Electrical switchboard framework

Details Electrical switchboard framework Electrical switchboard framework

1976-10-27

1978-09-19

Bell, J. Karl

Static structures (e.g., buildings)

Intersection of wall to floor, ceiling, roof, or another wall

Trihedral shafts-type corner

52648, 52656, 312257SK, 361335, 403172, H02B 102

Patent

active

041143361

ABSTRACT:
A framework for an electrical switchboard comprises four angled uprights, and top and bottom angled crossbars. The uprights and crossbars each have the same cross section and are formed of sheet metal folded into four parts. The first part is contiguous with and perpendicular to the second part having the same width as the first part. The third part is narrower than the first part and is contiguous with and perpendicular to the second part, and is also contiguous with and perpendicular to a fourth part. The first and third parts are located on the same side of the second part, while the second and fourth parts are located on opposite sides of the third part.

REFERENCES:
patent: 1462617 (1923-07-01), Ohnstrand
patent: 2058263 (1936-10-01), Rosendale
patent: 2167525 (1939-07-01), Rosendale
patent: 3085664 (1963-04-01), Adams et al.
patent: 3110535 (1963-11-01), Anderson
patent: 3265419 (1966-08-01), Durnbaugh et al.
patent: 3353854 (1967-11-01), Hansen
patent: 3919603 (1975-11-01), Salvati et al.

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