Circuit interlock arrangement

Details Circuit interlock arrangement Circuit interlock arrangement

1981-10-23

1983-11-29

McQuade, John

Geometrical instruments

339 75MP, 339 91R, H01R 2370

Patent

active

044177780

ABSTRACT:
An interlock arrangement utilizes a modification of printing circuit boards (11 and 41) and spring loaded locking levers (23 and 24). One printed circuit board (11) includes notches or detents (25 and 26) in which the locking levers rest to prevent the removal of the board after being inserted into its connectors (13-15). In order to remove the board, another printed circuit board (41) is utilized which has tapered portions (42 and 43) that displace the locking pins from the detents in the process of being inserted into auxiliary connectors (44 and 46). Thus, the first board may be removed while the second board provides a predetermined circuitry status via the interconnection of the two sets of connectors.

REFERENCES:
patent: 3150906 (1964-09-01), Chambon et al.
patent: 3270253 (1966-08-01), Binder et al.
patent: 3278714 (1966-10-01), Bernutz
patent: 3537063 (1970-10-01), Beaulieu
patent: 3594699 (1971-07-01), Jayne et al.
patent: 3697929 (1972-10-01), Konewko et al.
patent: 3767974 (1973-10-01), Donovan, Jr. et al.
patent: 3778753 (1973-12-01), Occhipinti et al.
patent: 3932016 (1976-01-01), Ammenheuser
patent: 3952232 (1976-04-01), Coules
patent: 4069403 (1978-01-01), Beaudette et al.
IBM Technical Disclosure Bulletin, vol. 15, No. 8, Jan. 1973, "Low Insertion Force Connector-Circuit Card Actuated"; Doody.

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