Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent
1992-07-24
1994-02-15
Scott, J. R.
Electricity: circuit makers and breakers
Liquid contact
Time delay
H01H 3366
Patent
active
052869326
ABSTRACT:
A vacuum bulb for interrupting an electrical circuit, the bulb comprising two electrical poles enabling an electrical connection to be established between the outside and interrupting contacts placed inside the bulb, the body of the bulb being dielectrically reinforced by an outside insulator disposed on the bulb between the two electrical poles, wherein the insulator is constituted by a polymer sheath heat-shrunk directly onto the body of the bulb.
REFERENCES:
patent: 2870298 (1959-01-01), Schwager
patent: 2872550 (1959-02-01), Schwager
patent: 3594525 (1971-07-01), Miller et al.
patent: 3855435 (1974-12-01), Himi
patent: 3955167 (1976-05-01), Kumberg
patent: 4393286 (1983-07-01), Takagi
patent: 4618749 (1986-10-01), Bohme et al.
patent: 4661791 (1987-04-01), Wakasugi et al.
Descazeaux Michel
Rouch Robert
GEC Alsthom SA
Scott J. R.
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