Geometrical instruments
Patent
1980-07-23
1982-10-05
McQuade, John
Geometrical instruments
339217PS, H01R 3304
Patent
active
043525407
ABSTRACT:
An improved electrical plug comprises two housings, wherein the lower housing has two stop blocks formed symmetrically on the inside rim thereof, a cross-shaped division plate on its center portion, a plurality of protrusions provided on both surfaces of the stop blocks and the division plate for securing two twisted conducting prongs in their appropriate position by engaging orifices at the end surfaces of the conducting prongs with the protrusions for quick and safe connection and/or disconnection with respect to the lower housing.
REFERENCES:
patent: 994516 (1911-06-01), Hubbell
patent: 2272432 (1942-02-01), Rogie
patent: 2918647 (1959-12-01), Britt
patent: 3273105 (1966-09-01), Klassen
patent: 3313905 (1967-04-01), Zagorski
Brown John S.
McQuade John
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