Fluid handling – Line condition change responsive valves – Direct response valves
Reexamination Certificate
2005-06-14
2005-06-14
Krishnamurthy, Ramesh (Department: 3753)
Fluid handling
Line condition change responsive valves
Direct response valves
C174S0170VA, C251S337000
Reexamination Certificate
active
06904933
ABSTRACT:
An enclosure for outdoor equipment, which can prevent the enclosure from being damaged by a rise of air pressure inside the enclosure by exhausting air from the enclosure, and further can secure safety of the enclosure and can secure easiness for fixing an inside air pressure adjusting mechanism to the enclosure and also can prevent a dew condensation from occurring in the enclosure, is provided. The enclosure for outdoor equipment provides an inside air pressure adjusting mechanism. The inside air pressure adjusting mechanism provides a valve seat and a valve element which is seated on the valve seat in a state that the valve element can be opened and closed by placing a sealing component between them. The inside air pressure adjusting mechanism is inserted to a hole of the enclosure for outdoor equipment, in which an electronic circuit is disposed, and fixed so that the inside air pressure adjusting mechanism does not stick out largely from the front surface of the enclosure for outdoor equipment. With this, the atmosphere can be prevented from entering the enclosure and the air inside the enclosure is exhausted to the outside corresponding to a rise of the temperature inside the enclosure.
REFERENCES:
patent: 4559969 (1985-12-01), Ulming
patent: 6497248 (2002-12-01), Herz
patent: 3146030 (1983-05-01), None
patent: 62-200869 (1987-12-01), None
patent: 9-66889 (1997-03-01), None
patent: 9-193890 (1997-07-01), None
Krishnamurthy Ramesh
NEC Corporation
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