Gas separation: processes – With control responsive to sensed condition – Pressure sensed
Reexamination Certificate
2005-10-25
2008-11-25
Lawrence, Frank M (Department: 1797)
Gas separation: processes
With control responsive to sensed condition
Pressure sensed
C095S096000, C096S121000, C096S116000, C128S204210, C128S204260, C128S205240
Reexamination Certificate
active
07455717
ABSTRACT:
In one aspect, a product gas concentrator is provided. In one embodiment, the apparatus may include: a first process separating adsorbable components from a source gaseous mixture, a second process providing concentrated product gas in a continuous output mode, a third process providing concentrated product gas in a pulsed output mode, and a fourth process selectively switching between the continuous and pulsed output modes. In another embodiment, the apparatus may include: a first process pressurizing a source gaseous mixture, a second process separating adsorbable components from the pressurized gaseous mixture, a product tank accumulating concentrated product gas for dispensing, an output path, a third process selecting a volume to be dispensed during a predetermined time, a pressure sensor monitoring pressure of the concentrated product gas, and a fourth process controlling flow of the concentrated product gas in response to the selected volume and the monitored pressure.
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Calfee Halter & Griswold LLP
Invacare Corporation
Lawrence Frank M
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