Protective device for a pressurized tank

Patent metadata

Field	Value
Publication number	US-2024175545-A1
Application number	US-202217994485-A
Country	US
Kind code	A1
Filing date	Nov 28, 2022
Priority date	Nov 30, 2021
Publication date	May 30, 2024
Grant date	—

Abstract

A protective device for a pressurized gas tank comprises a shell designed to absorb energy in the event of an impact and a mechanical joining interface to mechanically join the shell to the pressurized gas tank.

First claim

1 . A protective device for a pressurized gas tank, comprising:
a shell designed to absorb energy in response to an impact; and a mechanical joining interface to mechanically join the shell to the pressurized gas tank.

2 . The protective device according to claim 1 , wherein the shell is integral with the mechanical joining interface, and wherein the shell is made of a same part as, bonded to, or over-molded with the mechanical joining interface.

3 . The protective device according to claim 1 , wherein the pressurized gas tank comprises a base that is rotationally symmetrical, and the mechanical joining interface is designed to be assembled with the base.

4 . The protective device according to claim 3 , wherein the base comprises a shoulder that is rotationally symmetrical, and wherein the mechanical joining interface comprises a rigid surface complementary to the shoulder and at least one fixing feature to fix the rigid surface to the shoulder, as the at least one fixing feature comprising a rivet and/or a screw and/or a clamp and/or welding.

5 . The protective device according to claim 3 , wherein the base comprises an external crown and wherein the mechanical joining interface comprises an elastic ring, capable of protruding beyond the external crown.

6 . The protective device according to claim 5 , wherein the elastic ring comprises at least two internal tabs, distal ends of which are able to protrude beyond the external crown.

7 . The protective device according to claim 1 , wherein the shell is made of a plastic material.

8 . The protective device according to claim 1 , wherein the shell is made of an expanded plastic.

9 . The protective device according to claim 1 , wherein the shell is made of expanded polystyrene.

10 . The protective device according to claim 1 , wherein the shell has a shape complementary to a shape of the pressurized gas tank, in an area to be protected.

11 . The protective device according to claim 1 , wherein the shell is designed to be assembled on a hemispherical cup of the pressurized gas tank.

12 . The protective device according to claim 1 , further comprising, on a distal edge of the shell, at least one clip for fixing to the pressurized gas tank.

13 . A pressurized gas tank, comprising at least one protective device according to claim 1 .

14 . The pressurized gas tank according to claim 11 , having a cylindrical central trunk, terminated at each of two ends of the cylindrical central trunk by a hemispherical cap.

15 . The pressurized gas tank according to claim 14 , wherein each hemispherical cap is protected by a protective device comprising a shell designed to absorb energy in response to an impact, and a mechanical joining interface to mechanically join the shell to the pressurized gas tank.

Assignees

• Faurecia Systemes Dechappement

Inventors

• Farines Ludovic
• Nouvel Ludovic
• Maeso Jean-Baptiste
• Jolicor Joël

Classifications

• F17C2205/0308

  Protective caps · CPC title

• F17C2203/066

  Plastics · CPC title

• F17C2203/012

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

• F17C2201/0109

  with exteriorly curved end-piece · CPC title

• F17C1/16 Primary

  constructed of plastics materials {(shaping of plastics B29C)} · CPC title