Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – With electrothermal-actuating means
Patent
1985-11-08
1988-08-16
Grimley, Arthur T.
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
With electrothermal-actuating means
335133, 335202, 335281, 335297, H01H 5129
Patent
active
047647426
ABSTRACT:
Electric relay comprising one or more relay tongues, a relay contact cooperating with the respective tongue and an electromagnet actuating the respective tongue. A relay tongue unit (3) is then integral with at least one relay tongue (4), which has in one part an area reducing cross sectional dimension and is formed at its end opposite to the free end with a material cut portion (23) serving as an electric fuse. The surface of the relay contact (6) cooperating with the contact point (5) of the relay tongue is movable to a limited extent relative to this and, moreover, the electromagnet (9) actuating the relay tongue (4) consists of two composite iron plates (31, 32) electrically insulated from each other which have each, insulated from each other, an electric connection (34) integral with the iron plate, the coil (37) fed by the operating current of the electromagnet (9) being connected with one of its conducting ends (38) to one iron plate (31) and with its other end (39) to the other iron plate (32). The relay is sealed by means of a dust and moisture-proof, detachable cover means (17) having a portion (19) consisting of an elastic material, extending close to the respective relay tongue (4) and having a carrier means (20) substantially stationary relative to the relay, which carrier means is bendable with at least one part towards the portion (19) consisting of an elastic material.
REFERENCES:
patent: 2647188 (1953-07-01), Poitras
patent: 3059156 (1962-10-01), Moriya
patent: 3238344 (1966-04-01), Miachon
patent: 3869685 (1975-04-01), Buttel et al.
patent: 3893051 (1975-07-01), Shlesinger, Jr. et al.
patent: 4216453 (1980-08-01), De Feo
patent: 4337447 (1982-06-01), Lemmer
patent: 4491813 (1985-01-01), Kimpel et al.
Grimley Arthur T.
Lau Jane K.
Tocksfors Verkstads AB
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