Electricity: conductors and insulators – Conduits – cables or conductors – Combined
Patent
1993-08-24
1998-03-03
Nimmo, Morris H.
Electricity: conductors and insulators
Conduits, cables or conductors
Combined
439133, 439304, 439307, H02G 1502
Patent
active
057238189
ABSTRACT:
An improved structure of a safety plug for coaxial cable comprising a main body and a hand tool, said main body is a hollow circular tube having an internal flange at its rearward wall, in an appropriate location at the forward end of the circular tube is an annular groove and an annular sloping portion in between the annular groove and the sloping portion, which are both inside the circular tube, are spring washer, a coaxial cable and a clamping element. When the main body of the safety plug is rotated, the cable will not be able to rotate with the main body, a special hand tool has to be used to drive the safety plug with the coaxial cable into and out of the input jack.
REFERENCES:
patent: 2552313 (1951-05-01), Friedberg et al.
patent: 3861770 (1975-01-01), Horak
patent: 3890028 (1975-06-01), Blanchenot
patent: 3953097 (1976-04-01), Graham
patent: 5011422 (1991-04-01), Yeh
patent: 5106312 (1992-04-01), Yeh
patent: 5273444 (1993-12-01), Down et al.
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