Patent ID: 11918030
Assignee: PHILIP MORRIS USA INC.
Field: Chemical engineering (Chemistry)
Classification: CPC A  B | IPC A  B

Claim 0:
1. A screen assembly of an impregnator vessel, the screen assembly comprising:
a plurality of fixed elements; and
a retainer including,
an outer ring,
an inner ring,
a plurality of wedges disposed about the outer ring and the inner ring, and
a plurality of keyholes at spaced locations about the outer ring and the inner ring,
each keyhole comprising a bore and a slot extending from the bore into an adjacent wedge of the plurality of wedges, the slots having a width less than a width of the bores, whereby the retainer may receive the plurality of fixed elements through the bores and may be rotated in a relation with the plurality of fixed elements to bring the plurality of fixed elements into simultaneous engagement with the plurality of wedges.