Fluid filter, drain mechanism thereof, draining jig used in fluid filter and draining method of fluid filter
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United States of America Patent
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Nov 20, 2007
Grant Date -
Jul 29, 2004
app pub date -
Nov 12, 2003
filing date -
Nov 12, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
The invention provides a drain mechanism of a fluid filter in which a heated fluid is not splashed on a worker at a time of discharging the fluid such as a time of exchanging an element, and can inhibit dusts or the like from being mixed from an external portion at a time of normal use. A drain mechanism 7 of the present invention is provided with a cap 3 engaged with a case 2 and having a drain hole 15, a drain member (a drain plug 20) detachably mounted to the cap from an outer side thereof and closing the drain hole, a valve member 25 provided in an inner side of the cap and closing the drain hole, and an elastic means (a spring 11) for energizing the valve member in a direction of closing the drain hole. In a state in which the drain member is detached from the cap, a residual fluid within a housing is discharged by a tubular draining jig 30 inserted to the drain hole.
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