Cover for gas cylinder tap

1. A cover for a tap of a gas cylinder, comprising:

a shell for housing the tap; and

a hook pivotally mounted on the shell, configured for securing the gas cylinder to a horizontal bar;

wherein the shell comprises:

reservations on the external surface, the reservations forming elongate cavities, the reservations configured for receiving the hook in a folded position only, so that said hook generally conforms to said external surface adjacent to said reservations.

2. The cover according to claim 1 , wherein the hook comprises:

two arms pivotally mounted at one end on the shell and linked together by a connecting bar, said arms extending in an arcuate manner from the pivot ends thereof until a vertical half portion of the shell that is opposite to the pivot when said hook is in the folded position.

3. The cover according to claim 2 , wherein the connection bar comprises:

hand gripping means for facilitating unfolding of the hook, said gripping means comprising:

a cut-out in said bar.

4. The cover according to claim 1 , wherein the shell comprises:

an upper half-shell and a lower half-shell, said half-shells being joined together along a contact plane that forms an angle with a vertical direction comprised of one of the following ranges:

between 30° and 60°; and

between 40° and 50°.

5. The cover according to claim 4 , wherein the hook is pivotally mounted on the lower half-shell, said lower half-shell comprising:

the reservations receiving said hook in the folded position.

6. The cover according to claim 4 , wherein the upper half-shell comprises:

a handle that extends essentially horizontally over a wall of said shell that is configured for housing the tap.

7. The cover according to claim 4 , wherein the upper half-shell comprises:

an upper opening for accessing a flow selector of the tap; and

a lower opening for a accessing a gas outlet of said tap.

8. The cover according to claim 4 , wherein both the upper and lower half-shells form, in a complementary manner, a side opening at the contact plane, said opening being intended for accessing a connecting port of the tap.

9. The cover according to claim 4 , wherein the upper half-shell is generally spherically shaped.

10. The cover according to claim 4 , wherein the contact plane between the upper and lower half-shells has an upper portion at a rear side of the cover, the hook being pivotally mounted on said rear side of said shell.

11. The cover according to claim 4 , wherein the lower half-shell is configured to extend from an upper rear side to a lower front side of the shell, and comprises:

an opening for receiving a neck of the gas cylinder.

12. The cover according to claim 4 , wherein the lower half-shell comprises:

a rear side where the hook is pivotally mounted, said rear side comprising:

a generally flat portion for contacting the horizontal bar.

13. The cover according to claim 1 , wherein the hook is made of a material comprising:

plastic;

aluminium; or

composite material.

14. The cover according to claim 1 , wherein the hook comprises:

arcuate arms having a plain section of more than one of the following:

40 mm 2 ;

50 mm 2 ; and

60 mm 2 .

15. The cover according to claim 1 , wherein the hook comprises:

arcuate arms with a generally triangular shaped cross-section.

16. The cover according to claim 1 , wherein the hook comprises:

arms that extend, essentially over the whole length thereof, in an arcuate manner with an essentially constant radius over a sector that is comprised between one of the following:

120° and 200°; and

150° and 180°.

17. A gas storage assembly, comprising:

a gas cylinder with a neck portion;

a tap fixed to said neck portion;

a cover over said tap, the cover comprising:

a shell for housing the tap; and

a hook pivotally mounted on the shell, configured for securing the gas cylinder to a horizontal bar;

wherein the shell comprises:

reservations on the external surface thereof configured for receiving the hook in a folded position, so as to generally conform to said external surface.

18. The gas storage assembly according to claim 17 , wherein the tap comprises:

a flow selector on an upper portion;

a gas outlet on a lower portion;

at least one of a connecting port;

a refill port; and

a shut-off valve on a side portion;

wherein the cover comprises:

an upper opening;

a lower opening; and

a side opening providing access to said flow selector, gas outlet and connecting port, refill port and/or shut-off valve, respectively.