US3292525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective air curtain for cooking area
Assignee: Individual
•
Filing: 1965-09-13
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Granted: 1966-12-20
•
Expires: 1985-09-13
Abstract
No abstract record available.
Inventors
- 👤 Donald D Jensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:19
CPC Classifications
F; F24; F24C; F24C15/00; F24C15/20; F24C15/2028; F24C15/2042; F24F; F24F9/00; Y; Y10; Y10S; Y10S55/00; Y10S55/18; Y10S55/29; Y10S55/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
224 words
A SYSTEM FOR REMOVING AIR-BORNE CONTAMINANTS INCLUDING THE PRODUCTS OF COMBUSTION AND VOLATILIZATION INCIDENT TO COOKING FROM A COOKING AREA LOCATED IN AN AIRCONDITIONED ROOM WITH A MINIMUM OF DISTURBANCE OR DISPLACEMENT OF THE CONDITIONED AIR BY SUCH REMOVAL COMPRISING (A) AIR SUPPLY MEANS INCLUDING A FIRST BLOWER MEANS HAVING AN INTAKE EXTERNALLY OF SAID ROOM FOR DIRECTING A CONFINED AIR STREAM TO THE COOKING AREA, (B) AN AIR DISCHARGE CONNECTED TO THE SUPPLY MEANS AT THE COOKING AREA FOR DISCHARGING THE AIR STREAM INTO THE ROOM ADJACENT TO THE COOKING AREA IN A CURTAIN PROJECTED OVER THE COOKING AREA TO PICK UP SAID CONTAMINANTS AND TO SHIELD THE CONDITIONED AIR OF THE ROOM THEREFROM, AND (E) AIR EXHAUST MEANS, SEPARATE FROM SAID SUPPLY MEANS AND INCLUDING A SECOND BLOWER MEANS HAVING AN AIR RECEIVING INLET DISPOSED ADJACENT TO THE COOKING AREA IN ALIGNMENT WITH THE DISCHARGE TO RECEIVE THE CURTAIN OF AIR AND CONTAMINANTS PICKED UP THEREBY AND AN EXHAUST OUTLET EXTERNALLY OF THE ROOM AND SEPARATE FROM SAID INTAKE FOR RELEASE OF THE AIR STREAM AND SAID CONTAMINANTS, (1) THE AIR SUPPLY MEANS AND THE AIR EXHAUST MEANS BEING SUBSTANTIALLY VOLUMETRICALLY BALANCED SO THAT THE VOLUME OF AIR SUPPLIED IN SAID AIR STREAM TO THE ROOM SUBSTANTIALLY EQUALS THE VOLUME OF AIR AND CONTAMINANTS REMOVED IS SAID AIR STREAM FROM THE ROOM.
Claim 2
Independent Claim
224 words
A SYSTEM FOR REMOVING AIR-BORNE CONTAMINANTS INCLUDING THE PRODUCTS OF COMBUSTION AND VOLATILIZATION INCIDENT TO COOKING FROM A COOKING AREA LOCATED IN AN AIRCONDITIONED ROOM WITH A MINIMUM OF DISTURBANCE OR DISPLACEMENT OF THE CONDITIONED AIR BY SUCH REMOVAL COMPRISING (A) AIR SUPPLY MEANS INCLUDING A FIRST BLOWER MEANS HAVING AN INTAKE EXTERNALLY OF SAID ROOM FOR DIRECTING A CONFINED AIR STREAM TO THE COOKING AREA, (B) AN AIR DISCHARGE CONNECTED TO THE SUPPLY MEANS AT THE COOKING AREA FOR DISCHARGING THE AIR STREAM INTO THE ROOM ADJACENT TO THE COOKING AREA IN A CURTAIN PROJECTED OVER THE COOKING AREA TO PICK UP SAID CONTAMINANTS AND TO SHIELD THE CONDITIONED AIR OF THE ROOM THEREFROM, AND (E) AIR EXHAUST MEANS, SEPARATE FROM SAID SUPPLY MEANS AND INCLUDING A SECOND BLOWER MEANS HAVING AN AIR RECEIVING INLET DISPOSED ADJACENT TO THE COOKING AREA IN ALIGNMENT WITH THE DISCHARGE TO RECEIVE THE CURTAIN OF AIR AND CONTAMINANTS PICKED UP THEREBY AND AN EXHAUST OUTLET EXTERNALLY OF THE ROOM AND SEPARATE FROM SAID INTAKE FOR RELEASE OF THE AIR STREAM AND SAID CONTAMINANTS, (1) THE AIR SUPPLY MEANS AND THE AIR EXHAUST MEANS BEING SUBSTANTIALLY VOLUMETRICALLY BALANCED SO THAT THE VOLUME OF AIR SUPPLIED IN SAID AIR STREAM TO THE ROOM SUBSTANTIALLY EQUALS THE VOLUME OF AIR AND CONTAMINANTS REMOVED IS SAID AIR STREAM FROM THE ROOM.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |