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US 6,669,167 B2Granted
Structure of a LPG tank valve
AssigneeNone recorded
InventorRichard Lin
Life of this patent
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AssigneeNone recorded
InventorRichard Lin
Estimating the term…
An improved structure of a LPG tank valve having a threaded connector mounted onto a LPG tank and a rotating button being provided to one end of the threaded connector, and an urging device being provided to the threaded connector, and the bottom end of the rotating button aligned with the urging device being provided with an urging rod, the urging device includes a tube body, an urging rod and a spring, and one end of the tube body is vertically locked to the threaded connector, via the connector and the space of the valve, the tube body is provided with the urging rod, and the rod head of the urging rod is higher than the tube body and is protruded into the mouth of the LPG tank valve, and the lower end of the rod head is connected in series with a spring urged the wall of the tube body, and a gap is formed between the rod body of the urging rod and the wall of the tube body and when the valve is mounted onto the tank, the bottom end of the tube body does not urge against the needle valve of the tank and only when the rotating button is depressed, the press down pushes the urging rod and the needle valve is forced to open and the liquefied gas is released.
An improved structure of a LPG tank valve having a threaded connector mounted onto a LPG tank and a rotating button being provided to one end of the threaded connector, and an urging device being provided to the threaded connector, and the bottom end of the rotating button aligned with the urging device being provided with an urging rod, characterized in that the urging device includes a tube body, an urging rod and a spring, and one end of the tube body is vertically locked to the threaded connector, via the connector and the space of the valve, the tube body is provided with the urging rod, and the rod head of the urging rod is higher than the tube body and is protruded into the mouth of the LPG tank valve, and the lower end of the rod head is connected in series with a spring urged the wall of the tube body, and a gap is formed between the rod body of the urging rod and the wall of the tube body and when the valve is mounted onto the tank, the bottom end of the tube body does not urge against the needle valve of the tank and only when the rotating button is depressed, the press down pushes the urging rod and the needle valve is forced to open and the liquefied gas is released.
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
Details of vessels or of the filling or discharging of vessels: arrangement or mounting of valves
Valves: manually actuated
Fittings, valves, filters, or components in connection with the gas storage device: constructional details of valves, regulators
Arrangement of valves, regulators, filters: in direct contact with the pressure vessel
Term ended 8 Mar 2022 (estimated)
(a) Technical Field of the Invention
The present invention relates to an improved structure of a LPG tank valve, and in particular, an urging device within the valve of a LPG tank.
(b) Description of the Prior Art
FIG. 1 is a perspective view of a conventional LPG tank valve and a LPG tank.
FIG. 2 is a sectional view showing the conventional LPG tank valve prior to the opening of the valve.
FIG. 3 is a sectional view showing the conventional LPG tank valve in the course of opening of the valve.
FIG. 1 is a perspective view of a conventional LPG tank valve and a LPG tank. FIG. 2 is a sectional view showing the conventional LPG tank valve prior to the opening of the valve. FIG. 3 is a sectional view showing the conventional LPG tank valve in the course of opening of the valve.
FIG. 4 is a perspective view showing the LPG tank valve in accordance with the present invention. In accordance with the present invention, the urging device 110 is positioned within the LPG tank valve 100 and comprises a tube body 111, an urging rod 112 and a spring 115. One end of the tube body 111 is vertically locked to the threaded connector 101 of the valve 100 and passes through the space 102 of the valve 100. The urging rod 112 is inserted into the tube body 111 and the rod head 113 of the urging rod 112 is higher than the mouth of the tube body 111 and is protruded into the valve 100. The bottom end of the rod head 113 connected in series with the spring 115 urges the wall of the tube body 111, and a gap 114 is formed between the urging rod 112 and the tube body 111.
FIG. 5 is a sectional view showing the LPG tank valve prior to the opening of the valve in accordance with the present invention. When the valve 100 is mounted onto a LPG tank 200, the bottom end of the tube body 111 does not press onto the needle valve 202 of the mouth 201 of the tank and the spring force of the spring 115 pushes up the urging rod 112. At this instance, the liquefied gas within the tank 200 is similar to that in a tank without the valve 100. As the needle valve 202 seals the tank 200 and the liquefied gas will not release from the tank 200. As shown in FIG. 6, when the gas is to be released, the rotating button 120 of the valve 100 is rotated downward and the button 120 is protruded to the press rod 121 of the valve 100 to push down the rod head 113, and the spring force of the spring 115 is overcome. This will cause the urging rod 112 to press open the needle valve 202 of the mouth of the tank 201 to release the liquefied gas within the tank 200. The gas will flow from the gap 114 to the space 102 of the valve 100 via the outlet tube 103 of the valve 100 to the burner 30.