Electricity: circuit makers and breakers – Electric switch details – Cases and bases
Patent
1997-07-30
1999-09-28
Luebke, Renee S.
Electricity: circuit makers and breakers
Electric switch details
Cases and bases
2003021, 200 6181, 411424, 439559, H01H 904
Patent
active
059572698
ABSTRACT:
A mounting bolt 30 has a disclike flange portion 30b formed on an end of a tightening portion 30a. A switch bracket 28 is fixed to a screw hole 12 by tightening the bolt 30 with the bolt 30 inserted into a mounting hole 29 formed so as to have the same diameter as the screw hole 12. A rubber cover 21 covers the switch bracket 28, and has an annular seal portion 21a formed thereon. The seal portion 21a is larger in diameter than the mounting hole 29 and smaller in diameter than the flange portion 30b. A stepped portion 30c is formed on the bolt 30 in such a manner that a surface of contact thereof with the bracket 28 extends in parallel to the bracket 28, that the diameter thereof is larger than the mounting hole 29 and smaller than the seal portion 21a, and that the length thereof in an axial direction is such that the flange portion 30b biases the seal portion 21a at the time of tightening the bolt 30.
REFERENCES:
patent: 1503238 (1924-07-01), Gall
patent: 3243835 (1966-04-01), Armantrout et al.
patent: 4231631 (1980-11-01), Guerinault et al.
patent: 4877364 (1989-10-01), Sorrenntino
patent: 5063277 (1991-11-01), Takano et al.
Kasai Masahiro
Kawada Yasuyoshi
Sahashi Kazuharu
Tashiro Tatsumi
Umeda Yukihiko
Kabushiki Kaisha Tokai Denki Seisakusho
Luebke Renee S.
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