Cable tray

- Square D Company
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Description

FIG. 1 is a perspective view of a cable tray showing our new design;

FIG. 2 is a side elevational view thereof, the opposite side being identical;

FIG. 3 is a front elevational view thereof, the rear view being identical; and

FIG. 4 is a top plan view thereof.

The rungs of the undisclosed bottom are U-shaped, with each leg of the U turned outwards at the top then downwards to form a snake-like sectional profile.

The rungs of the undisclosed bottom are substantially the same as that shown in FIG. 1.

Referenced Cited
U.S. Patent Documents
2863683 December 1958 Peterson et al.
2905416 September 1959 Wiegand
3521843 July 1970 Ogle
3598349 August 1971 Drake
3791613 February 1974 Nollen
Other references
  • Electrical Consultant, Sep.-Oct. 1983, vol. 63, p. 54, Fiberglass Cable Tray. Dahlstrom Metal Mouldings & Shapes, Cat. 12, 1969, p. 19, Channels. Electrical Construction & Maintenance, Mar. 1978, p. 147, Cable Tray. Electrical Consulting, vol. 60, Mar.-Apr. 1980, p. 41, Chalfont Cable Tray. Electrical Consultant, vol. 60, 1980, Nov.-Dec., p. 45, Robroy Fiberglass Cable Tray. Electrical Consultant, vol. 61, Sep.-Oct. 1981, pp. 66-67, Chalfont Steel Cable Tray.
Patent History
Patent number: D292974
Type: Grant
Filed: Sep 17, 1984
Date of Patent: Dec 1, 1987
Assignee: Square D Company (Palatine, IL)
Inventors: James M. Kenning (Cincinnati, OH), William K. McErlane (Cincinnati, OH), Barry R. Schuster (Union, KY)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Ruth E. Takemoto
Attorneys: Larry I. Golden, Richard T. Guttman, Mary R. Jankousky
Application Number: 6/651,506
Classifications
Current U.S. Class: D13/40