Vessel screen retaining system and method
AssigneePhilip Morris USA Inc.
InventorsNathaniel HULL, Adam LISBETH, William SAMMLER, John TILLEY
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Abstract
Certain embodiments include a screen assembly of a vessel, where the screen assembly includes a plurality of fixed elements and a retainer, and the retainer includes a ring, a plurality of wedges disposed about the ring, and a plurality of keyholes at spaced locations about the ring. Each keyhole includes a bore and a slot extending from the bore into an adjacent wedge of the plurality of wedges, the slots have a width less than the bores, and the retainer may receive the 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 wedges.
Claims17
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 receives the fixed element through the bore and rotates so as to bring the fixed element into engagement with the wedge, and the fixed element receives the pin through the first aperture such that the pin is in confronting relation with the rim and further rotation of the retainer is reduced.
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, the rim having a second aperture thereon,
- 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, the retainer configured to receive the fixed element through the bore and rotated so as to bring the fixed element into engagement with the wedge and the first aperture in alignment with the second aperture such that the pin may be received by the first and second apertures.
Dependencies are inferred from the claim text.