Geometrical instruments
Patent
1980-11-20
1986-12-30
McGlynn, Joseph H.
Geometrical instruments
H01R 1344
Patent
active
046324798
ABSTRACT:
A safety-type terminal for an electrical extension cord, which protects against electrical shock and burn, comprises an elongated, elastomeric, non-conductive body; pairs of internal female contact strips which are spaced apart longitudinally of the body; contact slots for each female contact strip spread apart transversely of the body; and prong-admitting passageways from the exterior surface of the body to the female contact strips. The terminal further comprises electrically non-conductive safety guards each of which is arranged in line and beneath the mouths of a different pair of female contact slots. The safety guards contain prong-passing openings, the spacing of which matches the spacing of the body passageways. The safety guards are independently mounted so that they can reciprocally slide transversely to the length of the body in response to manual manipulation by a user between stops which define: a closed position in which the openings of each safety guard are disaligned with the passageways of the body and the safety guard blocks entry of an electrical prong through said body passageways, and an open position in which the openings of each safety guard are aligned with the passageways of the body, to thereby permit entry of the prongs through said body passageways. Thus, the safety guards can be manipulated into a position which will prevent accidental insertion of objects into the body passageways when said passageways are not engaged by an electrical plug.
REFERENCES:
patent: 2559151 (1951-07-01), Getzoff
patent: 2610999 (1952-09-01), Silver
patent: 3810070 (1974-05-01), Ludwig
patent: 4094569 (1978-06-01), Dietz
patent: 4206957 (1980-06-01), Ludwig et al.
patent: 4257659 (1981-03-01), Gibbs
patent: 4279457 (1981-07-01), Nickence
Gem Electric Manufacturing Co., Inc.
McGlynn Joseph H.
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