US3359883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating duct attachment
Assignee: Individual
•
Filing: 1965-08-26
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Granted: 1967-12-26
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Expires: 1985-08-26
Abstract
No abstract record available.
Inventors
- 👤 Robert A Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:58
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/02; F24F13/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
187 words
A READILY REMOVABLE ATTACHMENT FOR FORCED AIR VENTS WHICH ARE SITUATED IN A PARTITION AND WHICH ARE NORMALLY TERMINATED IN A COVER OF REGISTER, SAID ATTACHMENT COMPRISING A GENERALLY BOXLIKE RECEIVER HAVING TWO ADJACENT SIDES OPEN, ONE OF SAID OPEN SIDES BEING ARRANGED TO FIT OVER A VENT, FLANGES ON AT LEAST ONE EDGE OF SAID RECEIVER FOR ATTACHING SAID RECEIVER TO THE SURFACE IN WHICH SAID VENT IS FORMED, SAID FLANGES BEING FORMED SUCH THAT SAID ATTACHMENT MAY BE SUBSTITUTED FOR SAID VENT COVER OR REGISTER WITHOUT STRUCTURAL MODIFICATION OF SAID VENT OR THE SURROUNDING PARTITION, A DUCT PORTION CONNECTED AT ONE END TO THE OTHER OPEN SIDE OF SAID RECEIVER FOR CONDUCTING AIR FORCED FROM SAID VENT INTO SAID RECEIVER GENERALLY PARALLEL TO SAID PARTITION AND BEHIND AN OBSTRUCTION TO SAID VENT, AND A DISCHARGE PORTION CONNECTED AT ONE END TO THE OTHER END OF SAID DUCT PORTION, THE AXIS OF SAID DISCHARGE PORTION BEING AT AN ACUATE ANGLE TO THE AXIS OF SAID DUCT PORTION TO DISCHARGE AIR AROUND SAID OBSTRUCTION AND IN THE SAME GENERAL DIRECTION AS THE AIR FLOW FROM SAID VENT.
Claim 2
Dependent Claim
187 words
A READILY REMOVABLE ATTACHMENT FOR FORCED AIR VENTS WHICH ARE SITUATED IN A PARTITION AND WHICH ARE NORMALLY TERMINATED IN A COVER OF REGISTER, SAID ATTACHMENT COMPRISING A GENERALLY BOXLIKE RECEIVER HAVING TWO ADJACENT SIDES OPEN, ONE OF SAID OPEN SIDES BEING ARRANGED TO FIT OVER A VENT, FLANGES ON AT LEAST ONE EDGE OF SAID RECEIVER FOR ATTACHING SAID RECEIVER TO THE SURFACE IN WHICH SAID VENT IS FORMED, SAID FLANGES BEING FORMED SUCH THAT SAID ATTACHMENT MAY BE SUBSTITUTED FOR SAID VENT COVER OR REGISTER WITHOUT STRUCTURAL MODIFICATION OF SAID VENT OR THE SURROUNDING PARTITION, A DUCT PORTION CONNECTED AT ONE END TO THE OTHER OPEN SIDE OF SAID RECEIVER FOR CONDUCTING AIR FORCED FROM SAID VENT INTO SAID RECEIVER GENERALLY PARALLEL TO SAID PARTITION AND BEHIND AN OBSTRUCTION TO SAID VENT, AND A DISCHARGE PORTION CONNECTED AT ONE END TO THE OTHER END OF SAID DUCT PORTION, THE AXIS OF SAID DISCHARGE PORTION BEING AT AN ACUATE ANGLE TO THE AXIS OF SAID DUCT PORTION TO DISCHARGE AIR AROUND SAID OBSTRUCTION AND IN THE SAME GENERAL DIRECTION AS THE AIR FLOW FROM SAID VENT.
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) | 1970-12-25 | 1971-06-26 | 1971-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-25 | 1975-06-26 | 1975-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-25 | 1979-06-26 | 1979-12-26 | $7700.00 | Window Closed / Lapsed |