Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Reexamination Certificate
2005-01-04
2005-01-04
Bennett, Henry (Department: 3743)
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
C128S205240
Reexamination Certificate
active
06837245
ABSTRACT:
Control valve (10) for a user-donnable breathing device selectively switches from a normal breathing oxygen source to a pressurized emergency bottle. A valve body (12) has a normal oxygen source inlet and also an emergency source inlet for oxygen flow to the user of the device when donned. A poppet (30) permits normal source oxygen flow into the valve body (12), normally keeping a piston (32) in a spring-biased cocked position spaced from a seal of the emergency bottle. A user-operated release permits the poppet to move to a position for blocking the normal source inlet but allowing the piston to become uncocked and so be driven by spring force to pierce the emergency bottle seal. Only emergency breathing oxygen from the bottle then flows to the user for emergency breathing. The device can be an escape hood for an aircraft passenger.
REFERENCES:
patent: 3762407 (1973-10-01), Shonerd
patent: 3776227 (1973-12-01), Pitesky et al.
patent: 3976063 (1976-08-01), Henneman et al.
patent: 4083187 (1978-04-01), Nagashima
patent: 4365628 (1982-12-01), Hodel
patent: 4887591 (1989-12-01), Okumura
patent: 5488946 (1996-02-01), Calhoun et al.
patent: 6155258 (2000-12-01), Voege
patent: 6247471 (2001-06-01), Bower et al.
patent: 6260570 (2001-07-01), Wass et al.
Matheny Kim I.
Pinkston Steve R.
Bennett Henry
Essex Manufacturing Company
Gilster Peter S.
Greensfelder, Hemker & Cale, P.C.
Patel Mital
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