US3211079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vent cap for gas heating structure
Assignee: Individual
•
Filing: 1964-06-25
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Granted: 1965-10-12
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Expires: 1984-06-25
Abstract
No abstract record available.
Inventors
- 👤 Richard E Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 00:51
CPC Classifications
F; F24; F24H; F24H3/00; F24H3/006; F24H9/00; F24H9/0052
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
IN A HEATER VENT CAP TO BE DISPOSED HORIZONTALLY ABOVE A ROOF: A RAIN AND WIND EXCLUDING RING IN HORIZONTAL DISPOSITION AND ARRANGED ABOUT A VERTICAL AXIS; AN UPWARDLY TAPERING DISC CAP SECURED WITHIN SAID RING IN SPACED RELATKON FROM SAID RING RADIALLY TO PROVIDE A SUBSTANTIALLY ANNULAR VENTING SPACE, THE TOP OF SAID RING LYING ABOVE SAID DISC CAP; AN ANNULAR PLATE ABOVE IN SPACED RELATION BELOW SAID CAP TO PROVIDE BETWEEN THE PLATE AND CAP A HORIZONTAL VENTING SPACE FOR COMBUSTION GASES LEADING TO SAID ANNULAR VENTING SPACE, SAID PLATE ALSO BEING SPACED RADIALLY FROM SAID RING TO YIELD A SUBSTANTIALLY ANNULAR DRAFT SPACE THEREAROUND; A POSITIONING SLEEVE SECURED ABOUTA CENTRAL OPENING IN SAID PLATE AND EXTENIDNG DOWNWARD TO RECEIVE A VENT PIPE; A MOUNTING COLLAR ATTACHED TO AID PLATE IN SPACED RELATION AROUND SAID SLEEVE TO PROVIDE A DOWN-DRAFT COLD AIR PASSAGE BETWEEN SAID SLEEVE AND SAID COLLAR; AND MEANS MOUNTING SAID PLATE IN SPACED RELATION ABOVE THE TOP OF SAID COLLAR OF ADMISSION OF COLD AIR TO SAID PASSAGE.
Claim 2
Dependent Claim
173 words
IN A HEATER VENT CAP TO BE DISPOSED HORIZONTALLY ABOVE A ROOF: A RAIN AND WIND EXCLUDING RING IN HORIZONTAL DISPOSITION AND ARRANGED ABOUT A VERTICAL AXIS; AN UPWARDLY TAPERING DISC CAP SECURED WITHIN SAID RING IN SPACED RELATKON FROM SAID RING RADIALLY TO PROVIDE A SUBSTANTIALLY ANNULAR VENTING SPACE, THE TOP OF SAID RING LYING ABOVE SAID DISC CAP; AN ANNULAR PLATE ABOVE IN SPACED RELATION BELOW SAID CAP TO PROVIDE BETWEEN THE PLATE AND CAP A HORIZONTAL VENTING SPACE FOR COMBUSTION GASES LEADING TO SAID ANNULAR VENTING SPACE, SAID PLATE ALSO BEING SPACED RADIALLY FROM SAID RING TO YIELD A SUBSTANTIALLY ANNULAR DRAFT SPACE THEREAROUND; A POSITIONING SLEEVE SECURED ABOUTA CENTRAL OPENING IN SAID PLATE AND EXTENIDNG DOWNWARD TO RECEIVE A VENT PIPE; A MOUNTING COLLAR ATTACHED TO AID PLATE IN SPACED RELATION AROUND SAID SLEEVE TO PROVIDE A DOWN-DRAFT COLD AIR PASSAGE BETWEEN SAID SLEEVE AND SAID COLLAR; AND MEANS MOUNTING SAID PLATE IN SPACED RELATION ABOVE THE TOP OF SAID COLLAR OF ADMISSION OF COLD AIR TO SAID PASSAGE.
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) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |