US3320868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Outlet grill for air ducts
Assignee: Individual
•
Filing: 1965-05-17
•
Granted: 1967-05-23
•
Expires: 1985-05-17
Abstract
No abstract record available.
Inventors
- 👤 Apouchtine Dimitri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:03
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/02; F24F13/06; F24F13/075
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A DISTRIBUTION GRILL FOR AIR DUCTS COMPRISING A HOUSING DEFINING AN AIR OUTLET TO SAID DUCT, THE SAID HOUSING HAVING A FRONT U SHAPED FRAME, AN INNER LOUVRED CORE AND AN OUTER LOUVRED CORE, THE LOUVRES OF ONE CORE BEING DISPOSED IN PLANES AT RIGHT ANGLES TO THE PLANE OF THE LOUVRES IN THE OTHER OF SAID CORES, THE SAID INNER AND OUTER CORES HAVE LOWER SIDE PORTIONS THEREOF CUT AT AN ANGLE AND THE SAID U SHAPED FRAME HAS UPPER SIDE PORTIONS CUT AT AN ANGLE COMPLEMENTARY TO THE ANGLE CUT OF THE SAID CORES PERMITTING THE SAID CORES TO BE WITHDRAWN FROM THE SAID U SHAPED FRAME AT APPROXIMATELY HALF THE VERTICAL HEIGHT THEREOF, THE SAID CORES ADAPTED TO BE POSITIONED IN FACE TO FACE RELATIONSHIP WITHIN THE SAID HOUSING AND BEING INDIVIDUALLY INSERTABLE AND WITHDRAWABLE FROM THE SAID HOUSING THROUGH THE OPEN END PORTION OF THE SAID U SHAPED FRAME.
Claim 2
Dependent Claim
153 words
A DISTRIBUTION GRILL FOR AIR DUCTS COMPRISING A HOUSING DEFINING AN AIR OUTLET TO SAID DUCT, THE SAID HOUSING HAVING A FRONT U SHAPED FRAME, AN INNER LOUVRED CORE AND AN OUTER LOUVRED CORE, THE LOUVRES OF ONE CORE BEING DISPOSED IN PLANES AT RIGHT ANGLES TO THE PLANE OF THE LOUVRES IN THE OTHER OF SAID CORES, THE SAID INNER AND OUTER CORES HAVE LOWER SIDE PORTIONS THEREOF CUT AT AN ANGLE AND THE SAID U SHAPED FRAME HAS UPPER SIDE PORTIONS CUT AT AN ANGLE COMPLEMENTARY TO THE ANGLE CUT OF THE SAID CORES PERMITTING THE SAID CORES TO BE WITHDRAWN FROM THE SAID U SHAPED FRAME AT APPROXIMATELY HALF THE VERTICAL HEIGHT THEREOF, THE SAID CORES ADAPTED TO BE POSITIONED IN FACE TO FACE RELATIONSHIP WITHIN THE SAID HOUSING AND BEING INDIVIDUALLY INSERTABLE AND WITHDRAWABLE FROM THE SAID HOUSING THROUGH THE OPEN END PORTION OF THE SAID U SHAPED FRAME.
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) | 1970-05-22 | 1970-11-21 | 1971-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-22 | 1974-11-21 | 1975-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-22 | 1978-11-21 | 1979-05-23 | $7700.00 | Window Closed / Lapsed |