Handle assembly for a portable pressurized gas cylinder

Abstract

A portable gas cylinder is disclosed which includes a gas cylinder including an upper portion having a valve port and an annular mounting collar surrounding the valve port, a handle assembly including a housing having a body portion configured to mate with the upper portion of the gas cylinder, a pair of diametrically opposed gripping handles extending upwardly from the body portion and a central aperture providing access to the valve port, wherein an annular retention channel is formed in an undersurface of the housing, extending about the periphery of the central aperture for receiving the mounting flange of the gas cylinder, and a blocking ring for securing the mounting flange of the gas cylinder within the retention channel of the handle assembly.

Claims

1. A method of assembling a portable gas cylinder comprising the steps of: a) providing a gas cylinder for receiving a pressurized gas, the cylinder including an upper portion having a valve port and an annular mounting collar surrounding the valve port; b) providing a handle assembly including a housing configured to mate with the upper portion of the gas cylinder, the housing having a central aperture for gaining access to the valve port, and an annular retention channel formed in an undersurface of the housing, extending about the periphery of the central aperture for receiving the annular mounting collar of the gas cylinder; c) mating the housing of the handle assembly with the upper portion of the gas cylinder so that the mounting collar of the gas cylinder is located within the retention channel of the housing; and d) engaging a blocking ring within the aperture of the housing to secure the mounting collar of the gas cylinder within the retention channel of the housing.

2. A method of assembling a portable gas cylinder according to claim 1, wherein the step of mating the housing of the handle assembly with the upper portion of the gas cylinder so that the mounting collar of the gas cylinder is located within the retention channel of the housing includes positioning a plurality of circumferentially spaced apart arcuate flanges extending radially outwardly from the mounting collar within a corresponding plurality of circumferentially spaced apart arcuate seating areas formed in the retention channel of the housing.

3. A method of assembling a portable gas cylinder according to claim 1, further comprising the step of rotating the handle assembly relative to the gas cylinder to position the plurality of circumferentially spaced apart arcuate flanges extending radially outwardly from the annular mounting collar within a plurality of circumferentially spaced apart arcuate reception grooves formed within the reception channel of the housing.

4. A method of assembling a portable gas cylinder according to claim 3, further comprising the step of engaging a pair of diametrically opposed engagement tangs formed on the blocking ring within a pair of corresponding diametrically opposed engagement ports formed in the housing of the handle assembly on the periphery of the central aperture to prevent further rotation of the handle assembly relative to the gas cylinder.

5. A portable gas cylinder comprising: a) a gas cylinder including an upper portion having a valve port and an annular mounting collar surrounding the valve port; b) a handle assembly including a housing having a body portion configured to mate with the upper portion of the gas cylinder, a pair of diametrically opposed gripping handles extending upwardly from the body portion of the housing and a central aperture providing access to the valve port, wherein an annular retention channel is formed in an undersurface of the housing, extending about the periphery of the central aperture for receiving the mounting collar of the gas cylinder; and c) a blocking ring for securing the mounting collar of the gas cylinder within the retention channel of the handle assembly, wherein the mounting collar includes a plurality of circumferentially spaced apart radially outwardly extending arcuate flanges, and the annular retention channel includes a plurality of circumferentially spaced apart arcuate reception grooves for receiving the plurality of flanges when the handle assembly is rotated relative to the gas cylinder upon the mating thereof.

6. A portable gas cylinder as recited in claim 5, wherein the annular retention channel includes a plurality of circumferentially spaced apart arcuate seating areas adjacent to the plurality of circumferentially spaced apart arcuate reception grooves for initially accommodating the circumferentially spaced apart radially outwardly extending arcuate flanges prior to rotating the handle assembly relative to the gas cylinder.

7. A portable gas cylinder as recited in claim 5, wherein the blocking ring includes an upper horizontal rim portion and lower vertical hub portion, and wherein a pair of diametrically opposed engagement tangs extend downwardly from an outer periphery of the rim portion for engaging a pair of corresponding diametrically opposed engagement ports formed in the housing of the handle assembly on the periphery of the central aperture to prevent further rotation of the handle assembly relative to the gas cylinder by blocking an adjacent arcuate flange of the mounting collar from moving out of an arcuate reception grooves.

8. A portable gas cylinder as recited in claim 7, wherein the blocking ring includes a plurality of circumferentially spaced apart deflectable arcuate ramps that project radially outwardly from the hub portion to mechanically engage below the undersurface of housing to secure the blocking ring to the housing.

9. A portable gas cylinder as recited in claim 8, wherein the deflectable arcuate ramps of the blocking ring are adapted and configured to produce an audible sound upon engagement with the undersurface of the housing to provide an indication that the blocking ring is firmly secured to the housing.

10. A handle assembly for a portable gas cylinder comprising: a) a housing having a body portion configured to mate with an upper portion of the gas cylinder and including a pair of diametrically opposed gripping handles extending upwardly from the body portion, the housing defining a central aperture for gaining access to a valve port of the cylinder, wherein an annular retention channel is formed in an undersurface of the housing, extending about the periphery of the central aperture, for receiving an annular mounting collar of the gas cylinder which surrounds the valve port; and b) a blocking ring for securing the mounting collar of the gas cylinder within the retention channel of the handle assembly, wherein the blocking ring includes an upper horizontal rim portion and lower vertical hub portion, and wherein a pair of diametrically opposed engagement tangs extend downwardly from an outer periphery of the rim portion for engaging a pair of corresponding diametrically opposed engagement ports formed in the housing of the handle assembly on the periphery of the central aperture to prevent further rotation of the handle assembly relative to the gas cylinder by blocking an adjacent arcuate flange of the mounting collar from moving out of an arcuate reception grooves.

11. A handle assembly for a portable gas cylinder as recited in claim 10, wherein the annular retention channel includes a plurality of circumferentially spaced apart arcuate reception grooves for receiving a plurality of circumferentially spaced apart arcuate flanges extending radially outwardly from the annular mounting collar when the handle assembly is rotated relative to the gas cylinder upon the mating thereof.

12. A handle assembly for a portable gas cylinder as recited in claim 11, wherein the annular retention channel includes a plurality of circumferentially spaced apart arcuate seating areas adjacent to the plurality of circumferentially spaced apart arcuate reception grooves for initially accommodating the circumferentially spaced apart radially outwardly extending arcuate flanges prior to rotating the handle assembly relative to the gas cylinder.

13. A handle assembly for a portable gas cylinder as recited in claim 10, wherein the blocking ring includes a plurality of circumferentially spaced apart deflectable arcuate ramps that project radially outwardly from the hub portion to mechanically engage below the undersurface of housing to secure the blocking ring to the housing.

14. A handle assembly for a portable gas cylinder as recited in claim 13, wherein the deflectable arcuate ramps of the blocking ring are adapted and configured to produce an audible sound upon engagement with the undersurface of the housing to provide an indication that the blocking ring is firmly secured to the housing.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) So that those skilled in the art to which the subject invention appertains will readily understand how to make, use and assembly the portable gas cylinder of the subject invention without undue experimentation, preferred embodiments thereof will be described in detail herein below with reference to certain figures, wherein:

(2) FIG. 1 is a perspective view of the upper portion of a portable gas cylinder constructed in accordance with a preferred embodiment of the subject invention;

(3) FIG. 2 is an exploded perspective view of the upper portion of the portable gas cylinder shown in FIG. 1, with parts separated for ease of illustration, including the annular mounting collar on the upper portion of the gas cylinder, the handle assembly which has a housing having a body portion for mating with the upper portion of the gas cylinder and the blocking ring which secures the body portion of the handle assembly to the mounting collar of the gas cylinder;

(4) FIG. 3 is a perspective view of the underside of the handle assembly shown in FIGS. 1 and 2, wherein the mounting collar associated with the top portion of the gas cylinder is shown removed from the gas cylinder and engaged within the retention channel of the housing of the handle assembly;

(5) FIG. 3a is a localized cross-sectional view taken along line 3a-3a of FIG. 3 showing the local relationship of the mounting collar and retention channel when the radially outwardly projecting flanges of the mounting collar are initially spaced apart from the reception grooves of the retaining channel;

(6) FIG. 4 is another perspective view of the underside of the handle assembly, wherein the housing of the handle assembly has been rotated relative to the gas cylinder through an angle of approximately 30 degrees, as illustrated by position of the mounting collar within the retention channel;

(7) FIG. 4a is a localized cross-sectional view taken along line 4a-4a of FIG. 4 showing the local relationship of the mounting collar and retention channel when the radially outwardly projecting flanges of the mounting collar are engaged within the reception grooves of the retaining channel;

(8) FIG. 5 is another perspective view of the underside of the handle assembly, wherein the blocking ring is engaged within the central aperture of the housing of the handle assembly, to mechanically secure the mounting collar of the gas cylinder within the retention channel of the handle assembly housing;

(9) FIG. 5a is a localized cross-sectional view taken along line 5a-5a of FIG. 5 showing the local relationship of the mounting collar and retention channel when the blocking ring has been engaged;

(10) FIG. 6 is another perspective view of the underside of the handle assembly, with the blocking ring engaged, as in FIG. 5;

(11) FIG. 6a is a localized cross-sectional view taken along line 6a-6a of FIG. 6 showing the radial extent of one of the diametrically opposed engagement tangs associated with the blocking ring;

(12) FIG. 7 is another perspective view of the underside of the handle assembly, with the blocking ring engaged, as in FIGS. 5 and 6; and

(13) FIG. 7a is a localized cross-sectional view taken along line 7a-7a of FIG. 7 showing the transverse extent of the engagement tang shown in FIG. 6a.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

(14) Referring now to the drawings, wherein like reference numerals identify similar structural features or aspects of the subject invention, there is illustrated in FIG. 1 a new and unique portable gas cylinder designated generally by reference numeral 10. The portable gas cylinder of the subject invention provides a handle assembly 22 for a gas tank 12 with improved ergonomics and portability relative to prior art gas cylinders made from steel, and which are relatively easy and cost effective to manufacture and install.

(15) Referring to FIG. 2, the portable gas cylinder 10 includes a gas cylinder or tank 12 for receiving a pressurized gas, such as propane or the like. The gas tank 12 includes an upper portion 14 having a valve port 16 and an annular mounting collar 18 surrounding the valve port 16. The mounting collar 18 includes a plurality of circumferentially spaced apart radially outwardly extending arcuate flanges 20.

(16) The portable gas cylinder 10 further includes a handle assembly 22 including a housing 24 having a body portion 26 configured to mate with the upper portion 14 of the gas tank 12. The housing 24 includes a pair of diametrically opposed gripping handles 28 and 30 extending upwardly from the body portion 26 and a central aperture 32 providing access to the valve port 16 of the gas tank 12.

(17) Referring to FIGS. 3 and 3a, an annular retention channel 34 is formed in an undersurface of the housing 24 of handle assembly 22, extending about the periphery of the central aperture 32, for receiving the mounting collar 18 of the gas tank 12. A blocking ring 40 is provided for securing the mounting collar 18 of the gas tank 12 within the retention channel 34 of the handle assembly 22.

(18) As best seen in FIGS. 4 and 4a, the annular retention channel 34 of the handle assembly 22 includes a plurality of circumferentially spaced apart arcuate seating areas 35 and a plurality of circumferentially spaced apart arcuate reception grooves 36 for receiving the plurality of arcuate flanges 20 when the handle assembly 22 is rotated relative to the gas tank 12 upon the mating thereof. The seating areas 35 are spaced to readily accommodate the arcuate flanges 20 during the handle assembly process.

(19) As best seen in FIG. 2, the blocking ring 40 includes an upper horizontal rim portion 52 and lower vertical hub portion 54. A pair of diametrically opposed engagement tangs 42 and 44 extend from an outer periphery of the rim portion 52 for engaging a pair of corresponding diametrically opposed engagement ports 46 and 48 formed in the housing 24 of the handle assembly 22 on the periphery of the central aperture 32 (see FIG. 5). In addition, a plurality of circumferentially spaced apart deflectable ramps 56 project radially outwardly from the hub portion 54 of blocking ring 40, as shown in FIGS. 5 and 5a.

(20) The ramps 56 are adapted and configured to slide passed the periphery of the central aperture 32 while deflecting radially inwardly and then return to a neutral position mechanically engaged below the undersurface of housing 24, to secure the blocking ring 40 to the housing 24, as best seen in FIGS. 5 and 5a. Advantageously, upon mechanically engaging the ramps 56 of blocking ring 40 to housing 24, an audible indication is produced to enable the assembler to ensure that the blocking ring is firmly secured in place.

(21) To assemble the portable gas cylinder 10 of the subject invention, the housing 24 of the handle assembly 22 is mated with the upper portion 14 of the gas tank 12 so that the mounting collar 18 of the gas tank 12 is located within the retention channel 34 of the housing 24, as illustrated in FIG. 3. At such a time, each arcuate mounting flange 20 of mounting collar 18 is initially accommodated within a corresponding seating area 35 of retention channel 34, as best seen in FIG. 3a.

(22) Then, as shown in FIG. 4, the handle assembly 22 is rotated through an angle of approximately 30 degrees relative to the upper portion 14 of the gas tank 12. This serves to position the plurality of circumferentially spaced apart arcuate flanges 20 extending radially outwardly from the annular mounting collar 18 within the plurality of circumferentially spaced apart arcuate reception grooves 36 formed within the retention channel 34 of the housing 24, as best seen in FIG. 4a.

(23) Thereafter, as illustrated in FIG. 5, the blocking ring 40 is engaged within the central aperture 32 of the housing 24 to secure the mounting collar 18 of the gas tank 12 within the retention channel 34 of the housing 24, as best seen in FIG. 5a. More particularly, the plurality of circumferentially spaced apart deflectable ramps 56 secure the blocking ring 40 to the undersurface of housing 24, as best seen in FIG. 5a. In addition, as illustrated, the pair of diametrically opposed engagement tangs 42 and 44 are engaged within the corresponding engagement ports 46 and 48 in the housing 24 of handle assembly 22.

(24) Referring to FIGS. 6 and 7, when the tangs 42 and 44 are engaged within the ports 46 and 48, they effectively block or otherwise prevent the adjacent arcuate flanges 20 of mounting collar 18 from moving out of the arcuate reception grooves 36 of retention channel 34, as shown in FIGS. 6a and 7a.

(25) While the subject invention has been shown and described with reference to preferred embodiments, those skilled in the art will readily appreciate that various changes and/or modifications may be made thereto without departing from the spirit and scope of the subject invention as defined by the appended claims.