US 12,305,809 B2
Composite tank
Christopher Kampf, Moosup, CT (US); Jeffrey Neto, Cumberland, RI (US); Ken Cerpovicz, Warwick, RI (US); Jody McKinley, Mt. Vernon, OH (US); Alex Spires, Westerville, OH (US); and Nicholas Bolcon, Coventry, RI (US)
Assigned to ARMTROL LICENSING INC., West Warwick, RI (US)
Filed by AMTROL LICENSING INC., West Warwick, RI (US)
Filed on Dec. 29, 2022, as Appl. No. 18/147,841.
Claims priority of provisional application 63/312,492, filed on Feb. 22, 2022.
Claims priority of provisional application 63/295,159, filed on Dec. 30, 2021.
Prior Publication US 2024/0003492 A1, Jan. 4, 2024
Int. Cl. F17C 1/16 (2006.01)
CPC F17C 1/16 (2013.01) [F17C 2201/0109 (2013.01); F17C 2203/0617 (2013.01); F17C 2203/066 (2013.01); F17C 2205/0305 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A tank comprising:
a polymeric upper dome having a neck with a through passage;
a polymeric lower dome having a neck with a through passage;
a polymeric shell having a first end connected to the upper dome and a second end connected to the lower dome;
a connection attached to each of the upper and lower domes in the through passages of the necks, the connections being the same as one another, each connection having a through passage with threads along an inner surface thereof for connection of attachments;
a connector attached to each of the connections, each connector being sealed to an end of the neck of the respective upper or lower dome by a first seal and being sealed to another area of the neck by a second seal; and
wherein the upper dome further comprises a lead-in that engages the first end of the polymeric shell and the lower dome further comprises a lead-in that engages the second end of polymeric shell, each of the lead-ins comprising a first portion, a second portion proximate the first portion, and a third portion proximate the second portion, the first portion oriented parallel to an outer surface of the polymeric shell, the second portion oriented radially inward from the polymeric shell at a first angle compared to the first portion to create a gap between the second portion and the polymeric shell, and the third portion oriented radially inward from the polymeric shell at a second angle compared to the first portion to create a gap between the third portion and the polymeric shell, wherein the second angle is greater than the first angle such that the gap between the third portion and the polymeric shell is greater than the gap between the second portion and the polymeric shell.