Tap for a gas cylinder having a visual pressure indicator
AssigneeLuxembourg Patent Company S.A.
InventorJean-Claude Schmitz
Life of this patent
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Abstract
The invention relates to a device for controlling the flow and/or pressure of a pressurized gas, and specifically to a tap for a pressurized-gas cylinder. The tap includes a body having a gas inlet, a gas outlet, and a passage connecting the inlet to the outlet. The tap also includes a valve for closing the passage, as well as a pressure indicator downstream from the closing valve. The pressure indicator is translatably operated and includes just two stable positions, i.e. one that corresponds to the presence of pressure, and the other to the absence of pressure.
Claims18
A flow pressure control device for pressurized gas, said device comprising:
- a body with a gas inlet, a gas outlet and a passage connecting the inlet to the outlet;
- a shut-off valve of the passage;
- and
- a pressure indicator in the passage downstream of the shut-off valve, the indicator comprising a sliding member subjected to fluid pressure and to an opposing resilient force, the sliding member structured and operable to have:
- a first position in the absence of pressure, and
- a single second position in the presence of a pressure range of from 5 bar to a maximum working pressure of the device;
- wherein the sliding member comprises a piston and a visual element attached to the piston, and the pressure indicator comprises a specific body with a through bore adapted to receive the piston at one end of the bore, the through bore forming a cylindrical portion sealingly receiving the piston, and the visual element being attached to the piston at the other end of the bore and wherein the pressure indicator is structured and operable so that the sliding member is free of mechanical cooperation generating rotation with another member during its sliding.
Dependencies are inferred from the claim text.