US3348466A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vertical blade louver
Assignee: AIROLITE Co
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Filing: 1964-10-16
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Granted: 1967-10-24
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Expires: 1984-10-16
Abstract
No abstract record available.
Inventors
- 👤 Robert W Lane
- 👤 Earl F Mathers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:18
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/08; F24F13/082
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
195 words
IN AN AIR VENTILATING LOUVER HAVING UPPER AND LOWER BLADE SUPPORTING MEMBERS AND A FRONT SILL PLATE, (A) A PLURALITY OF VERTICALLY EXTENDING BLADES MOUNTED BETWEEN SAID SUPPORTING MEMBERS IN SPACED PARALLEL RELATION, SAID BLADES BEING IN SUBSTANTIALLY ZSHAPED CROSS-SECTION AND ORIENTED SO AS TO DEFINE: (1) A SERIES OF AIR INLET PASSAGES EACH OF WHICH ARE DISPOSED AT AN ACUTE ANGLE WITH REFERENCE TO THE PLANE OF SAID SILL PLATE, (2) A CORRESPONDING SERIES OF AIR OUTLET PASSAGES EACH OF WHICH IS DISPOSED AT AN ACUTE ANGLE WITH REFERENCE TO THE PLANE OF SAID SILL PLATE AND WHICH ARE IN SUBSTANTIALLY PARALLEL SPACED RELATION WITH RESPECT TO SAID INLET PASSAGES, (3) A SERIES OF AIR TRANSFER PASSAGES IN INTERCONNECTING COMMUNICATION WITH CORRESPONDING PAIRS OF SAID INLET AND OUTLET PASSAGES, SAID TRANSFER PASSAGES DISPOSED IN A DIRECTION SUBSTANTIALLY PERPENDICULAR TO THE DIRETION OF SAID INLET AND OUTLET PASSAGES AND BEING ADAPTED TO INDUCE TURBULENCE IN THE AIR PASSING THROUGH SAID LOUVER; (B) A PLURALITY OF VERTICALLY EXTENDING INLET STOPS MOUNTED ON EACH OF SAID BLADES BEING ADAPTED TO RESTRICT THE AIR ENTERING SAID INLET PASSAGES AND TO FACILITATE THE REMOVAL OF WATER THEREFROM, SAID INLET
Claim 2
Dependent Claim
195 words
IN AN AIR VENTILATING LOUVER HAVING UPPER AND LOWER BLADE SUPPORTING MEMBERS AND A FRONT SILL PLATE, (A) A PLURALITY OF VERTICALLY EXTENDING BLADES MOUNTED BETWEEN SAID SUPPORTING MEMBERS IN SPACED PARALLEL RELATION, SAID BLADES BEING IN SUBSTANTIALLY ZSHAPED CROSS-SECTION AND ORIENTED SO AS TO DEFINE: (1) A SERIES OF AIR INLET PASSAGES EACH OF WHICH ARE DISPOSED AT AN ACUTE ANGLE WITH REFERENCE TO THE PLANE OF SAID SILL PLATE, (2) A CORRESPONDING SERIES OF AIR OUTLET PASSAGES EACH OF WHICH IS DISPOSED AT AN ACUTE ANGLE WITH REFERENCE TO THE PLANE OF SAID SILL PLATE AND WHICH ARE IN SUBSTANTIALLY PARALLEL SPACED RELATION WITH RESPECT TO SAID INLET PASSAGES, (3) A SERIES OF AIR TRANSFER PASSAGES IN INTERCONNECTING COMMUNICATION WITH CORRESPONDING PAIRS OF SAID INLET AND OUTLET PASSAGES, SAID TRANSFER PASSAGES DISPOSED IN A DIRECTION SUBSTANTIALLY PERPENDICULAR TO THE DIRETION OF SAID INLET AND OUTLET PASSAGES AND BEING ADAPTED TO INDUCE TURBULENCE IN THE AIR PASSING THROUGH SAID LOUVER; (B) A PLURALITY OF VERTICALLY EXTENDING INLET STOPS MOUNTED ON EACH OF SAID BLADES BEING ADAPTED TO RESTRICT THE AIR ENTERING SAID INLET PASSAGES AND TO FACILITATE THE REMOVAL OF WATER THEREFROM, SAID INLET
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) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |