Explosion-proof or flame-proof plug having a transformer dispose

Details Explosion-proof or flame-proof plug having a transformer dispose Explosion-proof or flame-proof plug having a transformer dispose

1985-04-12

1987-06-30

Kozma, Thomas J.

Inductor devices

With outer casing or housing

310 88, 336 92, 336 96, 336107, H01F 2702

Patent

active

046774114

ABSTRACT:
An explosion-proof plug includes a first casing part having two ends and an outer wall having an edge and defining a compression-resistant annular chamber being open toward one of the ends, an annular transformer disposed in the annular chamber, a cover secured to the first casing part covering the annular chamber and the transformer, a second substantially bowl-shaped casing part adjacent the edge of the outer wall, the second casing part and the cover together defining a first connection space with increased security as compared to other portions of the plug for receiving connecting cables to be connected to the transformer, a third casing part securely connected to the first casing part defining a second space of increased security, and plug pins being held in the third casing part and connected to the transformer.

REFERENCES:
patent: 2875419 (1959-02-01), Lear, Sr.
patent: 3201729 (1965-08-01), Blanchi et al.
patent: 3211959 (1965-10-01), Kirk
patent: 3259861 (1966-07-01), Walker
patent: 4024484 (1977-05-01), Tomczak et al.

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