Patent ID: 9656194
Date: 2017-05-23
CPC Classifications: B01D

Claim:
1. A filter for filtering a fluid, the filter comprising: a filter cup; a filter element arranged in an interior of said filter cup; a filter head comprising at least one of an inlet for a fluid to be filtered and an outlet for the filtered fluid; said filter cup and said filter head connected to each other by a releasable bayonet rotation/insertion connection rotating about a rotation insertion axis ( wherein an axial direction an defined by the rotation insertion axis ( wherein the rotation/insertion connection comprises: wherein the locking nose is configured to lockably engage into the locking region; a spring pretensioning element acting between said filter cup and said filter head and generating a pretension acting on said locking nose in said recess; wherein said recess has a locking shoulder positioned between said locking region and said insertion/removal region and interacting with said locking nose; wherein said locking shoulder has a shoulder tip on a side correlated with locking nose; wherein said locking nose has a locking tip on a side correlated with said locking shoulder; wherein said locking nose, when said locking tip and said shoulder tip contact each other, is forced by the pretension of said pretensioning element into said locking region or into said insertion/removal region; wherein the filter cup includes wherein the filter head includes