Electricity: conductors and insulators – Overhead – Towers – poles or posts
Patent
1978-07-21
1979-12-11
Reynolds, Bruce A.
Electricity: conductors and insulators
Overhead
Towers, poles or posts
52221, 174 57, H02G 328
Patent
active
041784693
ABSTRACT:
A closure device comprising an insert and capping means. The insert includes first, second and third generally U-shaped members. The first and second members cooperate with a lengthwise trough of the sheet metal element to provide laterally spaced-apart vertically presented chambers and a horizontal passageway therebetween. The capping means enclose those portions of the lengthwise trough on opposite sides of the first and second members to provide a substantially unobstructed additional raceway including the passageway. The third element which may be provided during installation of the closure device or during activation of the closure device caps the passageway and supports an electrical plug receptacle proximate to the finished surface of the floor for ready access. At least one additional electrical plug receptacle may be supported by either of the first and second members for access from the interior of one of the vertically presented chambers.
REFERENCES:
patent: 3592956 (1971-07-01), Fork
patent: 3701837 (1972-10-01), Fork
patent: 3903666 (1975-09-01), Fork
patent: 3932696 (1976-01-01), Fork et al.
patent: 4010314 (1977-03-01), Kohaut
patent: 4012873 (1977-03-01), Lindner
H. H. Robertson Company
Keck Harry B.
Manias George E.
Reynolds Bruce A.
Tone D. A.
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