US 12,290,094 B2
Vessel screen retaining system and method
Nathaniel Hull, Richmond, VA (US); Adam Lisbeth, Richmond, VA (US); William Sammler, Richmond, VA (US); and John Tilley, Richmond, VA (US)
Assigned to PHILIP MORRIS USA INC., Richmond, VA (US)
Filed by Philip Morris USA Inc., Richmond, VA (US)
Filed on Mar. 4, 2024, as Appl. No. 18/594,378.
Application 17/547,514 is a division of application No. 15/695,956, filed on Sep. 5, 2017, granted, now 11,284,642, issued on Mar. 29, 2022.
Application 18/594,378 is a continuation of application No. 17/547,514, filed on Dec. 10, 2021, granted, now 11,918,030, issued on Mar. 5, 2024.
Prior Publication US 2024/0196951 A1, Jun. 20, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. B01D 24/12 (2006.01); A24B 3/18 (2006.01); A24B 13/00 (2006.01); B01D 24/44 (2006.01); B01D 24/48 (2006.01); B01D 29/03 (2006.01); B01D 29/94 (2006.01); B01D 29/96 (2006.01)
CPC A24B 3/182 (2013.01) [A24B 3/185 (2013.01); B01D 24/12 (2013.01); B01D 24/44 (2013.01); B01D 24/4876 (2013.01); B01D 29/03 (2013.01); B01D 29/94 (2013.01); B01D 29/96 (2013.01); A24B 13/00 (2013.01); B01D 2201/0423 (2013.01); B01D 2201/40 (2013.01); B01D 2201/4015 (2013.01); B01D 2201/4023 (2013.01); B01D 2201/4053 (2013.01); B01D 2201/4084 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A screen assembly of an impregnator vessel, the screen assembly comprising:
a fixed element having a head and a first aperture therethrough;
a pin configured to be received by the first aperture; and
a retainer including:
an inner ring,
a rim extending axially from the inner ring,
a wedge on the inner ring, and
a keyhole located on the inner ring, the keyhole including:
a bore, and
a slot extending from the bore into the wedge, whereby the retainer is configured to receive the fixed element through the bore and the retainer is configured to rotate so as to bring the fixed element into engagement with the wedge, and the fixed element is configured to receive the pin through the first aperture such that the pin contacts the rim such that further rotation of the retainer is reduced.