Patent ID: 9718010
Date: 2017-08-01
CPC Classifications: B01D

Claim:
1. An oil filter module comprising: a casing having an open end; a filter installed in the casing and including: a cap threadedly coupled to the casing to cover the open end of the casing, the cap including a drain nipple protruding downward from a portion of the cap corresponding to the bottom support plate, with a drain hole formed in the drain nipple; and a drain pin coupled to the drain nipple so as to be removable so that the drain hole formed in the drain nipple is opened or closed by the drain pin, wherein an annular rotation groove having a rotating axis of the casing as a central axis thereof is formed in a lower surface of the bottom support plate, the drain hole is formed at a position corresponding to the rotation groove, and the drain pin is seated at one end thereof onto a bottom of the rotation groove when the drain pin is coupled to the drain nipple.