Metal working – Method of mechanical manufacture – Electrical device making
Patent
1992-07-23
1993-12-14
Echols, P. W.
Metal working
Method of mechanical manufacture
Electrical device making
29464, 295271, 200148A, 264275, H01H 1100
Patent
active
052690555
ABSTRACT:
In the course of the assembly of a circuit-breaker pole, the individual parts of a housing are stacked loosely one on top of the other and fixedly positioned. This fixing can be accomplished by applying subatmospheric pressure or a partial vacuum within the housing and/or by means of a holding device. Spaces open in the upward direction and located between a fitting and a support insulator as well as between a fitting and a quenching-chamber insulator are then filled with casting material. After this casting material has at least partially hardened, the circuit-breaker pole is turned upside down by rotating the holding device about a horizontal axis, whereupon spaces now open in the upward direction and located between a fitting and the quenching-chamber insulator as well as between a fitting and the support insulator are filled with casting material. This renders possible simple assembly, self-acting mutual alignment of contact pieces as well as a leak test prior to final assembly of the circuit-breaker pole.
REFERENCES:
patent: 2374058 (1945-04-01), Webb et al.
patent: 3683141 (1972-08-01), Fawdrey et al.
patent: 4831220 (1989-05-01), Noack et al.
Echols P. W.
Sprecher Energie AG
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