US3566866A — Breathing aid administration device

Claim 1

Independent Claim 238 words

A breathing aid administration device comprising a valve casing, a valve chamber in said casing which is closed at one end and opens to a gas delivery duct by way of a valve seating orifice at the other end, means for feeding gas under pressure into said chamber, a liquid reservoir on said casing, a gas bleeder duct through which said delivery duct communicates with the bottom of said reservoir, a gas discharge outlet duct whereof the upper end opens to the top of said reservoir and the lower end is adapted for attachment thereto of an administration element, an opening in said discharge duct which leads to atmosphere, a closure plate able to close said opening, a first loading spring which influences said closure plate to remain in closed position, a valve stem which extends through said chamber and through said discharge duct there to confront said closure plate, a valve closure flange on said stem able to seat on said valve seating, a second loading spring which influences said closure flange to remain in closed position, and means for retracting said closure flange from said valve seating; the arrangement of said valve stem and the respective strengths of said first and second loAding springs being such that when said closure flange is seated on said seating said closure plate is displaced from its closed position by said stem thereby to open said discharge duct to atmosphere.

Claim 2

Dependent Claim 238 words

A breathing aid administration device comprising a valve casing, a valve chamber in said casing which is closed at one end and opens to a gas delivery duct by way of a valve seating orifice at the other end, means for feeding gas under pressure into said chamber, a liquid reservoir on said casing, a gas bleeder duct through which said delivery duct communicates with the bottom of said reservoir, a gas discharge outlet duct whereof the upper end opens to the top of said reservoir and the lower end is adapted for attachment thereto of an administration element, an opening in said discharge duct which leads to atmosphere, a closure plate able to close said opening, a first loading spring which influences said closure plate to remain in closed position, a valve stem which extends through said chamber and through said discharge duct there to confront said closure plate, a valve closure flange on said stem able to seat on said valve seating, a second loading spring which influences said closure flange to remain in closed position, and means for retracting said closure flange from said valve seating; the arrangement of said valve stem and the respective strengths of said first and second loAding springs being such that when said closure flange is seated on said seating said closure plate is displaced from its closed position by said stem thereby to open said discharge duct to atmosphere.

Claim 3

Dependent Claim 33 words

A device according to claim 1 wherein said valve stem has a bypass duct formed in it whereby said delivery duct may be placed in direct communication with said gas discharge outlet duct.

Claim 4

Dependent Claim 40 words

A device according to claim 2 wherein said bypass duct includes a side passage, and said casing has a port-groove formed in it with which said side passage may be brought into register by part rotation of said valve stem.

Claim 5

Dependent Claim 36 words

A device according to claim 1 which includes a closure cap which constitutes a backing for said first loading spring, said cap being part rotatable thereby to vary the loading effect of said first loading spring.

Claim 6

Dependent Claim 139 words

A breathing aid administration device comprising: a valve casing, a valve chamber in said casing which is closed at one end and opens to a gas delivery duct by way of a valve seating orifice at its other end, a closure in said chamber which normally keeps said seating orifice closed, means for connecting the interior of said chamber to a source of gas under pressure, a liquid reservoir on said casing having its bottom communicating with said gas delivery duct, a gas discharge outlet duct having an upper end open to the top of said reservoir and a lower end constructed for attachment thereto of an administration element, manually operable means for moving said closure from said seating orifice, and valve means which opens the outlet duct to atmosphere when said seating orifice is closed by the closure.

Claim 7

Dependent Claim 139 words

A breathing aid administration device comprising: a valve casing, a valve chamber in said casing which is closed at one end and opens to a gas delivery duct by way of a valve seating orifice at its other end, a closure in said chamber which normally keeps said seating orifice closed, means for connecting the interior of said chamber to a source of gas under pressure, a liquid reservoir on said casing having its bottom communicating with said gas delivery duct, a gas discharge outlet duct having an upper end open to the top of said reservoir and a lower end constructed for attachment thereto of an administration element, manually operable means for moving said closure from said seating orifice, and valve means which opens the outlet duct to atmosphere when said seating orifice is closed by the closure.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1974-03-01	1974-08-31	1975-03-02	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1978-03-01	1978-08-31	1979-03-02	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1982-03-01	1982-08-31	1983-03-02	$7700.00	Window Closed / Lapsed

Breathing aid administration device

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