained in a slightly pressurized spherical-cap envelope of transparent plastic to protect the concentrator from the elements.
REFERENCES:
patent: 3353309 (1967-11-01), Kwake
patent: 3420469 (1969-01-01), Johnson et al.
patent: 3605107 (1971-09-01), Amboss
patent: 3972600 (1976-08-01), Cobarg
Fletcher James C. Administrator of the National Aeronautics and Space
Miller Charles G.
Pohl Jens G.
Grifka Wilfred
Henry Jon W.
Manning John R.
Mott Monte F.
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