Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific current responsive fault sensor
Patent
1976-12-17
1978-05-02
Claffy, Kathleen H.
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific current responsive fault sensor
361399, H04Q 102
Patent
active
040876489
ABSTRACT:
A modular connector, to be assembled with other such connectors into a switching frame designed to interlink incoming and outgoing lines of a telecommunication system, comprises a flat prismatic housing of generally rectangular outline with a bank of input terminals and a bank of output terminals fitted into a pair of recesses on its opposite longitudinal edges. Leads extending from the two terminal banks within the housing are bent to emerge at a major housing surface overlain by a printed-circuit board whose conductor strips connect them with two further sets of leads emerging from the same major surface adjacent one of its transverse edges, the leads of these letter sets extending into a junction box attached to the housing along that transverse edge. Within the junction box, normally closed by a hinged door, contacts tied to the two sets of leads can be selectively interconnected or, if desired, extended to testing equipment.
REFERENCES:
patent: 3324353 (1967-06-01), Retzlaff et al.
patent: 3462558 (1969-08-01), Selz
patent: 3755630 (1973-08-01), Boyer
patent: 3970802 (1976-07-01), Nijman
patent: 4017768 (1977-04-01), Valfre
patent: 4017770 (1977-04-01), Valfre
Telecomunicazioni (Italy), "Mechanical Structure of Telephone Multiplex MTN2", L. Antola, F. Bebber, G. Giacoppo, No. 47, Jun. 1973, pp. 117-126.
Claffy Kathleen H.
Myers Randall P.
Ross Karl F.
Societa Italiana Telecomunicazioni Siemens S.p.A.
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