Geometrical instruments
Patent
1980-06-13
1982-07-20
McGlynn, Joseph H.
Geometrical instruments
H01R 1344
Patent
active
043402674
ABSTRACT:
A safety electrical plug comprising a casing formed by a pair of identical portions provided with cooperating cord insertion opening forming means, ribs and rib-support means, a spring-loaded blade covering member, a pair of plug blades supported by said rib-support means and extending through the covering member and a spring housing having a spring received therein to normally bias the blade covering member to its extended position.
REFERENCES:
patent: 3575684 (1971-04-01), McIntyre
Brown John S.
McGlynn Joseph H.
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