Liquid purification or separation – With repair or assembling means – Removable treatment part with normally disabled flow controller
Reexamination Certificate
2006-11-28
2006-11-28
Lithgow, Thomas M. (Department: 1724)
Liquid purification or separation
With repair or assembling means
Removable treatment part with normally disabled flow controller
C210S248000, C210S440000, C251S149100, C251S149600, C251S149900, C184S001500
Reexamination Certificate
active
07141166
ABSTRACT:
An oil filter has a drain hole, which is internally blocked with a valve member. When oil remaining in the oil filter is drained, a drainpipe is inserted into the drain hole, so that the valve member is displaced and remaining oil is drained from the drain hole. This valve member has an annular recession to steadily support an upper end of the inserted drainpipe. Therefore, gripping force of the drainpipe is enhanced without decreasing draining performance. The drainpipe and the oil filter are connected with each other via a seal member that is provided to the oil filter. The drainpipe80has a removing means that holds at least a part of the seal member to pick the seal member off the oil filter, when the inserted drainpipe is detached from the drain hole. Thus, the seal member can be removed simultaneously with the drainpipe from the oil filter.
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Sugiura Yoshihiko
Takahara Toshihiro
Tsuge Noriyuki
Lithgow Thomas M.
Nixon & Vanderhye PC
Toyoda Boshoku Corporation
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