Fluid handling – Diverse fluid containing pressure systems – Gas pressure storage over or displacement of liquid
Reexamination Certificate
1999-09-24
2001-02-20
Lazarus, Ira S. (Department: 3743)
Fluid handling
Diverse fluid containing pressure systems
Gas pressure storage over or displacement of liquid
C431S344000, C222S113000, C222S159000
Reexamination Certificate
active
06189557
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a fuel gas supply for use with a gas burner, and more particularly to such a fuel gas supply, which comprises a connector assembly installed in a fuel gas cylinder, the connector assembly having a gas inlet controlled by a gas inlet control valve for input of air and a gas outlet controlled by a gas outlet control valve for output of fuel gas to a gas burner, and a pump mounted on a guard at the fuel gas cylinder and controlled to pump air into the air inlet at the connector assembly for mixing the fuel gas in the fuel gas cylinder.
FIG. 1
shows a fuel gas supply for a gas burner, which is comprised of a fuel gas cylinder
10
, and a pump
11
. The fuel gas cylinder
10
comprises an inlet pipe
103
on the inside, a gas outlet
105
and a fuel oil filling hole
107
on the outside. The gas outlet
105
is connected to the gas burner (not shown) through a gas outlet tube
12
. The pump
11
is mounted on a guard
13
at the top of the fuel gas cylinder
10
, and connected to the inlet pipe
103
by a guide tube
115
. When the fuel oil filling hole
107
is opened, fuel oil can then be filled into the fuel gas cylinder
10
. When the pump
11
is started, air is pumped through the inlet pipe
103
into the inside of the fuel gas cylinder
10
to mix with fuel oil, and to produce fuel gas for output to the gas burner through the gas outlet
105
and the gas outlet tube
12
. Because the fuel gas cylinder
10
is specially designed, regular commercially available fuel gas cylinders cannot be used as a substitute.
SUMMARY OF THE INVENTION
The present invention has been accomplished under the circumstances in view. According to one aspect of the present invention, the fuel gas supply is comprised of a fuel gas cylinder, which can be easily obtained from the market, a connector assembly installed in the fuel gas cylinder for output of fuel gas and input of air, and a pump mounted on the top guard at the fuel gas cylinder and controlled to pump air into the connector assembly and the fuel gas cylinder to mix with fuel oil in the fuel gas cylinder, causing a fuel gas to be produced. According to another aspect of the present invention, a transparent tube is connected between the connector assembly and the pump for guiding air from the pump to the connector assembly and the fuel gas cylinder. Wherein the transparent tube comprises a plurality of check valves that prevent reverse flow of fuel gas from the fuel gas cylinder to the pump. According to still another aspect of the present invention, the connector assembly comprises a gas inlet connected to the pump, a gas outlet connected to the gas burner, a gas inlet control valve rotated to close/open the gas inlet, and a gas outlet control valve rotated to close/open the gas outlet.
REFERENCES:
patent: 1441171 (1923-01-01), Rice
patent: 2335595 (1943-11-01), Kromer et al.
patent: 2838292 (1958-06-01), Bramming
patent: 3140740 (1964-07-01), Lagreid et al.
patent: 3520323 (1970-07-01), Lamb
patent: 5611366 (1997-03-01), Creffield et al.
patent: 797288 (1958-07-01), None
Clarke Sara
Lazarus Ira S.
Rosenberg , Klein & Lee
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