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US 2006/0076016 A1Published application
Diaphragm valve for a respirator
AssigneeDräger Medical AG & Co. KGaA
InventorsBrian Hewitt, Piers James
Life of this patent
Estimating the term…
Abstract
A diaphragm valve is provided, in which there is improved sealing of a closing cover (15) against the valve housing (3). The seal includes a cylindrical sealing washer (25), which is connected to the valve housing (3) in one piece and into which a cylindrical wall section (18) of the closing cover (15) can be inserted with press fit.
Claims20
A diaphragm valve for a respirator, the diaphragm valve comprising:
- a valve housing with a valve chamber ending in a valve seat;
- a gas feed line leading in said valve housing;
- a gas outlet line leading out of said valve chamber;
- a valve body spanning over said valve chamber and disposed to close said valve seat and interrupt the flow of gas from the gas feed line into the gas outlet line, said valve body forming a control chamber within said valve housing, separated from said valve chamber;
- a closing cover closing a cylindrical control chamber end of said valve housing, said closing cover having a cylindrical wall section;
- and
- a cylindrical, flexible sealing washer connected with said valve housing in one piece, said cylindrical, flexible sealing washer being provided at a control chamber end of said valve housing, said cylindrical wall section of said closing cover having a wall section portion inserted into said sealing washer with a press fit.
4 more elements
A diaphragm valve for a respirator, the diaphragm valve comprising:
- a valve housing with a valve chamber having a valve seat;
- a gas feed line leading in said valve housing;
- a gas outlet line leading out of said valve chamber;
- a valve body disposed to close said valve seat and interrupt the flow of gas from the gas feed line into the gas outlet line, said valve body forming a control chamber within said valve housing, separated from said valve chamber;
- a closing cover closing a cylindrical control chamber end of said valve housing, said closing cover having a cylindrical wall section;
- and
- a sealing washer connected with said valve housing in one piece, said sealing washer being provided at a control chamber end of said valve housing, said cylindrical wall section of said closing cover being inserted into said sealing washer and held in place thereat.
4 more elements
A process for forming a diaphragm valve for a respirator, the process comprising:
- providing a valve housing with a valve chamber ending in a valve seat, a gas feed line leading in said valve housing, a gas outlet line leading out of said valve chamber;
- forming the provided valve housing in one piece with a cylindrical flexible sealing washer at a control chamber end of said valve housing;
- positioning a valve body spanning over said valve chamber and disposed to close said valve seat and interrupt the flow of gas from the gas feed line into the gas outlet line, said valve body forming a control chamber within said valve housing, separated from said valve chamber;
- providing a closing cover closing a cylindrical control chamber end of said valve housing, said closing cover having a cylindrical wall section;
- and
- inserting said cylindrical wall section of said closing cover into said sealing washer and retaining said cylindrical wall section in contact with an inner surface of said sealing washer.
3 more elements
Dependencies are inferred from the claim text.