US5129924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supplemental oxygen ventilator
Assignee: Individual
•
Filing: 1989-12-29
•
Granted: 1992-07-14
•
Expires: 2009-12-29
Abstract
Abstract A method and apparatus for supplying oxygen enriched air to interior space from the atmosphere, consisting of an air pump that is arranged to blow air thru an oxygen concentrator that discharges oxygen enriched air to an interior duct, while it returns excess nitrogen to the atmosphere.
Inventors
- 👤 Jerald Schultz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:59
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/22
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
113 words
An apparatus that can take in air from the atmosphere, discard some of the nitrogen content of the air and discharge air that contains a substantially higher proportion of oxygen then is normally found in the atmosphere, comprising; an oxygen concentrator having an inlet port in communication with the atmosphere and a discharge port, an electric motor driven air pump integrally connected to the inlet port of said oxygen concentrator for forcing air thereinto, said oxygen concentrator being a chamber or duct made of a material permeable to nitrogen but not to oxygen, an adjustable orifice valve is provided before the discharge port, whereby oxygen enriched air is discharged from the discharge port.
Claim 2
Independent Claim
113 words
An apparatus that can take in air from the atmosphere, discard some of the nitrogen content of the air and discharge air that contains a substantially higher proportion of oxygen then is normally found in the atmosphere, comprising; an oxygen concentrator having an inlet port in communication with the atmosphere and a discharge port, an electric motor driven air pump integrally connected to the inlet port of said oxygen concentrator for forcing air thereinto, said oxygen concentrator being a chamber or duct made of a material permeable to nitrogen but not to oxygen, an adjustable orifice valve is provided before the discharge port, whereby oxygen enriched air is discharged from the discharge port.
Claim 3
Dependent Claim
13 words
The apparatus in accordance to claim 1, wherein said material is unglazed porcelain.
References Cited (Backward Citations)
US1685759A
Cited
US2597907A
Cited
US2958391A
Cited
US2966235A
Cited
US3499265A
Cited
US3486301A
Cited
US3817232A
Cited
US4174955A
Cited
US4406673A
Cited
US4537606A
Cited
US4553988A
Cited
US4789388A
Cited
US4704139A
Cited
US4950315A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-07-14 | 1996-01-13 | 1996-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-07-14 | 2000-01-13 | 2000-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-07-14 | 2004-01-13 | 2004-07-14 | $7700.00 | Window Closed / Lapsed |