Electricity: conductors and insulators – Boxes and housings – Hermetic sealed envelope type
Patent
1997-09-19
2000-08-01
Reichard, Dean A.
Electricity: conductors and insulators
Boxes and housings
Hermetic sealed envelope type
220 34, H02G 312, H02G 314
Patent
active
060969725
ABSTRACT:
One embodiment of a non-metallic floor box for use in electrical in-floor power and communication distribution systems for office buildings and the like includes a closed housing having a base, a top and vertically extending side walls defining an interior volume. The floor box prevents concrete from entering the housing during pouring and setting of the concrete floor, and is adapted to be cut off substantially flush with and parallel to the concrete floor in which it is set. The floor box housing includes gradient markings disposed on at least one of its side walls to indicate the interior volume of the housing and/or the depth of the concrete floor.
REFERENCES:
patent: 1454722 (1923-05-01), Boutin
patent: 2028509 (1936-01-01), Knell
patent: 3343704 (1967-09-01), Terry
patent: 4428492 (1984-01-01), Jorgensen
patent: 4623170 (1986-11-01), Cornwall
patent: 4818822 (1989-04-01), Yahraus
patent: 5257487 (1993-11-01), Bantz et al.
patent: 5360130 (1994-11-01), Lehmann et al.
Bowman Timothy
Domigan Charles
Stauffer John
Young Joe
Reichard Dean A.
Walker Systems, Inc.
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