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US 6,484,720 B1Granted
Five spring regulator
AssigneeApplied Marketing, Inc.
InventorsDavid J. Marquard, II, Ronald J. Johnson
Life of this patent
Estimating the term…
Abstract
An oxygen gas therapy regulator is provided which is small in size and has particularly uniform output characteristics. The regulator uses five springs evenly spaced around a circle concentric with the axis of the regulator piston thereby providing uniform output characteristics.
Claims10
An oxygen gas regulator for medical use comprising:
- a regulator body having a gas inlet admitting gas at high pressure;
- an upper chamber receiving gas from said gas inlet;
- a lower chamber;
- a gas outlet receiving gas from said lower chamber;
- a passage from said upper chamber to said lower chamber;
- an atmospheric pressure chamber;
- a movable piston having a bottom surface exposed in said lower chamber and a top surface exposed in said atmospheric pressure chamber;
- a variable orifice controlling flow of gas through said gas inlet, said variable orifice being controlled by said piston;
- and,
- five biasing springs urging said piston toward said lower chamber.
7 more elements
An oxygen gas regulator for medicinal use comprising:
- a regulator body having a gas inlet admitting gas to an upper pressure chamber;
- a lower chamber communicating with said upper chamber having a low pressure gas outlet;
- a piston exposed to said lower chamber, said piston controlling an orifice controlling the flow of gas into said upper chamber;
- and,
- five biasing springs urging said piston toward said lower chamber.
2 more elements
Dependencies are inferred from the claim text.