Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2006-07-04
2006-07-04
Trieu, Van T. (Department: 2636)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S634000, C340S626000
Reexamination Certificate
active
07071832
ABSTRACT:
An electronic digital pressure switch for detecting gas pressures features improved safety. The digital pressure switch that detects gas pressures and generates outputs has a housing provided with pinholes that allow a gas to pass therethrough. With this arrangement, even if a gas should leak into the housing, the leakage gas is let out through the pinholes. Thus, when the pressure of a flammable gas is detected, it is possible to eliminate the danger of an explosion caused by the flammable gas accumulating in the housing.
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patent: 2000-75810 (2000-03-01), None
Miyamoto Yoshio
Yamaguchi Tsutomu
Sanyo Electric Co,. Ltd.
Trieu Van T.
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