Electricity: conductors and insulators – Overhead – Towers – poles or posts
Patent
1988-12-12
1990-06-05
Picard, Leo P.
Electricity: conductors and insulators
Overhead
Towers, poles or posts
174 57, H02G 308
Patent
active
049315978
ABSTRACT:
A junction box apparatus for an electrical raceway system to be placed in a floor includes a base and a removable access unit. A removable tunnel insert is provided which can be inserted down through the access unit after the access unit is mounted upon the base. The tunnel insert defines a plurality of passages through the junction box. A removable extension collar is also provided which is adapted to be sandwiched between the base and the access unit for determining a nominal height of the junction box apparatus. Also, removable duct separators having spring metal clips with serrated edges are provided which are adapted to be connected to the base for separating a plurality of ducts received in the duct openings. By a combination of the removable tunnel insert, the removable extension collar, and the removable duct separators, a basic base and access unit assembly can be readily modified to be compatible with a plurality of duct combinations and arrangements and a plurality of floor thicknesses.
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Exhibit A--A Catalog Entitled "Underfloor Duct" published Jul. 1983, by Square D Company.
Exhibit B--Square D Company Digest No. 167, pp. 160-161, Mar. 1988.
Exhibit C--A Drawing of a Typical Tunnel Divider Utilized with Square D Company's CELL-DUCT Product.
Exhibit D--Catalog WD 483R Entitled "Walkerduct.RTM. Underfloor Distribution Systems" published by Walker, A Division of Butler Mfg. Co., Parkersburg, W. Va.
Exhibit E--Brochure No. WC784R Titled "Walkercell.TM. Cellular Raceway System for Reinforced Concrete Construction" published by Walker, A Division of Butler Manufacturing Company, Parkersburg, West Virginia.
Chapman Donald L.
Kimbrough Robert L.
Golden Larry I.
Jimenez Jose W.
Lowe, Jr. James E.
Picard Leo P.
Square D Company
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