Chip type variable electronic part and chip type variable...

Details Chip type variable electronic part and chip type variable... Chip type variable electronic part and chip type variable...

2005-04-13

2009-12-15

Enad, Elvin G (Department: 2832)

Electrical resistors

Mechanically variable

Movable contact electrically adjustable over length of...

C338S162000

Reexamination Certificate

active

07633372

ABSTRACT:
A chip type variable electronic part includes an insulating substrate with a through hole, an adjustment rotor formed of a metal plate in a bowl shape to receive a screwdriver and disposed on the upper surface of the insulating substrate, an internal terminal electrode plate made of a metal plate disposed in close contact with a lower surface of the insulating substrate, and a shaft portion integrally formed with the internal terminal electrode plate to be fitted in the through hole. A bottom plate of the adjustment rotor is rotatably fitted to the upper end portion of the shaft portion, and the upper end portion of the shaft portion is crimped to outwardly extend over the upper surface of the bottom plate. A portion of the bottom plate of the adjustment rotor, fitted over the shaft portion, is located at a lower level than the uppermost edge of an inner portion of the through hole on the upper surface of the insulating substrate. Thus, the overall height of the chip type variable electronic-part is reduced with an increased insertion depth of a screwdriver into the rotor.

REFERENCES:
patent: 4785277 (1988-11-01), Yashiro
patent: 6628193 (2003-09-01), Doi et al.
patent: 63-124705 (1988-08-01), None
patent: 2-101709 (1990-04-01), None
patent: 7-147206 (1995-06-01), None
patent: 11-354307 (1999-12-01), None
patent: 2001-76910 (2001-03-01), None
patent: 2002-50505 (2002-05-01), None
Japanese Office Action from the corresponding JP 2004-150869, mailed May 16, 2007.

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