Fluid sprinkling – spraying – and diffusing – Including supply holder for material – Fluid pressure discharge means
Reexamination Certificate
2000-10-06
2002-07-16
Evans, Robin O. (Department: 3752)
Fluid sprinkling, spraying, and diffusing
Including supply holder for material
Fluid pressure discharge means
C239S338000, C239S350000, C239S354000, C239S355000, C239S358000, C239S548000
Reexamination Certificate
active
06419168
DESCRIPTION:
In the embodiment of a metering head according to the present invention, which is shown in FIG. 1 , the metering head 1 is fixedly secured on a gas bottle 2 containing liquified fuel gas. For securing of the metering head 1 on the bottle 2 , there are provided, in the lower region of the metering head 1 , resilient hooks 3 which extend downwardly from the lower portion of the metering head 1 and engage beneath a circumferential head 4 of the upper end side of the gas bottle 2 .
Inside of the metering head 1 , there is located a metering valve 5 a longitudinal axis 6 of which coincides with a longitudinal axis 7 of the gas bottle 2 . A ventilation chamber (not shown) of the metering valve 5 has its inlet side connected with hollow pin 8 which extend from a bottom 9 of the metering head 1 . When the metering head 1 is secured on the gas bottle 2 , the hollow pin 8 engages in the outlet valve of the gas bottle 2 , opening the valve. Liquified gas flows from the gas bottle 2 through the hollow pin 8 into a channel 10 of the metering valve 5 , reaching the metering chamber of the metering valve 5 . The metering chamber of the metering valve 5 is constantly filled through its inlet with the fuel gas when the metering head 1 is secured on the gas bottle 2 and is not actuated. The outlet of the metering chamber of the metering valve 5 remains closed and becomes open only when needed, with the inlet of the metering chamber being closed for a short time.
The outlet of the metering chamber of the metering valve 5 is connected with an annular channel 12 by an outlet channel 11 of the metering valve 5 and a connection channel 13 . Two transverse channels 14 and 15 open, respectively, into two spout-out nozzles 16 and 17 .
The annular channel 12 , the connection channel 13 , and the transverse channels 14 and 15 are all located in a cap portion 18 of the metering head 1 . The lower region of the cap portion 18 circumscribes the metering head chamber containing the metering valve 5 and the bottom member 19 of the metering head 1 which carries the metering valve 5 . The bottom member 19 is displaceable along the longitudinal axis 6 of the metering valve 5 . The hooks 3 and the hollow pin 8 , which were discussed above, are provided on the bottom member 19 and, e.g., are formed integrally therewith.
The outlet channel 11 of the metering valve 5 extends along the metering valve axis 6 and is dischargeable in a correspondingly extending portion of the connection channel 13 . When the gas bottle 2 is lifted and the bottom member 19 is pushed into the cap portion 18 , an outer flange 20 of the metering valve 5 is lifted, which results in the inlet valve of the metering valve 5 being closed and the outlet valve of the metering valve 5 being open, with a metered volume of the liquefied fuel gas reaching the spout-out nozzles 16 , 17 . The spout out. nozzles 16 , 17 are located in cylindrical members 21 , 22 connected with the cap portion 18 . The cylindrical members 21 , 22 are provided with outer sealing rings 23 , 24 , respectively, and therewith are sealingly inserted in corresponding openings formed in the wall of a combustion chamber of a setting tool. The cap portion 18 is fixedly connected to this wall. The longitudinal axes 25 , 26 of the spout-out nozzles 16 , 17 , which form outlets of the metering head 1 , extend transverse to the longitudinal axis 6 of the metering valve 5 . Upon lowering of the gas bottle 2 , the bottom member 19 which is fixedly connected with the gas bottle 2 as described above, also moves downwardly. The downward movement of the bottom member 19 results in closing of the outlet of the metering chamber 5 and opening of its inlet, and the metering chamber of the metering valve 5 is again filled with the liquified fuel gas.
FIGS. 3-4 show a second embodiment of the metering head according to the present invention. In FIGS. 3-4 , the elements of the metering head 1 identical with those shown in FIGS. 1-2 , are designated with the same reference numerals and will not be further described.
The embodiment of the
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patent: 6149077 (2000-11-01), Pohler
Thieleke Joachim
Towfighi Kaveh
Wolf Iwan
Evans Robin O.
Hilti Aktiengesellschaft
Sidley Austin Brown & Wood LLP
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