Circuit protecting sensor

Details Circuit protecting sensor Circuit protecting sensor

1982-04-06

1984-01-24

Broome, Harold

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

335 62, H01F 718, H01H 4302

Patent

active

044279590

ABSTRACT:
A circuit protecting sensor comprises a cylinder divided into two cylinder members with a common magnetic head interposed between them, one of which members contains a viscous fluid sealed therein and an oil plunger and the other member contains an operating plunger projecting partly out of the cylinder, and the respective plungers are biased by a spring normally away from the magnetic head. When a short-circuit current is detected by a coil wound on the cylinder, the operating plunger is immediately attracted by the magnetic head independently of the oil plunger prior to its attraction to the magnetic head.

REFERENCES:
patent: 2462753 (1949-02-01), Kyle, Jr. et al.
patent: 2519291 (1950-08-01), Sandin et al.
patent: 2690528 (1954-09-01), Wilckens
patent: 2698404 (1954-12-01), Edwards
patent: 3226605 (1965-12-01), Wright et al.
patent: 3943476 (1976-03-01), Iyeta

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