Stoves and furnaces – Tool having fluid fuel burner – Soldering iron
Patent
1985-09-16
1987-11-17
Focarino, Margaret A.
Stoves and furnaces
Tool having fluid fuel burner
Soldering iron
126429, 350264, F24J 302
Patent
active
047066490
ABSTRACT:
A unitary structure is provided comprises a frame, including perimeter portions, transparent panels, a pair of spaced rollers rotatable about parallel axes, and a sheet rolled up on the rollers. The sheet has separate and distinct portions which have varying light transmission properties for affecting the amount and/or wave length of natural light that passes through the sheet. Each sheet separate and distinct portion has the approximate height and width of the chamber defined by perimeter portions of the frame. Synchronous motors for rotating the rollers are disposed in cavities formed in the frame perimeter portions, and photoelectric control components are also provided. Vents are provided in the frame adjacent the top and bottom for selectively allowing or preventing the passage of air into the chamber.
REFERENCES:
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patent: 3832992 (1974-09-01), Trombe et al.
patent: 4112918 (1978-09-01), Palkes
patent: 4220137 (1980-09-01), Tesch et al.
patent: 4228787 (1980-10-01), Steinemann
patent: 4280480 (1981-07-01), Raposo
patent: 4382436 (1983-05-01), Hager
patent: 4495937 (1985-01-01), Fisher
patent: 4512332 (1985-04-01), Lansing
patent: 4552205 (1985-11-01), Saunders
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