US3019807A

US3019807A - Filling valve for lighter tanks

Info

Publication number: US3019807A
Application number: US22922A
Authority: US
Inventors: Projahn Emil
Original assignee: Gebr KOLLISCH
Current assignee: Gebr KOLLISCH
Priority date: 1959-11-13
Filing date: 1960-04-18
Publication date: 1962-02-06
Anticipated expiration: 1979-02-06

Description

Feb. 6, 1962 E. PROJAHN FILLING VALVE FOR LIGHTER TANKS Filed April 18, 1960 Fig. 2

Fig. 3

3,019,807 Patented Feb. 6, 1962 3,019,807 FILLING VALVE FOR LIGHTER TANKS Emil Proiahn, Nurnberg, Germany, assigner to Gebruder Kollisch, Nnrnberg, Germany Filed Apr. 18, 1960, Ser. No. 22,922 Claims priority, application Germany Nov. 13, 1959 7 Claims. (Cl. 137-199) The present invention relates to a filling valve for the filling of permanently built-in or exchangeable tanks or reservoirs for lighters, especially of tanks or reservoirs to be filled with liquefied gas.

In connection with filling valves for lighter tanks, valves are known which in addition to the filling passage also comprise a venting passage. These known valves have either a hollow needle `adapted to be inserted 'into the valve shank of an aerosol or filling container, or they are designed as ball valves.

Valves of this type have the drawback that they do not work satisfactorily, or cause a loss in fluid. Thus, when employing a ball valve, gas escapes into the open air taking the path of least resistance.

It is, therefore, an object of the present invention to provide a filling valve for lighter tanks or reservoirs,

which will overcome the above mentioned drawbacks.

It is another object of this invention to provide a filling valve for lighter tanks or reservoirs, which will prevent the liquefied gas from escaping around the valve shank toward the outside.

it is still another object of this invention to provide a filling valve of the type set forth in the preceding paragraphs, which will permit the passage of gas but will prevent the passage of liquid, such as liquefied gas.

These and other objects and advantages of the invention will appear more clearly from the following specification in connection with the accompanying drawings, in which:

FIG. l is a fragmentary elevation of a filling container such as an aerosol can provided with a spray or filling nozzle having a conical tip of synthetic material.

FIG. 2 shows a gas tank or reservoir of a lighter with the filling valve in its filling position.

head 9 when the latter occupies its closing postion as shown in FIG. 3. As will be evident from FIGS. 2 and 3, the valve shank 5 is provided with a longitudinal bore 10 therethrough and with a transverse bore 11 near the lower end of bore 10. As will be seen from the drawing, the inner surface of collar 13 and of rubber seal 7 confine with the outside of the shank 5 a passage for the air and gas from the tank or reservoir.

14 is a filling or aerosol container provided with a filling or spray nozzle 8 having a tip 8a of synthetic material, as for instance rubber foam 'or plastic.

As will be seen from the drawing, the gas container 1 is provided with a complete filling valve. The filling process is as follows:

Part 8a of the nozzle 8 is pressed into the funnelshaped part'3a of the nipple 3 of the valve. As a result thereof, valve head 9 is lifted off from the rubber seal 7, thereby freeing the transverse bore 11. The liquefied gas y .then passes from container 14 into thel lighter container FIG, 3 corresponds to FIG. 2 with the exception that A the valve occupies its closing position.

The lling valve according to the present invention for filling permanently built-in or exchangeable lighter tanks or reservoirs -is characterized primarily by an arrangement of a semi-permeable uni-laterally osmotically acting absorber which allows the passage of gas and air but prevents the passage of liquid or liquefied gas.

Referring now to the drawings in detail, the arrangement shown in FIGS. 2 and 3 comprises a gas container or reservoir l having mounted thereon a valve holder 2. Movably arranged in the valve holder 2 is a valve nipple 3 which is continuously urged in upward or closing direction by means of a spring 4. rl`he valve nipple 3 comprises a shank 5 and a conically shaped valve head 9 connected thereto or integral with said shank. The valve holder 2 is provided with an inwardly extending collar 13 having mounted thereon an absorber ring 6, the upper surface of which is engaged by the lower end of spring 4 whereas the upper end of spring 4 engages the upper end of the nipple 3. It will thus be evident that the absorber ring 6 is firmly pressed against collar 13 by spring 4. The absorber ring is porous and may consist of cardboard, sinter metal, or the like. It is necessary that the said absorber ring is permeable to air but must be able to prevent the passage of liquid therethrough.

The arrangement shown in the drawings furthermore comprises a rubber ring 7 which engages the lower surface of the collar 13 and serves as valve seat for the valve 1. The air or air-gas mixture in container 1 will then escape around valve shank 5 through absorber 6 and between nipple 3 and valve holder 2.

The absorber 6 according to the invention will assure that the liquefied gas cannot escape toward the outside around the valve shank. While the gas under pressure is filled into the lighter tank 1, the pressure in container 1 is lower than that prevailing in the lling container or aerosol can 14. Absorber 6k has an annular shape and extends around valve shank 5. As stated above, the purpose of the absorber consists in retaining the liquefied gas and to allow the air and gas particles in container 1 to escape therefrom to make room for the fresh charge of liquefied gas.

It is, of course, to be understood that the present invention is, by no means, limited to the particular construction shown in the drawings but also comprises any modifications Within the scope of the appended claims.

What I claim is:

l. A filling valve for a tank for liquefied gas comprising: tubular holder means insertable in the upper part of the tank, a valve seat on the inner end of said holder means, a semi-permeable unilaterally osmotically acting means in the holder means between the valve seat and the atmosphere, a valve member extending reciprocably through said holder means having a valve head engageable with the tank side of said seat, a spring urging the valve member in a direction to cause the head to engage the seat and yieldable to permit movement of the valve member to separate the head from the seat, said valve member having means sealingly engaging the atmosphere side of said semi-permeable uni-laterally osmotically acting means adjacent the valve member when the valve head is moved ofi said seat, a filling bore extending into the valve member from the end opposite the valve head and opening laterally from the valve member adjacent the seat so as to communicate with the tank side of the seat only when the valve head is moved ofi said seat, and a passage leading through said valve seat and along the outside of the valve member to the tank side of said semipermeable unilaterally osmotically acting means for the passage of gas from the tank side of the seat while preventing passage of liquid therefrom.

2. A filling valve according to claim l in which said valve head is conical and said valve seat is a fiuid impervious resilient ring.

3. A filling valve for a tank for liquefied gas comprising: tubular holder means insertable in the upper part of the tank, a valve seat on the inner end of said holder means, a semi-permeable unilaterally osmotically acting means in the outer end of said holder means, a valve member reciprocably mounted in said holder means having a shank closely fitting said semi-permeable unilaterally osmotically acting vmeans while loosely tting said holder means and seat, a valve head on the valve member on the tank side of the seat, 4a spring acting on the valve member to urge the head into sealing engagement with the seat and yiel'dable to pe'rn'iit movement 'of V`the valve member to 'separate the valve head from the seat, Va lilling bore extending into the valve Vmember from the outer end thereof and opening laterally from the shank adjacent the seat, and flange means on the outer end of the valve member for engaging the said semi-permeable unilaterally osmotically acting means when the vvalve member is moved inwardly to provide for the 'supply of liqueed gas to the tank side of the seat with the simultaneous release of gas only therefrom. p

4. Afilling valve according to claim 3 inwhicli both said valve seat and said semi-permeable unilaterally los motically acting means are located inside said tubular holder means and said tubular holder means includes an inwardly projecting annular collar betweenand in supporting engagement with said seat and said semi-per# meable unilaterally osmotically acting means. Y

5. A filling valve for the lling of a lighter tank Vwith liquefied gas, which comprises: tubularV holding inea'ns' insertable into a lighter tank to be lled with liq'uee'd gas, said holding means includinga valve seat at the inner end, a valve member reciprocably mounted within said holding means comprising a shank andhaving' a valve head at the inner end on the tank side of said valve seat for cooperation therewith, said valve member having the' outer end thereof provided with liange means, semi-permeable unilaterally osmotically acting means in the outer end of said holdingfmeans beneath the said flange' means onthe valve member for permitting thepassage of a gaseous medium through said semi-permeable unilatrally osmotically acting means while preventing liquefied gas from passing therethrough, spring means interposed between said unilaterally acting means and said flange meansfor urging said valve member in the outward direction to cause said head to engage said seat, axial passage means extending from the outer end of said valve member to a point near said ,valve head, and passage means near the inner end of said axial passage means and communicating with the tank side of the seat to be lled when said valve member is lifted off said valve seat and also communicating with said axial passage means, there also being passage means leading from the tankside of the seat through said seat and along the yshank of the valve member to the inner side of said semi-permeable unilaterally osmotcally acting means. l v l6. valve accrdingr'to claim 5 which said hold'erprneans' includes an inwardly projecting annular collar between the ends `on the outer surface ot which said semi-permeable unilaterally osmotically acting means rests while the said valve seat is disposed on the inner side of said collar. l

f7. A` filling device according to claim 6 in which said valve seat is a ilud impervious ring;

eferncs Cited inthe tile of this patent UNTED STATES PATENTS 2,558,620 `Lis-6e; June '26, 1951 2,576,192 Panik Nov. 27, 1951 2,610,766 one sept. 16, 1952 wijk..