Source: https://patents.google.com/patent/US6006748?oq=6%2C250%2C774
Timestamp: 2018-04-24 09:46:22
Document Index: 43002395

Matched Legal Cases: ['art 452033', 'art 302142', 'art 231700', 'art 616329', 'art 616324', 'art 73510', 'art 572004', 'art 572011', 'art 702510', 'art 702020', 'art 73510', 'art 302180']

US6006748A - Vent valve apparatus - Google Patents
Vent valve apparatus Download PDF
US6006748A
US6006748A US08951357 US95135797A US6006748A US 6006748 A US6006748 A US 6006748A US 08951357 US08951357 US 08951357 US 95135797 A US95135797 A US 95135797A US 6006748 A US6006748 A US 6006748A
US08951357
Shane Douglas Hollis
Y10T137/2617—Bypass or relief valve biased open
5. A vent valve apparatus for use with a system for supplying breathable gas pressurized above atmospheric pressure to a human or animal, the apparatus comprising:
a gas washout vent;
a vent valve adapted to progressively restrict the flow area of the washout vent;
a pressure sensitive vent valve control means, including an elastic diaphragm, produced from a rubber or other elastic diaphragm stretched over a circular orifice, connected to the vent valve such that displacement of the diaphragm results in displacement of the vent valve, adapted to progressively cause said vent valve to restrict the flow area of the gas washout vent in response to increases in the pressure of the gas supply, thereby substantially regulating the volumetric flow of gas and or CO2 through the washout vent over a range of gas supply pressures; and
means for connecting the vent valve to the rubber diaphragm to allow for the stroke of the vent valve to be adjusted.
6. An apparatus as claimed in claim 5, wherein the vent valve is attached to the centre of the rubber diaphragm and said connection means is a rod, the rod being operatively connected to both the vent valve and the diaphragm.
11. A vent valve apparatus for use with a system for supplying breathable gas pressurized above atmospheric pressure to a human or animal, the apparatus comprising:
a vent valve adapted to progressively restrict the flow area of the washout vent; and
a pressure sensitive vent valve control means adapted to progressively cause said vent valve to restrict the flow area of the gas washout vent in response to increases in the pressure of the gas supply, said vent valve control means including an aerodynamic member suspended in a branch of the conduit and adapted for rotation about an axis transverse to the branch, thereby substantially regulating the volumetric flow of gas and/or CO2 through the washout vent over a range of gas supply pressures.
12. An apparatus as claimed in claim 11, wherein the member is connected to the vent valve such that as the pressure in the conduit increases the rotational displacement of the aerodynamic member causes corresponding movement of the vent valve, resulting in a reduction of the flow area of the washout vent.
13. A vent valve apparatus for use with a system for supplying breathable gas pressurized above atmospheric pressure to a human or animal, the apparatus comprising:
a pressure sensitive vent valve control means adapted to progressively cause said vent valve to restrict the flow area of the gas washout vent in response to increases in the pressure of the gas supply, said vent valve control means including an aerodynamic member disposed in the air supply conduit by a biased pivot mechanism and having an axis of rotation transverse to the direction of gas flow whereby gas passing through the conduit causes the aerodynamic member to generate lift and to be rotatably displaced in proportion to the velocity of the gas flowing through the conduit thereby substantially regulating the volumetric flow of gas and/or CO2 through the washout vent over a range of gas supply pressures.
14. An apparatus as claimed in claim 13, wherein as the gas velocity increases the aerodynamic member produces increase lift and the resulting rotational displacement is transmitted to the vent valve which restricts the flow area of the washout vent.
US08951357 1996-10-16 1997-10-16 Vent valve apparatus Expired - Lifetime US6006748A (en)
AUPO3017 1996-10-16
AUPO301796 1996-10-16
US09361495 US6557555B1 (en) 1996-10-16 1999-07-26 Vent valve apparatus
US10365397 US6889692B2 (en) 1996-10-16 2003-02-13 Vent valve assembly
US11094174 US7059325B2 (en) 1996-10-16 2005-03-31 Vent assembly
US11404870 US8997739B2 (en) 1996-10-16 2006-04-17 Vent valve apparatus
US14632230 US9770571B2 (en) 1996-10-16 2015-02-26 Vent valve assembly
US09361495 Continuation US6557555B1 (en) 1996-10-16 1999-07-26 Vent valve apparatus
US6006748A true US6006748A (en) 1999-12-28
ID=3797326
US08951357 Expired - Lifetime US6006748A (en) 1996-10-16 1997-10-16 Vent valve apparatus
US09361495 Expired - Lifetime US6557555B1 (en) 1996-10-16 1999-07-26 Vent valve apparatus
US10365397 Expired - Lifetime US6889692B2 (en) 1996-10-16 2003-02-13 Vent valve assembly
US11094174 Expired - Lifetime US7059325B2 (en) 1996-10-16 2005-03-31 Vent assembly
US11404870 Active 2024-12-29 US8997739B2 (en) 1996-10-16 2006-04-17 Vent valve apparatus
US14632230 Active 2018-07-19 US9770571B2 (en) 1996-10-16 2015-02-26 Vent valve assembly
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Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HOLLIS, SHANE DOUGLAS;REEL/FRAME:009190/0098
Free format text: CHANGE OF ASSIGNEE S ADDRESS;ASSIGNOR:RESMED LIMITED;REEL/FRAME:020362/0566
Free format text: CHANGE OF ASSIGNEE S ADDRESS;ASSIGNOR:RESMED LIMITED;REEL/FRAME:020362/0521