Enclosure structure for circuit breaker assemblies and similar a

Receptacles – Sectional – Knockdown

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Details

220 84, 312108, 312257R, 312257SK, B65D 624, B65D 628, A47B 5500

Patent

active

046500855

ABSTRACT:
An enclosure structure for housing switchgear apparatus (such as circuit breakers) is fabricated from a pair of sheet metal panels that are held in precisely-spaced upstanding relationship by a plurality of metal cross-struts of U-shaped cross-section which mechanically interlock with apertured portions of the panels and are held in such position by triangular-shaped metal gussets which overlap and are bolted to adjacent portions of the cross-struts and panels. The cross-struts are provided with longitudinally protruding tangs at each end that are slip-fitted into and interlock with slot apertures in the panels. The width dimension of the finished enclosure structure is precisely controlled by positioning tabs on the ends of the cross-struts that are offset from the associated tangs and are drawn into abutting relationship with the inner surfaces of the respective panels when the structure is bolted together. Construction and assembly of the enclosure structure is accordingly achieved without the expensive tooling, jigs and welding operations heretofore required to manufacture such structures.

REFERENCES:
patent: 1194532 (1916-08-01), Melink
patent: 1735375 (1929-11-01), Card
patent: 1917764 (1933-07-01), Howie
patent: 2542563 (1951-02-01), O'Neill
patent: 3160305 (1964-12-01), Smith
patent: 3738726 (1973-06-01), Burst
patent: 4116510 (1978-09-01), Franco
patent: 4274547 (1981-06-01), Takagi et al.

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