Patent US3211078A successfully refreshed from Google Patents.
US3211078A
Expired / Lapsed
US
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Air curtain
Assignee: Individual
•
Filing: 1963-06-06
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Granted: 1965-10-12
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Expires: 1983-06-06
Abstract
No abstract record available.
Inventors
- 👤 Gunnar C F Asker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:28
CPC Classifications
F; F24; F24F; F24F9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
AIR CURTAIN DEVICE ADAPTED FOR MOUNTING ABOVE AN OPENING IN A WALL AND PROJECTING A CURTAIN OF AIR DOWNWARDLY AGAINST SAID OPENING, SAID DEVICE COMPRISING AN ELONGATED PLENUM EXTENDING ENTIRELY ACROSS THE OPENING NEAR SAID WALL EDGE, PARTITIONIN MEANS DIVIDING SAID PLENUM INTO INDIVIDUAL ELONGATED CHAMBERS, AN ELONGATEDLY PARTITIONED NOZZLE MOVABLY JOINED TO THE LOWER END OF SAID PARTITIONED PLENUMS WITH EACH OUTLET PORTION OF SAID PARTITIONED NOZZLE COMMUNICATION WITH ONE OF SAID PARTITIONED PLENUMS, AND MEANS FOR ADJUSTING THE OUTLET ANGLE OF SAID NOZZLE WITH RESPECT TO THE PLANE OF SAID WALLS OPENING, BLOWER MEANS CONNECTED TO THE OUTER PLENUM AND
Claim 2
Dependent Claim
102 words
AIR CURTAIN DEVICE ADAPTED FOR MOUNTING ABOVE AN OPENING IN A WALL AND PROJECTING A CURTAIN OF AIR DOWNWARDLY AGAINST SAID OPENING, SAID DEVICE COMPRISING AN ELONGATED PLENUM EXTENDING ENTIRELY ACROSS THE OPENING NEAR SAID WALL EDGE, PARTITIONIN MEANS DIVIDING SAID PLENUM INTO INDIVIDUAL ELONGATED CHAMBERS, AN ELONGATEDLY PARTITIONED NOZZLE MOVABLY JOINED TO THE LOWER END OF SAID PARTITIONED PLENUMS WITH EACH OUTLET PORTION OF SAID PARTITIONED NOZZLE COMMUNICATION WITH ONE OF SAID PARTITIONED PLENUMS, AND MEANS FOR ADJUSTING THE OUTLET ANGLE OF SAID NOZZLE WITH RESPECT TO THE PLANE OF SAID WALLS OPENING, BLOWER MEANS CONNECTED TO THE OUTER PLENUM AND
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |