Patent US3111722A successfully refreshed from Google Patents.
US3111722A
Expired / Lapsed
US
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Vent duct adapter
Assignee: Individual
•
Filing: 1959-05-20
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Granted: 1963-11-26
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Expires: 1979-05-20
Abstract
No abstract record available.
Inventors
- 👤 William A Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:14
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/02; F24F13/0209
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
IN COMBINATION, A VENT DUCT ADAPTER OF UNITARY CONSTRUCTION, A WALL FRAME INCLUDING A HORIZONTAL MEMBER HAVING AN OMITTED PORTION RECEIVING THE ADAPTER, AND A VENT DUCT, SAID ADAPTER COMPRISING A HORIZONTAL PLATE HAVING AN ENLARGED OPENING RECEIVING THE DUCT THERETHROUGH, DEPENDING SIDE WALLS CONNECTED TO SAID PLATE AND LYING IN THE PLANE OF THE END EDGES OF THE OPENING AND ALONGSIDE THE DUCT, DEPENDING END WALLS CONNECTED TO THE HORIZONTAL PLATE AND LYING IN THE PLANES OF THE ENDS OF THE OPENING WITH THE END WALLS AND SIDE WALLS BEING RIGIDLY INTERCONNECTED TO EACH OTHER AND TO THE HORIZONTAL PLATE THEREBY PROVIDING A UNITARY CONSTRUCTION, SAID SIDE EXTENDING BEYOND THE END WALLS AND COMBINING WITH THE END PORTIONS OF SAID PLATE TO FORM SOCKETS RECEIVING POR-
Claim 2
Dependent Claim
127 words
IN COMBINATION, A VENT DUCT ADAPTER OF UNITARY CONSTRUCTION, A WALL FRAME INCLUDING A HORIZONTAL MEMBER HAVING AN OMITTED PORTION RECEIVING THE ADAPTER, AND A VENT DUCT, SAID ADAPTER COMPRISING A HORIZONTAL PLATE HAVING AN ENLARGED OPENING RECEIVING THE DUCT THERETHROUGH, DEPENDING SIDE WALLS CONNECTED TO SAID PLATE AND LYING IN THE PLANE OF THE END EDGES OF THE OPENING AND ALONGSIDE THE DUCT, DEPENDING END WALLS CONNECTED TO THE HORIZONTAL PLATE AND LYING IN THE PLANES OF THE ENDS OF THE OPENING WITH THE END WALLS AND SIDE WALLS BEING RIGIDLY INTERCONNECTED TO EACH OTHER AND TO THE HORIZONTAL PLATE THEREBY PROVIDING A UNITARY CONSTRUCTION, SAID SIDE EXTENDING BEYOND THE END WALLS AND COMBINING WITH THE END PORTIONS OF SAID PLATE TO FORM SOCKETS RECEIVING POR-
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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) | 1966-11-25 | 1967-05-27 | 1967-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-25 | 1971-05-27 | 1971-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-25 | 1975-05-27 | 1975-11-26 | $7700.00 | Window Closed / Lapsed |