Anti-rotation device for compressed gas cylinder

Abstract

An anti-rotation assembly (100) comprising: a carriage (110) having a bracket (140) disposed on a top surface (112) thereof; and an anti-rotation device (200) having an elongate body (210), a first end (220) and a second end (230). The first end 220 is removably secured to the opening 144 of the bracket 140, and the second end 230 is removably secured to the neck 188 of the gas cylinder 180. The locked state is defined by a first end (220) of the anti-rotation device (200) secured to the bracket (140), and the unlocked state is defined by a first end (220) of the anti-rotation device (200) not secured to the bracket (140). The anti-rotation device (200) is rotatable about a longitudinal axis Y defined by a neck (188) of the gas cylinder (180) in the unlocked state.

Description

Technical Field

[0001] The field of the present disclosure generally relates to fixtures for compressed gas cylinders, and more particularly, to anti-rotation devices used when transporting compressed gas cylinders. Background Art

[0002] Compressed gas cylinders are used to store liquefied gases under pressure. The cylinders are typically filled at a service station and transported to the end user. To transport the cylinders safely, the cylinders must be secured to a skid that restricts the cylinders from rolling and sliding. The cylinders are typically secured using straps or by fixing the ends of the cylinders to the skid. However, these methods do not allow the cylinders to be temporarily rotated to adjust the orientation of the cylinders, thereby enabling the user to access the pressure relief valve or nozzle of the cylinders and fill them.

[0003] Therefore, there is a need in the art to provide a device for securing a compressed gas cylinder to a skid and allowing access to the pressure relief valve or nozzle of the compressed gas cylinder. Summary of the Invention

[0004] In one aspect, an anti-rotation assembly for a compressed gas cylinder is disclosed. The anti-rotation assembly includes: a skid having a top surface; a bracket disposed on the top surface of the skid, the bracket having an opening; and an anti-rotation device having an elongated body, a first end, and a second end, the first end being detachably fixed to the opening of the bracket and the second end being detachably fixed to the neck of the cylinder. The locked state of the anti-rotation device is defined by the first end of the anti-rotation device fastened to the bracket, and the unlocked state of the anti-rotation device is defined by the first end of the anti-rotation device not fastened to the bracket. The anti-rotation device is rotatable about a longitudinal axis defined by the neck of the cylinder in the unlocked state. The attached state of the anti-rotation device is defined by the second end attached to the neck of the cylinder, and the unattached state of the anti-rotation device is defined by the second end not attached to the neck of the cylinder.

[0005] In another aspect, a method of securing a gas cylinder to a skid is disclosed. The method includes positioning the gas cylinder having a neck on the top surface of the skid; positioning the second end of the anti-rotation device on the neck of the gas cylinder; attaching the anti-rotation device to the neck of the gas cylinder, thereby defining the attached state of the anti-rotation device; positioning the first end of the anti-rotation device against a longitudinal sidewall of a bracket of the skid, the bracket being disposed on the top surface of the skid; and fastening the first end of the anti-rotation device to the bracket, thereby defining the locked state of the anti-rotation device, such that the gas cylinder is detachably secured to the skid. The unlocked state of the anti-rotation device is defined by the first end of the anti-rotation device not fastened to the bracket, and wherein the unattached state of the anti-rotation device is defined by the second end not attached to the neck of the gas cylinder.

[0006] In yet another aspect, a method of filling a gas cylinder secured to a skid is disclosed. The method includes positioning the gas cylinder on a top surface of the skid, the gas cylinder having a neck and a fill valve, and the fill valve having a fill port; attaching a second end of an anti-rotation device to the neck of the gas cylinder, thereby defining an attached state of the anti-rotation device; positioning a first end of the anti-rotation device against a longitudinal sidewall of a skid bracket, the bracket disposed on the top surface of the skid defining a first angular position, wherein an unlocked state of the anti-rotation device is defined by the first end of the anti-rotation device not being fastened to the bracket; rotating the gas cylinder and the anti-rotation device about a longitudinal axis defined by the neck of the gas cylinder to a second angular position such that the fill valve is accessible; filling the gas cylinder through the fill port of the fill valve; rotating the gas cylinder and the anti-rotation device to the first angular position; and fastening the first end of the anti-rotation device to the bracket, thereby defining a locked state of the anti-rotation device.

[0007] These and other aspects and features of the present disclosure will be more readily understood when read in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 A perspective view of an anti-rotation assembly for a compressed gas cylinder in accordance with an embodiment of the present disclosure is shown;

[0009] Figure 2 Shown is Figure 1 A partial view of Detail A of the anti-rotation assembly of

[0010] Figure 3 Shown is Figure 1 A side view of the anti-rotation assembly of

[0011] Figure 4 Shown is Figure 3 A partial view of Detail B of the anti-rotation assembly of

[0012] Figure 5 Shown is Figure 1 A front plan view of the anti-rotation assembly of

[0013] Figure 6 Shown is Figure 1 A front plan view of the anti-rotation device of the anti-rotation assembly of

[0014] Figure 7 Shown is Figure 6 A side view of the anti-rotation device of

[0015] Figure 8 A method of securing a gas cylinder to a skid is shown; and

[0016] Figure 9 A method of filling a gas cylinder secured to a skid is shown.

[0017] The reference signs used in the drawings and their meanings are listed in summary form in the list of reference signs. In principle, the same parts have the same reference signs in the drawings. Detailed Description of the Invention

[0018] In the following specification and claims, many terms will be referred to, and these terms should be defined to have the following meanings.

[0019] As used herein, the singular forms "a", "an", and "the" include plural referents unless the context clearly dictates otherwise. The terms "comprising", "including", and "having" are intended to be inclusive and mean that there may be additional elements other than the listed elements. The terms "optional" and "optionally" mean that the subsequent described event or circumstance may or may not occur, and the specification includes both the case where the event occurs and the case where the event does not occur.

[0020] Embodiments of the present disclosure relate to an anti-rotation assembly. The anti-rotation assembly includes a skid having a top surface; a bracket disposed on the top surface of the skid, the bracket having a longitudinal opening; and an anti-rotation device having an elongated body, a first end, and a second end, the first end being detachably fixed to the longitudinal opening of the bracket and the second end being detachably fixed to the neck of a gas cylinder. The anti-rotation device is fastened to the bracket, thereby defining a locked state, and the anti-rotation device can rotate about the neck of the gas cylinder in an unlocked state in which the anti-rotation device is not fastened to the bracket.

[0021] Now, various aspects of the present disclosure will be described with reference to the drawings disclosed herein, wherein like reference signs denote like elements unless otherwise specified. Figure 1 A perspective view of the anti-rotation assembly 100 is shown, Figure 2 showing Figure 1 a partial enlarged view of Detail A of Figure 3 A side view of the anti-rotation assembly 100 is shown, Figure 4 showing Figure 3 a partial view of Detail B of Figure 5 A front plan view of the anti-rotation assembly 100 is shown.

[0022] Generally referring to Figure 1 - 5, the anti-rotation assembly 100 includes a skid 110 having a top surface 112 and a bottom surface 114 and is configured to secure a gas cylinder 180. The skid 110 has a generally rectangular shape with longitudinal edges 116 and transverse edges 118, where the gas cylinder 180 is positioned on the top surface 112 and extends parallel to the longitudinal edges 116. In some embodiments, the skid 110 includes an opening 120 through which at least a portion of the gas cylinder 180 is positioned. In some embodiments, the skid 110 further includes a forklift receiver 122 that extends transverse to the longitudinal edges 116. The forklift receiver 122 is a structural tube that also provides structural support for the skid 110. In the illustrated embodiment, each skid 110 is configured to secure one gas cylinder 180, however, in some embodiments, the skids 110 may be positioned adjacent to each other or the skids 110 may be stacked on top of each other, where additional vertical transverse supports connect the plurality of skids 110.

[0023] The gas cylinder 180 includes a cylindrical central portion 182, a front domed portion 184, and a rear domed portion 186. In some embodiments, the rear is flat. As Figure 3 best shown in, the front domed portion 184 and the rear domed portion 186 define a central axis Y of the gas cylinder 180. Returning to Figure 1 - 5 , the front domed portion 184 includes a cylindrical neck 188 that extends from the front domed portion 184. As Figure 4 best shown in, the cylindrical neck 188 is concentric with the central axis Y of the gas cylinder 180, and the cylindrical neck 188 extends from the front domed portion 184 a length L1. Now turning to Figure 5 , the cylindrical neck 188 has an outer diameter D1. As further explained in detail below, the ends of the anti-rotation device 200 are configured to surround the cylindrical neck 188 of the gas cylinder 180 to assist in securing the gas cylinder 180 to the skid 110. In a preferred embodiment, the rear domed portion 186 lacks any mechanical means configured to assist in removably securing the gas cylinder 180 to the skid 110. For example, the rear domed portion 186 may not have pin holes, threaded plugs, etc. that may be used as part of a means for removably securing the gas cylinder 180 to the skid 110.

[0024] Referring to Figure 1 - 5 , the anti-rotation assembly 100 further includes a longitudinal guide 130 that extends along the top surface 112 of the skid 110. The longitudinal guide 130 contacts the cylindrical central portion 182 of the gas cylinder 180 to prevent rolling of the gas cylinder 180. When the gas cylinder 180 is at least partially positioned within the opening 120, the gas cylinder 180 is seated against the longitudinal guide 130. The anti-rotation assembly 100 further includes a lateral stop 132 that extends across the top surface 112 of the skid 110. The lateral stop 132 mitigates or prevents longitudinal movement of the gas cylinder 180.

[0025] As Figure 2 and 4 best shown, the anti-rotation assembly 100 further includes a bracket 140 disposed on the top surface 112 of the carriage 110. The bracket 140 includes a longitudinal sidewall 142 having a longitudinal opening 144. In some embodiments, the longitudinal opening 144 is circular. In some embodiments, the longitudinal opening 144 is a longitudinal slot. As further explained in detail below, the longitudinal opening 144 is configured to receive a fastener 196.

[0026] Figure 6 A front elevational plan view of an anti-rotation device 200 for removably securing a gas cylinder 180 to the carriage 110 is shown, and Figure 7 a side elevational view of the anti-rotation device 200 is shown. The anti-rotation device 200 includes an elongate body 210 having a first end 220 and a second end 230 having a circular ring 232. The first end 220 includes a hole 222 extending through the first end 220. As Figure 4 and Figure 5 best shown in, the first end 220 is removably secured to the longitudinal opening 144 of the bracket 140 by passing a fastener 196 through the hole 222 of the first end 220 and the longitudinal opening 144 of the bracket 140. The fastener 196 can be secured by a nut 198. In some embodiments, the hole 222 has threads for threaded engagement with the fastener 196. In embodiments where the longitudinal opening 144 of the bracket 140 is a slot, the anti-rotation device 200 can be secured to the bracket 140 at any point along the slot. In other words, in the unlocked state of the anti-rotation device 200, the first end 220 of the anti-rotation device 200 can be translated along the longitudinal slot of the bracket to properly position the gas cylinder 180 on the carriage 110. The unlocked state is defined by the anti-rotation device 200 being unfastened or not secured to the bracket 140, and the locked state is defined by the anti-rotation device 200 being fastened or secured to the bracket 140.

[0027] Returning to reference Figure 6 and 7 , the circular ring 232 has an inner surface 234 that defines an inner diameter D2 of the circular ring 232. The inner surface 234 is configured to surround a cylindrical neck 188 of the gas cylinder 180 (as Figure 5As best shown. In some embodiments, the inner diameter D2 of the ring 232 is sized and configured to create an interference fit between the outer diameter D1 of the cylindrical neck 188 and the inner surface 234, thereby detachably securing the anti-rotation device 200 to the gas cylinder 180. In some embodiments, the ring 232 includes at least one fixing screw 250 that is screwed into at least one hole 235 extending through the ring 232. The advancement of the at least one fixing screw 250 against the cylindrical neck 188 of the gas cylinder 180 can detachably secure the cylindrical neck 188 of the gas cylinder 180 to the ring 232 and thus to the anti-rotation device 200. The at least one fixing screw 250 can secure the cylindrical neck 188 with an interference fit.

[0028] The attached state of the anti-rotation device 200 is defined by being attached to the second end 230 (and more particularly, the ring 232) of the neck 188 of the gas cylinder, and the unattached state of the anti-rotation device 200 is defined by not being attached to the second end 230 of the neck 188 of the gas cylinder 180. The above applies regardless of whether the anti-rotation device 200 is detachably fixed to the cylindrical top 188 by an interference fit between the inner surface 234 and the cylindrical neck 188 or by using at least one fixing screw 250.

[0029] In operation, the gas cylinder 180 is positioned on the skid 110 such that the cylindrical neck 188 of the gas cylinder 180 is aligned with the bracket 140 of the skid 110. Then, the anti-rotation device 200 is detachably fixed to the cylindrical neck 188 of the gas cylinder 180 in the attached state. As Figure 5 shown, the gas cylinder 180 can rotate about the longitudinal axis Y in the first angular direction A1. In the attached state and the unlocked state, the gas cylinder 180 and the anti-rotation device 200 can be rotated together from the first angular position to the second angular position. In the first angular position (as Figure 5 shown), the anti-rotation device 200 abuts the bracket 140 of the skid 110. In the second angular position (shown by the dashed line in Figure 5 ), the anti-rotation device 200 and the gas cylinder 180 rotate about the central axis Y of the gas cylinder 180.

[0030] Return to Figure 3, in some embodiments, the cylindrical neck 188 includes a fill valve 170 having a fill port 172 that points downwardly toward the carriage 110 in the locked state. The fill port 172 is typically oriented downwardly toward the carriage 110 and in the locked state for transportation of the carriage 110 and the gas cylinder 180. Further, when the fill port 172 is oriented downwardly toward the carriage 110, the gas cylinder 180 cannot be refilled. Thus, in order to fill or refill the gas cylinder 180 while the gas cylinder 180 is on the carriage 110, the anti-rotation device 200 can be unlocked in the unlocked state, and the gas cylinder 180 having the anti-rotation device 200 is rotated to a second angular position to fill the gas cylinder 180. The process can then be reversed, and the anti-rotation device 200 can be fastened in the locked state. In some embodiments, the second angular position is up to 180 degrees relative to the first angular position.

[0031] Industrial Applicability

[0032] In operation, the teachings of the present disclosure can find applicability in many industrial applications, such as but not limited to allowing for temporarily rotating the gas cylinder 180, or more generally, changing the orientation of the gas cylinder so that a user can access the pressure relief valve or fill port 172 of the gas cylinder 180. The present disclosure allows for refilling a gas cylinder 180 that has been positioned on the carriage 110, enabling faster refilling. By simply unlocking the first end 220 of the anti-rotation device 200 from the bracket 140 of the carriage 110, the gas cylinder 180 can be rotated up to 180 degrees while still resting on the carriage 110 (and thus it is not necessary to remove the gas cylinder from the carriage 110 for refilling). Since the anti-rotation device 200 remains attached to the gas cylinder 180 in the attached state, even during refilling, to lock the anti-rotation device 220 (and the gas cylinder 180) back onto the carriage 110, the user only needs to rotate the anti-rotation device 220 (and the gas cylinder 180) in the opposite direction and fasten the anti-rotation device 220 to the carriage 110.

[0033] Figure 8 A method 300 for securing a gas cylinder 180 is shown. The method 300 includes positioning 302 the gas cylinder 180 on the top surface 112 of the carriage 110, the gas cylinder 180 having a cylindrical neck 188; positioning 304 the second end 232 of the anti-rotation device 200 onto the cylindrical neck 188 of the gas cylinder; attaching 306 the anti-rotation device 200 to the cylindrical neck 188 of the gas cylinder; positioning 308 the first end 230 of the anti-rotation device 200 against the longitudinal sidewall 142 of the bracket 140 of the carriage 110; and fastening 310 the first end 230 of the anti-rotation device 200 to the bracket 140, thereby defining a first locked state of the anti-rotation device 200.

[0034] In Figure 9A method of filling a gas cylinder 180 fixed to a skid 110 is shown. Method 400 includes positioning 402 the gas cylinder 180 on the top surface 112 of the skid 110, the gas cylinder 180 having a cylindrical neck 188 and a fill valve 170. Method 400 also includes attaching 404 the second end 232 of an anti-rotation device 200 to the cylindrical neck 188 of the gas cylinder 180, positioning 406 the first end 230 of the anti-rotation device 200 against the longitudinal sidewall 142 of a bracket 140 of the skid 110, rotating 408 the gas cylinder 180 and the anti-rotation device 200 from a first angular position to a second angular position along a longitudinal axis Y defined by the cylindrical neck 188 of the gas cylinder 180, connecting the fill port 172 to a gas source, and filling 410 the gas cylinder 180 through the fill port of the fill valve. After filling the gas cylinder 180, method 400 also includes rotating 412 the gas cylinder 180 and the anti-rotation device 200 back to the first angular position, and fastening 414 the first end 230 of the anti-rotation device 200 to the bracket 140.

[0035] By studying the drawings, the disclosure, and the appended claims, those skilled in the art can understand and realize other variations of the disclosed embodiments when implementing the claimed invention. In the claims, the word "comprising" does not exclude other elements or steps, and the indefinite article "a" or "an" does not exclude a plurality. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage. Any reference signs in the claims should not be construed as limiting the scope of the claims.

[0036] Although the invention has been described in detail in the drawings and the foregoing description, such description and description are to be considered illustrative or exemplary and not restrictive. It should be understood that changes and modifications can be made by those of ordinary skill in the art within the scope of the following claims. In particular, the invention encompasses further embodiments having any combination of features from different embodiments described above and below. Additionally, statements characterizing the invention herein refer to embodiments of the invention and not necessarily to all embodiments.

[0037] The terms used in the claims should be construed to have the broadest reasonable interpretation consistent with the foregoing specification. For example, the use of the articles "a" or "the" in introducing an element should not be construed as excluding a plurality of elements. Similarly, the recitation of "or" should be construed as inclusive, such that the recitation of "A or B" does not exclude "A and B", unless it is clear from the context or the foregoing specification that only one of A and B is intended. Further, the recitation of "at least one of A, B, and C" should be construed as one or more of the group of elements consisting of A, B, and C, and should not be construed as requiring at least one of each of the recited elements A, B, and C, whether A, B, and C are related as a class or otherwise. Additionally, the recitation of "A, B, and / or C" or "at least one of A, B, or C" should be construed to include any single entity from the recited elements, such as A, any subset from the recited elements, such as A and B, or the entire list of elements A, B, and C.

[0038] This written description uses examples to disclose the invention, including the best mode, and also enables any person skilled in the art to practice the invention, including making and using any device or system and performing any combination of methods. The patentable scope of the invention is defined by the claims, and may include other examples that occur to those skilled in the art. Such other examples are intended to fall within the scope of the claims if they have structural elements that are not different from the literal language of the claims, or if they include equivalent structural elements that are not materially different from the literal language of the claims.

[0039] Although the system and method have been described in terms of various specific embodiments, those skilled in the art will recognize that the described techniques may be practiced with modifications within the spirit and scope of the claims.

Claims

1. An anti-rotation assembly 100, comprising: A skid 110 having a top surface 112; A bracket 140 disposed on the top surface 112 of the skid 110, the bracket 140 having an opening 144; And An anti-rotation device 200 having an elongated body 210, a first end 220, and a second end 230, the first end 220 being detachably fixed to the opening 144 of the bracket 140, and the second end 230 being detachably fixed to the neck 188 of a gas cylinder 180; Wherein the locked state of the anti-rotation device 200 is defined by the first end 220 of the anti-rotation device 200 fastened to the bracket 140, and the unlocked state of the anti-rotation device 200 is defined by the first end 220 of the anti-rotation device 200 not fastened to the bracket 140; Wherein the anti-rotation device 200 is rotatable about a longitudinal axis Y defined by the neck 188 of the gas cylinder 180 in the unlocked state.

2. The anti-rotation assembly 100 according to claim 1, wherein the attached state of the anti-rotation device 200 is defined by the second end 230 attached to the neck of the gas cylinder, and the unattached state of the anti-rotation device is defined by the second end not attached to the neck of the gas cylinder.

3. The anti-rotation assembly 100 according to claim 2, wherein the anti-rotation device 200 and the gas cylinder 180 are rotatable together about the longitudinal axis in the unlocked state and the attached state.

4. The anti-rotation assembly 100 according to claim 1, wherein the opening 144 of the bracket 140 is a longitudinal slot.

5. The anti-rotation assembly 100 according to claim 4, wherein the first end 220 of the anti-rotation device 200 is translatable along the longitudinal slot of the bracket 140.

6. The anti-rotation assembly 100 according to claim 1, wherein the second end 230 includes a ring 232 having an inner surface 234 configured to surround the neck 188 of the gas cylinder 180.

7. The anti-rotation assembly 100 according to claim 6, wherein the neck 188 of the gas cylinder 180 is detachably fixed to the ring 232 by an interference fit.

8. The anti-rotation assembly 100 according to claim 6, wherein the ring 232 further includes a fixing screw 250.

9. The anti-rotation assembly 100 according to claim 8, wherein the fixing screw 250 is advanced against the neck 188 of the gas cylinder 180 to detachably fix the neck 188 of the gas cylinder 180 to the ring 232.

10. The anti-rotation assembly 100 according to claim 9, wherein the fixing screw 250 fixes the neck 188 of the gas cylinder 180 by an interference fit.

11. The anti-rotation assembly 100 according to claim 1, wherein the gas cylinder 180 and the anti-rotation device 200 are rotatable from a first angular position to a second angular position in the unlocked state, and wherein the first angular position is defined by the anti-rotation device 200 adjacent to the bracket 140.

12. The anti-rotation assembly 100 as claimed in claim 11, wherein the second angular position is at most 180 degrees relative to the first angular position.

13. The anti-rotation assembly 100 as claimed in claim 1, wherein the carriage 110 further comprises a longitudinal guide 130 extending along the surface 112 of the carriage 110.

14. The anti-rotation assembly 100 as claimed in claim 13, wherein the longitudinal guide 130 prevents the rolling of the gas cylinder 180.

15. The anti-rotation assembly 100 as claimed in claim 1, wherein the carriage 110 further comprises a lateral stopper 132 extending across the surface 112 of the carriage 110.

16. The anti-rotation assembly 100 as claimed in claim 15, wherein the lateral stopper 132 prevents the longitudinal movement of the gas cylinder 180.

17. The anti-rotation assembly 100 as claimed in claim 1, wherein the gas cylinder 180 further comprises a rear dome-shaped portion 186 that lacks a mechanism configured to removably secure the gas cylinder 180 to the carriage 110.

18. The anti-rotation assembly 100 as claimed in claim 17, wherein the mechanism is selected from a pin hole and a threaded plug.

19. A method of securing a gas cylinder 180 to a carriage 110, comprising: positioning the gas cylinder 180 on the top surface 112 of the carriage 110, the gas cylinder 180 having a neck 188; positioning a second end 230 of the anti-rotation device 200 on the neck 188 of the gas cylinder 180; attaching the anti-rotation device 200 to the neck 188 of the gas cylinder 180, thereby defining an attached state of the anti-rotation device 200; positioning a first end 220 of the anti-rotation device 200 against a longitudinal side wall 142 of a bracket of the carriage, the bracket being disposed on the top surface 112 of the carriage 110; and fastening the first end 220 of the anti-rotation device 200 to the bracket 140, thereby defining a locked state of the anti-rotation device 200 such that the gas cylinder 180 is removably secured to the carriage 110.

20. The method as claimed in claim 19, wherein an unlocked state of the anti-rotation device 200 is defined by the first end 220 of the anti-rotation device 200 not being fastened to the bracket 140, and wherein a non-attached state of the anti-rotation device 200 is defined by the second end 230 not being attached to the neck 188 of the gas cylinder 180.

21. The method as claimed in claim 19, wherein the anti-rotation device 200 and the gas cylinder 180 are rotatable together about a longitudinal axis Y in the unlocked state and the attached state.

22. A method of filling a gas cylinder 180 secured to a carriage 110, comprising: positioning the gas cylinder 180 on the top surface 112 of the carriage 110, the gas cylinder 180 having a neck 188 and a filling valve 170, and the filling valve 170 having a filling port 172; Attach the second end 230 of the anti-rotation device 200 to the neck 188 of the gas cylinder 180, thereby defining the attached state of the anti-rotation device 200; Position the first end 220 of the anti-rotation device 200 against the longitudinal sidewall 142 of the bracket 140 of the carriage 110. The bracket 140 disposed on the top surface 112 of the carriage 110 defines a first angular position, wherein the unlocked state of the anti-rotation device 200 is defined by the first end 220 of the anti-rotation device 200 not being fastened to the bracket 140; Rotate the gas cylinder 180 and the anti-rotation device 200 about the longitudinal axis Y defined by the neck 188 of the gas cylinder 180 to a second angular position such that the filling valve 170 is accessible; Fill the gas cylinder 180 through the filling port 172 of the filling valve 170; Rotate the gas cylinder 180 and the anti-rotation device 200 to the first angular position; and Fasten the first end 220 of the anti-rotation device 200 to the bracket 140, thereby defining the locked state of the anti-rotation device 200.

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