Geometrical instruments
Patent
1979-07-20
1981-06-30
Desmond, Eugene F.
Geometrical instruments
200 5109, 339 14P, H01R 1718, H01R 3354
Patent
active
042759471
ABSTRACT:
A connector plug includes a tip contact having a center lead rod, a cylindrical side contact coaxially located around the center lead rod, and insulation members for electrically isolating the tip and side contacts from each other. Also disclosed is a spring loaded arrangement for short circuiting the center lead rod to the side contact when the plug is out of a jack, and which automatically releases the short circuit when the plug is completely inserted into a jack.
REFERENCES:
patent: 2640118 (1953-05-01), Werner
patent: 2664475 (1953-12-01), Harlin
patent: 3467940 (1969-09-01), Wallo
patent: 3600531 (1971-08-01), Hoegeal
Desmond Eugene F.
Japan Music Supply Inc.
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