# US 11,441,735 B2 · High pressure vessel

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- Number: US 11,441,735 B2
- Document ID: US11441735B2
- Status: Granted
- Kind: B2
- Application number: 17/233,502
- Filed: 2021-04-18
- Published: 2021-12-09
- Granted: 2022-09-13
- Earliest claimed: 2020-06-05
- Assignees: MAGNA Energy Storage Systems GesmbH
- Applicants: MAGNA Energy Storage Systems GesmbH
- Inventors: David Puntigam; Andreas Preitler; Rainer Puchleitner
- Web page: https://patentgrep.com/patent/US11441735B2

## CPC

- F17C 1/06: built-up from wound-on bands or filamentary material, e.g. wires
- F17C 1/16: constructed of plastics materials {(shaping of plastics B29C)}
- F17C 13/06: Closures, e.g. cap, breakable member ({for autoclaves B01J3/03}; closures for {large} containers in general B65D {B65D90/54}; {for pressure vessels in general F16J13/00})
- F17C 2201/0109: with exteriorly curved end-piece
- F17C 2201/0119: with flat end-piece
- F17C 2201/056: Small (<1 m3)
- F17C 2203/0604: Liners
- F17C 2203/0621: with three layers
- F17C 2203/0624: with four or more layers
- F17C 2203/066: Plastics
- F17C 2203/0663: in form of fibers or filaments
- F17C 2203/067: helically wound
- F17C 2205/0305: Bosses, e.g. boss collars
- F17C 2205/0323: Valves
- F17C 2205/0397: on both sides of the pressure vessel
- F17C 2209/2109: Moulding
- F17C 2209/2127: by blowing
- F17C 2209/2154: Winding
- F17C 2209/219: Working processes for non metal materials, e.g. extruding
- F17C 2209/234: of closing end pieces, e.g. caps
- F17C 2221/012: Hydrogen
- F17C 2223/0123: gaseous, e.g. CNG, GNC
- F17C 2223/036: Very high pressure (>80 bar)
- F17C 2260/036: Avoiding leaks
- F17C 2270/0168: by vehicles
- Y02E 60/32: Hydrogen storage
- F17C: VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES (storing fluids in natural or artificial cavities or chambers in the earth B65G5/00; construction or assembling of bulk storage containers employing civil-engineering techniques E04H7/00; variable-capacity gas-holders F17B; liquefaction or refrigeration machines, plants, or systems F25)
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A high-pressure container includes a cylinder composed of plastic, at least one half-shell composed of plastic, a substantially rotationally symmetrical insert as a boss member, and a sleeve. The cylinder is to serve as a centre member, while the at least one half-shell is at an axial end of the cylinder. The insert as a boss member, the insert having a foot member at an end thereof facing the container interior. The foot member is embedded in the plastic of the half-shell to substantially form a hollow cone or hollow cylinder. The sleeve is pressed into the inner circumference of the foot member at least in a pressing portion of the sleeve. The plastic of the half-shell is arranged between the sleeve and an inner circumference of the foot member so that in a pressing portion, a thin plastic layer of the plastic of the half-shell is pressed between the sleeve and the inner circumference of the foot member.

## Claims

### Claim 1

A high-pressure container, comprising:
a cylinder, composed of plastic, to serve as a centre member, the cylinder including:
at least one half-shell, composed of a multilayer composite plastic that includes a plastic layer and a barrier layer, at an axial end of the cylinder;
a boss member having a foot member at an end thereof facing an interior of the high-pressure container, the foot member being embedded in the plastic of the half-shell to substantially form a hollow cone or hollow cylinder, the foot member having a first groove filled with the multilayer composite plastic of the half-shell, and which extends around an inner circumference of the foot member at a level of the sleeve, a second groove which is filled with the multilayer composite plastic of the half-shell, and which extends around at least in portions on the base of the foot member facing the interior of the high-pressure container;
a sleeve pressed into the inner circumference of the foot member;
a valve received in the boss member, the valve having a shaft portion received in the sleeve;
a first sealing element, arranged on a base of the first groove between the plastic layer and the foot member, to form a first seal; and
a second sealing element, arranged on a base of the second groove between the plastic layer and the foot member, to form a second seal.

### Claim 2

A high-pressure container, comprising:
a cylinder, composed of plastic, to serve as a centre member, the cylinder including:
at least one half-shell, composed of a multilayer composite plastic that includes a plastic layer and a barrier layer, at an axial end of the cylinder;
a boss member having a foot member at an end thereof facing an interior of the high-pressure container, the foot member being embedded in the plastic of the half-shell to substantially form a hollow cone or hollow cylinder, the foot member having a first groove filled with the multilayer composite plastic of the half-shell, and which extends around an inner circumference of the foot member at a level of the sleeve, a second groove which is filled with the multilayer composite plastic of the half-shell, and which extends around at least in portions on the base of the foot member facing the interior of the high-pressure container, a third groove which is filled with the multilayer composite plastic of the half-shell and which extends around at least in portions on a cover face of the foot member that faces the interior of the high-pressure container, and a fourth groove which is filled with the multilayer composite plastic of the half-shell, and which extends around at least in portions on the base of the foot member facing the interior of the high-pressure container;
a sleeve pressed into the inner circumference of the foot member;
a valve received in the boss member, the valve having a shaft portion received in the sleeve;
a first sealing element, arranged on a base of the first groove between the plastic layer and the foot member, to form a first seal; and
a second sealing element, arranged on a base of the second groove between the plastic layer and the foot member, to form a second seal.

### Claim 3 (depends on 2)

The high-pressure container of claim 2, wherein the first groove, the second groove, the third groove, and the fourth groove have a trapezoid form which widens towards the base of the groove.