Electricity: circuit makers and breakers – Multiple circuit control – Pivoted contact
Reexamination Certificate
2007-07-03
2007-07-03
Friedhofer, Michael A (Department: 2832)
Electricity: circuit makers and breakers
Multiple circuit control
Pivoted contact
C200S314000
Reexamination Certificate
active
11389365
ABSTRACT:
A switch device is provided that includes a first switch portion in which an upper electrode and lower electrodes face each other at a predetermined gap and a second switch portion having metal domes which are disposed at a lower side facing the first switch portion and expand to a predetermined height. A first spacer having a predetermined thickness A is disposed in the first switch portion to form a gap between the upper electrode and the lower electrodes, a second spacer having a thickness B equal to or greater than the expanded height of the metal domes is disposed in the second switch portion, and the thickness of the second spacer is greater than that of the first spacer.
REFERENCES:
patent: 5561278 (1996-10-01), Rutten
patent: 5669486 (1997-09-01), Shima
patent: 6446654 (2002-09-01), Brazier et al.
patent: 6858811 (2005-02-01), Fitzgerald et al.
patent: 6995324 (2006-02-01), Asada
patent: 48-99462 (1947-02-01), None
Hagiwara Yasuji
Kondo Takashi
Nakano Kazunori
Nakayama Daihei
Takata Masahiro
Alps Electric Co. ,Ltd.
Friedhofer Michael A
Klaus Lisa
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