US3587490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means for inducing draft in a stack
Assignee: Cameron Solutions Inc
•
Filing: 1969-08-15
•
Granted: 1971-06-28
•
Expires: 1989-08-15
Abstract
Abstract A FAN IS ARRANGED IN THE EXHAUST STACK OF A FLUID FUEL BURNING HEATER TO INDUCE DRAFT. THE ENERGY OF A HIGH PRESSURE FUEL LINE IS TAPPED TO POWER A FLUID-DRIVEN MOTOR WHICH IN TURN DRIVES THE FAN. THE FUEL IS THEN BURNED IN THE HEATER. FUEL LINE PRESSURES AND FLOW RATES ARE CONTROLLED AS REQUIRED.
Inventors
- 👤 Bill G Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:54
CPC Classifications
F; F23; F23L; F23L17/00; F23L2700/00; F23L2700/001
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |