Liquid purification or separation – With drip – overflow or content draining feature
Reexamination Certificate
2011-01-18
2011-01-18
Menon, Krishnan S (Department: 1772)
Liquid purification or separation
With drip, overflow or content draining feature
C210S429000, C210S431000, C210S418000, C210S436000, C210S440000, C210S450000
Reexamination Certificate
active
07871517
ABSTRACT:
The filter device (10) is provided with a drain device (50) provided with a main body (51) and a plug (60). The main body (51) has a first opening (51a) which communicates to the outer side of a housing (20), a second opening (51b) which communicates with an inner side (42a) of a filter element (40), and a third opening (56) which communicates with a first channel (51c) communicating to the first opening (51a) and the second opening (51b) and a space (B) between the filter element (40) and the housing (20). The plug (60) is held within the first channel (51c), and is movable between a first position (P1) at which fluid is not discharged from the housing (20), and a second position (P2) at which fluid is discharged from the housing (20). The plug (60) is provided with a second channel (65) that communicates with the first channel (51c) and communicates with the outer side of the housing (20) when in the second position (P2).
REFERENCES:
patent: 2693281 (1954-11-01), Winzen
patent: 5102543 (1992-04-01), Burroughs
patent: 5879544 (1999-03-01), Cassidy
patent: 2002/0104980 (2002-08-01), Jainek
patent: 2004/0144734 (2004-07-01), Suzumori et al.
patent: 2006/0086922 (2006-04-01), Jensen et al.
European Search Report for European Application No. 06811782.9, dated Dec. 18, 2009, 4 pages.
Komine Akiyoshi
Okamoto Mitsunobu
Brinks Hofer Gilson & Lione
Kurtz Benjamin
Menon Krishnan S
Yamashin-Filter Corp.
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