Gas dispensing and recovery apparatus

Details Gas dispensing and recovery apparatus Gas dispensing and recovery apparatus

2003-05-01

2008-10-07

Lawrence, Frank M (Department: 1797)

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

C128S205150, C222S105000, C222S389000

Reexamination Certificate

active

07431033

ABSTRACT:
A container (1) having a first compartment (3) and a second compartment (5) separated by a movable gas impermeable partition (7) is used for storing and dispensing a gas for use in a process and receiving and storing a gas recovered from the process. Fresh gas is dispensed (9) from the first compartment (3) for use in a process and recovered gas is fed (11) to the second compartment (5), whereby a volume of the second gas displaces a volume of the first gas by movement of the partition (7) to enlarge the second compartment (5) relative to the first compartment (3).

REFERENCES:
patent: 4636226 (1987-01-01), Canfora
patent: 4869733 (1989-09-01), Stanford
patent: 5622282 (1997-04-01), Yazawa et al.
patent: 6213120 (2001-04-01), Block et al.
patent: 6990979 (2006-01-01), Koch
patent: 10021289 (2001-11-01), None
patent: 769304 (1997-04-01), None
patent: 1041337 (2000-10-01), None

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