Coil for an electromagnetic relay having delayed switching

Details Coil for an electromagnetic relay having delayed switching Coil for an electromagnetic relay having delayed switching

1988-12-23

1990-01-23

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

335250, H01F 710

Patent

active

048961264

ABSTRACT:
In a coil for an electromagnetic relay, a delayed response is achieved by a short-circuit tube which carries the coil member and replaces a plastic tube which is otherwise used. The short-circuit tube is extrusion coated at its ends with the coil flanges so and a thin insulating layer is provided on the short-circuit tube under the winding in the region between the flanges. The dimensions of the winding and the core are not increased while a considerable delayed response for the relay is provided.

REFERENCES:
patent: 1789417 (1931-01-01), Shepard
patent: 1809634 (1931-06-01), Lazich
patent: 1979709 (1934-11-01), Schaelchlin et al.
patent: 3421127 (1969-01-01), Fischer et al.
patent: 4302743 (1981-11-01), Araki

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