Breathing gas dispenser with selectable output flow rates
First Claim
1. A breathing gas dispenser with selectable output flow rates, the dispenser comprising:
- a vessel containing a supply of breathable gas at storage pressure, the vessel in fluid communication with a regulator assembly, the regulator assembly capable of reducing the pressure of the gas to a delivery pressure in a chamber, the chamber having an outlet;
a plate disposed in the chamber, the plate having a plurality of openings defined therein, the openings disposed in pairs comprising a first opening and a second opening, at least one of the first and the second opening containing an orifice housing with a precision metering orifice defined therein; and
, a flow selector capable of causing the plate to rotate such that each of the pairs of openings are sequentially brought into registry with the outlet such that a user can select an output flow rate.
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Accused Products
Abstract
A breathing gas dispenser with selectable output flow rates. The dispenser includes a vessel containing a supply of breathable gas at storage pressure. The vessel is in fluid communication with a regulator assembly capable of reducing the pressure of the gas to a delivery pressure in a chamber. A plate is disposed in the chamber. The plate has a plurality of openings defined therein. The openings are disposed in pairs including a first opening and a second opening. The first or second opening or both may contain an orifice housing with a precision metering orifice defined therein. A flow selector is capable of causing the plate to rotate such that each of the pairs of openings are sequentially brought into registry with the outlet such that a user can select an output flow rate.
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Citations
31 Claims
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1. A breathing gas dispenser with selectable output flow rates, the dispenser comprising:
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a vessel containing a supply of breathable gas at storage pressure, the vessel in fluid communication with a regulator assembly, the regulator assembly capable of reducing the pressure of the gas to a delivery pressure in a chamber, the chamber having an outlet;
a plate disposed in the chamber, the plate having a plurality of openings defined therein, the openings disposed in pairs comprising a first opening and a second opening, at least one of the first and the second opening containing an orifice housing with a precision metering orifice defined therein; and
,a flow selector capable of causing the plate to rotate such that each of the pairs of openings are sequentially brought into registry with the outlet such that a user can select an output flow rate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A breathing gas dispenser with selectable output flow rates, the dispenser comprising:
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a vessel containing a supply of breathable gas at storage pressure, the vessel being in fluid communication with a regulator assembly, the regulator assembly reducing the pressure of the gas to a delivery pressure in a chamber, the chamber having an outlet;
a valve member disposed in fluid communication with the chamber, the valve member having a first passageway and a second passageway;
an indexer having an opening for receiving the valve member and having a bottom wall, the indexer capable of rotating relative to the valve member;
a plate mounted in the indexer, the plate having a plurality of openings defined therein, the openings disposed in pairs comprising a first opening and a second opening, at least one of the first and the second opening containing an orifice housing having a precision metering orifice disposed therein;
a chamber disposed between the plate and the bottom wall of the indexer; and
,a knob capable of causing the indexer to rotate such that each pair of openings in the plate is sequentially brought into registry with the first and second passageways in the valve member. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A breathing gas dispenser with selectable output flow rates, the dispenser comprising:
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a vessel containing a supply of a breathable gas at storage pressure, the vessel in fluid communication with a regulator assembly, the regulator assembly reducing the pressure of the gas to a delivery pressure in a chamber, the chamber having an outlet;
a valve member having a passageway defined therein, the valve member having a central portion and a plurality of compartments disposed around the periphery of the central portion;
at least one removable insert having a precision metering orifice, the insert capable of being received in one of the compartments in the valve member; and
,a knob coupled to the valve member such that rotation of the knob causes the valve member to rotate such that the precision metering orifice in the at least one insert is disposed in registry with the outlet. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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Specification