Electricity: conductors and insulators – Overhead – Towers – poles or posts
Patent
1973-12-26
1976-01-13
Kozma, Thomas J.
Electricity: conductors and insulators
Overhead
Towers, poles or posts
52221, 52232, 169 48, H02G 328
Patent
active
039326969
ABSTRACT:
An underfloor access housing adapted for use with cellular flooring units of the type normally placed in building floors, and which provide plural cells separated by troughs. The access housing presents a dual outlet opening in its top wall, spans across a trough, and is secured to the crests of adjacent cells. Trough closures positioned on opposite sides of the access housing, enclose a trough space accessible through the dual outlet opening. Cell access openings provided in the webs of the flooring unit establish communication between the cells and the trough space. A partition divides the interiors of the housing and of the trough space into separate compartments, each including one of the cell access openings and one including the dual outlet opening. The partition is adapted to support at least one electrical plug receptacle whereby electrical connections may be made beneath the level of the finished floor. Fireproofing material provided as an unobtrusive layer or layers serve to increase the fire resistance of the access housing.
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Abrams et al., Fire Tests of Poke-Thru Assemblies (RD008.01B) 1971, Portland Cement Association, Skokie, Illinois.
Albrecht Raymond E.
Fork Frank W.
Kelly Charles J.
Lindner Robert G.
H. H. Robertson Company
Keck Harry B.
Kozma Thomas J.
Manias George E.
Tone David A.
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