Patent ID: 11857901
Assignee: CUMMINS FILTRATION IP, INC.
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 20:
21. A filter sub-assembly comprising:
a filter element for filtering a fluid; and
an expansion membrane assembly surrounding the filter element,
the expansion membrane assembly comprising a membrane body and a lip, the membrane body positioned around an outer surface of the filter element and the lip extending away from the membrane body,
the membrane body comprising a membrane side wall and a membrane bottom wall that together define an inner area of the membrane body for receiving the filter element, the membrane body comprising an extension extending radially outwardly from a top portion of the membrane side wall, the lip extending axially from a bottom surface of the extension toward the membrane bottom wall and positioned radially outward relative to the extension,
wherein the extension of the membrane body comprises at least one projection or at least one notch that extends in an axial direction to allow for rotational locking.