Geometrical instruments
Patent
1980-10-06
1983-04-12
McGlynn, Joseph H.
Geometrical instruments
H01R 1344
Patent
active
043796079
ABSTRACT:
An electrical receptacle has shuttered slots for preventing the entry of foreign objects into the slots other than the prongs of an electrical plug. A housing within the cover of the receptacle is located behind the receptacle slots. A shutter is located within the housing and is formed of two identical sliding members guided by a stationary member. Each of the sliding members is formed of a blade and a cam which are spaced apart by a distance corresponding to the spacing of a pair of slots, and are mounted transversely to a connecting spine. The blade and the cam of each of the sliding members are offset in both transverse and longitudinal directions from each other about the spine in order to permit an interleaving of the blade of one sliding member with the cam of the other sliding member. The sliding members are positioned with their spines in opposed positions and in contact with opposite sides of the stationary member.
REFERENCES:
patent: 2155925 (1939-04-01), Blinn
patent: 2528014 (1950-10-01), Moses, Jr. et al.
patent: 2545536 (1951-03-01), Von Holtz
patent: 2553837 (1951-05-01), Von Holtz
patent: 2701347 (1955-02-01), Davidsson
patent: 2820842 (1958-01-01), Meistrell
patent: 3736547 (1973-05-01), Koenig
patent: 4072382 (1978-02-01), Reschke
patent: 4271337 (1981-06-01), Barkas
McGlynn Joseph H.
Slater Electric Inc.
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