Plug-in jack card for normally closed contacts

Details Plug-in jack card for normally closed contacts Plug-in jack card for normally closed contacts

1990-11-15

1993-04-06

Dwyer, James L.

Electrical connectors

With selectable circuit, e.g., plug board

Including three or more contacts adapted to be selectively...

361415, 439 61, 439188, 439668, 379 1, 379329, 379332, H01R 2900, H01R 909, H02B 1056, H05K 714

Patent

active

051998785

ABSTRACT:
An apparatus is disclosed for providing access to plurality of telecommunication lines. The apparatus includes a frame which carries a plurality of normally closed contacts. The telecommunication lines are terminated on the normally closed contacts. A plurality of modules are provided to be releasably attached to the frame with electrical circuit elements on the modules engaging the normally closed contacts to open the contacts and create a new signal path through the module upon insertion of the module into the frame.

REFERENCES:
patent: 4017770 (1977-04-01), Valfre
patent: 4087151 (1978-05-01), Robert et al.
patent: 4106841 (1978-08-01), Vladic
patent: 4286121 (1981-08-01), Olszewski et al.
patent: 4514030 (1985-04-01), Triner et al.
patent: 4840568 (1989-06-01), Burroughs et al.
patent: 4941165 (1990-07-01), Rademacher et al.

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