US3289936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Humidification apparatus for forced air heating system
Assignee: Individual
•
Filing: 1965-06-28
•
Granted: 1966-12-06
•
Expires: 1985-06-28
Abstract
No abstract record available.
Inventors
- 👤 Clare W Coburn
- 👤 James H Coburn
- 👤 Clara M Coburn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:08
CPC Classifications
F; F24; F24F; F24F11/00; F24F11/30; F24F11/70; F24F11/72; F24F11/74; F24F11/76; F24F11/80; F24F11/83; F24F11/84; F24F2110/00; F24F2110/20; F24F2140/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
AN APPARATUS FOR CONTROLLING THE HUMIDIFICATION IN A FORCED HOT AIR HEATING SYSTEM INCLUDING A NOZZLE FOR INJECTING WATER INTO SAID SYSTEM AND CONTROL MEANS FOR CONTROLLING THE RATE OF INJECTION; SAID CONTROL MEANS INCLUDING A LIQUID FLOW CONTROL VALVE; AN INTERRUPTER DEVICE FOR OPENING AND CLOSING SAID VALVE AT PREDETERMINED INTERVALS; AND A PRESSURE SENSING DEVICE FOR INTERRUPTING THE SUPPLY OF WATER TO SAID NOZZLE WHEN THE WATER PRESSURE FALLS BELOW A SELECTED MINIMUM VALUE, WHEREIN THE NOZZLE IS POSITIONED TO SPRAY WATER AGAINST THE SIDES OF THE DUCTS OF THE HOT AIR HEATING SYSTEM, AND THE SELECTED MINIMUM VALUE IS
Claim 2
Independent Claim
102 words
AN APPARATUS FOR CONTROLLING THE HUMIDIFICATION IN A FORCED HOT AIR HEATING SYSTEM INCLUDING A NOZZLE FOR INJECTING WATER INTO SAID SYSTEM AND CONTROL MEANS FOR CONTROLLING THE RATE OF INJECTION; SAID CONTROL MEANS INCLUDING A LIQUID FLOW CONTROL VALVE; AN INTERRUPTER DEVICE FOR OPENING AND CLOSING SAID VALVE AT PREDETERMINED INTERVALS; AND A PRESSURE SENSING DEVICE FOR INTERRUPTING THE SUPPLY OF WATER TO SAID NOZZLE WHEN THE WATER PRESSURE FALLS BELOW A SELECTED MINIMUM VALUE, WHEREIN THE NOZZLE IS POSITIONED TO SPRAY WATER AGAINST THE SIDES OF THE DUCTS OF THE HOT AIR HEATING SYSTEM, AND THE SELECTED MINIMUM VALUE IS
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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) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |