US3350994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air curtain, ventilating system and air pump therefor
Assignee: COLMAN ROBERT
•
Filing: 1965-10-23
•
Granted: 1967-11-07
•
Expires: 1985-10-23
Abstract
No abstract record available.
Inventors
- 👤 Guibert Raul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:40
CPC Classifications
F; F24; F24F; F24F9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A METHOD FOR FORMING AN AIR CURTAIN IN AN OPENING IN A STRUCTURE BY PROVIDING A TRANSVERSE, HIGH VELOCITY JET OF AIR FROM ONE SIDE OF THE OPENING TO THE OTHER SIDE, COLLECTING IN A CASING A LARGE VOLUME OF SAID THROUGH A RELATIVELY LARGE OPENING EXTENDING UNINTERRUPTEDLY THROUGHOUT SUBSTANTIALLY THE ENTIRE HEIGHT OF THE CASING STRUCTURE OPENING AT THE OPPOSITE SIDE THEREOF, MOVING SAID LARGE VOLUME OF AIR BY AN AIR PUMP INSIDE THE CASING AND HAVING ARMS EXTENDING CONTINUOUSLY THROUGHOUT SUBSTANTIALLY THE LENGTH OF THE CASING, COMPRESSING THE VOLUME OF AIR, AND PASSING SAID COMPRESSED AIR AT HIGH JET VELOCITY THROUGH A RELATIVELY NARROW OPENING EXTENDING INTERRUPTEDLY THROUGHOUT THE ENTIRE HEIGHT OF THE CASING AND STRUCTURE OPENING TOWARD SAID OPPOSITE SIDE OF THE STRUCTURE IN A SEPARATE PATH SPACED FROM, BUT SUBSTANTIALLY PARALLEL TO, A PATH TAKEN BY THE INCOMING AIR TO SAID RELATIVELY LARGE OPENING.
Claim 2
Independent Claim
148 words
A METHOD FOR FORMING AN AIR CURTAIN IN AN OPENING IN A STRUCTURE BY PROVIDING A TRANSVERSE, HIGH VELOCITY JET OF AIR FROM ONE SIDE OF THE OPENING TO THE OTHER SIDE, COLLECTING IN A CASING A LARGE VOLUME OF SAID THROUGH A RELATIVELY LARGE OPENING EXTENDING UNINTERRUPTEDLY THROUGHOUT SUBSTANTIALLY THE ENTIRE HEIGHT OF THE CASING STRUCTURE OPENING AT THE OPPOSITE SIDE THEREOF, MOVING SAID LARGE VOLUME OF AIR BY AN AIR PUMP INSIDE THE CASING AND HAVING ARMS EXTENDING CONTINUOUSLY THROUGHOUT SUBSTANTIALLY THE LENGTH OF THE CASING, COMPRESSING THE VOLUME OF AIR, AND PASSING SAID COMPRESSED AIR AT HIGH JET VELOCITY THROUGH A RELATIVELY NARROW OPENING EXTENDING INTERRUPTEDLY THROUGHOUT THE ENTIRE HEIGHT OF THE CASING AND STRUCTURE OPENING TOWARD SAID OPPOSITE SIDE OF THE STRUCTURE IN A SEPARATE PATH SPACED FROM, BUT SUBSTANTIALLY PARALLEL TO, A PATH TAKEN BY THE INCOMING AIR TO SAID RELATIVELY LARGE OPENING.
References Cited (Backward Citations)
US862162A
Cited
US1095499A
Cited
US2604853A
Cited
GB677674A
Cited
US2616615A
Cited
US3080824A
Cited
US3282193A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |