Trench ducts

Details Trench ducts Trench ducts

1984-06-18

1987-01-20

Pate, III, William F.

Static structures (e.g., buildings)

Tensioned or flexed sheet facing

174 48, 174 49, 4034051, 220 34, E04B 548

Patent

active

046371850

ABSTRACT:
Trench ducts for electrical distribution systems having side walls constructed and mountable in a manner: (a) so that they can be snapped into position on the floor; (b) so that they can be shifted axially from the initial position; and (c) so that they can be pulled away from the installed position and be completely removed.

REFERENCES:
patent: 3204378 (1965-09-01), Stessel et al.
patent: 3593472 (1971-07-01), Bargar
patent: 3701837 (1972-10-01), Fork
patent: 3886702 (1975-06-01), Fork
patent: 4040755 (1977-08-01), Jorgensen et al.
patent: 4173382 (1979-11-01), Booty
patent: 4420091 (1983-12-01), Thorpe et al.
Walkerduct.COPYRGT. Catalog, TD569, 1969.

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