Composite tank

Patent metadata

Field	Value
Publication number	US-12111012-B2
Application number	US-202217591958-A
Country	US
Kind code	B2
Filing date	Feb 3, 2022
Priority date	Nov 27, 2019
Publication date	Oct 8, 2024
Grant date	Oct 8, 2024

Abstract

Provided is a tank including 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, and a connection attached to each of the upper and lower domes in the through passages of the necks, wherein the upper dome, lower dome, and shell form a cavity.

First claim

What is claimed is:

1. A tank comprising:
a polymeric upper dome having a neck with an inner surface defining a through passage;
a polymeric lower dome having a neck with an inner surface defining 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 polymeric connection connected to each of the upper and lower domes in the through passages of the necks, the connections being the same as one another and each connection having a body and a flange portion extending from the body, the body having an outer surface that abuts the inner surface of the respective neck and an inner surface defining a through passage with threads for connection of attachments, and the flange portion being received in a corresponding area in the respective upper and lower dome, each corresponding area being an annular pocket having an upper and lower surface; and
a fiberwinding layer around an outer surface of the polymeric upper dome, polymeric lower dome, and polymeric shell,
wherein the upper dome, lower dome, and shell form a cavity, and
wherein the through passage of the upper dome is in communication with the cavity and the through passage of the lower dome is in communication with the cavity.

2. The tank according to claim 1 , wherein each connection is attached to the respective upper and lower dome by insert molding such that at least a bottom and top of each flange portion is surrounded by the corresponding area in the respective upper and lower dome.

3. The tank according to claim 1 , further comprising an air connector having threads on an outer surface thereof that are connected to the threads on the inner surface of the connection attached to the upper dome, and an air stem for pressurizing the tank.

4. The tank according to claim 1 , further comprising a connector having an inlet portion with threads on an outer surface thereof that are connected to the threads on the inner surface of the connection attached to the lower dome, and a conduit portion extending from the inlet portion, the inlet portion and conduit portion each having a through passage fluidly connected with one another to direct flow from the cavity to the conduit portion.

5. The tank according to claim 4 , wherein the connector further comprises at least one flange extending from the inlet portion, the at least one flange configured to connect to a support stand to hold the tank relative to the support stand.

6. The tank according to claim 4 , wherein the conduit portion includes a support rib on an underside thereof for contacting a support stand when weight is applied to the connector to impede downward movement of the conduit portion.

7. The tank according to claim 1 , wherein each neck includes a radially inwardly extending annular rib extending from the inner surface serving as a seat for a seal.

8. The tank according to claim 7 , wherein an end of each connection abuts the respective radially inwardly extending annular rib.

9. The tank according to claim 1 , further including a flexible diaphragm disposed in the cavity and connected to an inner wall of the polymeric shell.

10. An assembly for a tank comprising:
a polymeric upper dome having, a first end, a second end, a neck at the second end having an inner surface defining a through passage, and a lead-in proximate the first end of the upper dome and having an annular base;
a polymeric lower dome having a first end, a second end, a neck at the second end having an inner surface defining a through passage, and a lead-in proximate the first end of the lower dome and having an annular base;
a polymeric shell having a first end and a second end and being configured to be connected to the polymeric upper and lower domes to form a cavity, wherein an end face of the first end of the shell is configured to abut the annular base of the lead-in of the polymeric upper dome and an end face of the second end of the shell is configured to abut the annular base of the lead-in of the polymeric lower dome; and
a flexible diaphragm configured to be connected to an inner wall of the polymeric shell in the cavity,
wherein each neck includes a radially outwardly extending annular rib along its outer surface, each radially outwardly extending annular rib including a plurality of circumferentially spaced flats.

11. The assembly according to claim 10 , further comprising 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 and each including a through passage with threads along an inner surface thereof for connection of attachments and a flange portion received in a corresponding area in the respective upper and lower dome.

12. The assembly according to claim 11 , wherein each connection includes one or more annular ribs on an outer surface thereof that abut the inner surface of the respective neck.

13. The assembly according to claim 10 , further comprising an inner hoop ring configured to be connected to an inner surface of the flexible diaphragm.

Assignees

• Amtrol Licensing Inc

Inventors

• Kampf Christopher
• Neto Jeffrey
• Cerpovicz Ken
• Mckinley Jody

Classifications

• F17C2201/0114

  with interiorly curved end-piece · CPC title

• F17C2203/012

  on or in the wall, e.g. ribs · CPC title

• F17C2205/0107

  Frames · CPC title

• F17C2203/0673

  Polymers · CPC title

• Y02A20/00

  Water conservation; Efficient water supply; Efficient water use · CPC title