Circuit board keying arrangement

Details Circuit board keying arrangement Circuit board keying arrangement

1979-02-08

1980-09-23

Goldberg, Howard N.

Geometrical instruments

339 75MP, 339176MP, H01R 1364, H05R 107

Patent

active

042239737

ABSTRACT:
A keying arrangement is disclosed for circuit boards (FIG. 1:1) and receptacles (2, 3, 4) to prevent the insertion of boards into any but correct receptacles.
The two guide rails (2, 3) of a circuit board receptacle aggregately comprise at least two spring devices (13, 37) located at prescribed coded locations (A through H, A' through H') along the guide rails. Each spring device comprises a projection (15) and each board contains indentations (FIG. 1:17, FIG. 2:22) associated individually with different ones of the projections. The indentations are located on the board such that one receives its associated projection during insertion of an incorrect type of board to prohibit further insertion.

REFERENCES:
patent: 3177461 (1965-04-01), Hagan et al.
patent: 3567998 (1971-03-01), Ammerman
patent: 3869185 (1975-03-01), Teagno
Dwg. No. A-554460, "927A,D Connector Assembly", Western Electric Co. 3/7/67.
Dwg. A-554506, "908D Connector Assembly", Western Electric Co., 4/22/70.

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