Misconnection-proof key and connector using the same

Details Misconnection-proof key and connector using the same Misconnection-proof key and connector using the same

2005-03-22

2005-03-22

Vu, Hien (Department: 2833)

Electrical connectors

With insulation other than conductor sheath

Plural-contact coupling part

C439S607070

Reexamination Certificate

active

06869319

ABSTRACT:
A misconnection-proof key comprises a substantially L-shaped block made of a hard metal including a short arm and a long arm intersecting with the short arm at right angles thereto. The long arm has at a substantially mid portion on its surface a removal preventing protrusion integrally formed therewith. A plurality of misconnection-proof keys thus constructed are used in a connector including an insulating block having a number of contacts, and a metal shell partly covering the insulating block on the side of contact portions of the contacts. The plurality of misconnection-proof keys are each inserted with the long arm into a slot formed at a predetermined position between the insulating block and the metal shell until the removal preventing protrusion is fitted in a removal preventing recess or aperture formed in the slot so that the short arm of the key extending outwardly of the slot. The connector is prevented from being connected to a wrong or improper connector not having notches corresponding to the outwardly extending short arms of the misconnection-proof keys.

REFERENCES:
patent: 3287031 (1966-11-01), Simmons et al.
patent: 3611272 (1971-10-01), Fairbairn et al.
patent: 4345813 (1982-08-01), Hatch
patent: 4773881 (1988-09-01), Adams, III
patent: 4904194 (1990-02-01), Kilsdonk et al.
patent: 5066250 (1991-11-01), Welsh
patent: 5178561 (1993-01-01), Lindeberg et al.
patent: 5402320 (1995-03-01), Kielstra et al.
patent: 6095870 (2000-08-01), Lee

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