US3297019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas heaters
Assignee: Individual
•
Filing: 1966-02-10
•
Granted: 1967-01-10
•
Expires: 1986-02-10
Abstract
No abstract record available.
Inventors
- 👤 Maurice O Lawson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:48
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A GAS HEATER INCLUDING A HOUSING HAVING MEANS DEFINING THEREIN A CONTINUOUS FLOW PATH, AN INLET TO SAID FLOW PATH AND AN OUTLET THEREFROM, SAID HEATER COMPRISING A ROTOR THE VANES OF WHICH ARE DRIVEN THROUGH A PORTION OF SAID FLOW PATH AND STATOR VANES POSITIONED IN SAID FLOW PATH RELATIVELY ADJACENT SAID OUTLET, SAID OUTLET PROVIDING FOR A LIMITED DISCHARGE OF GAS FROM SAID FLOW PATH FRACTIONALLY RELATED TO THE GAS DRIVEN IN RECIRCULATING FASHION THROUGH SAID FLOW PATH BY SAID ROTOR VANES, THE ROTOR ADDING AN INCREMENT OF HEAT TO THE RECIRCULATING GAS IN EACH CYCLE THEREBY, THE VANES OF SAID ROTOR EXTENDING RADIALLY, GENERALLY CO-PLANAR WITH ITS HUB PORTION, AND SAID STATOR VANES BEING ARRANGED TO INFLU-
Claim 2
Dependent Claim
120 words
A GAS HEATER INCLUDING A HOUSING HAVING MEANS DEFINING THEREIN A CONTINUOUS FLOW PATH, AN INLET TO SAID FLOW PATH AND AN OUTLET THEREFROM, SAID HEATER COMPRISING A ROTOR THE VANES OF WHICH ARE DRIVEN THROUGH A PORTION OF SAID FLOW PATH AND STATOR VANES POSITIONED IN SAID FLOW PATH RELATIVELY ADJACENT SAID OUTLET, SAID OUTLET PROVIDING FOR A LIMITED DISCHARGE OF GAS FROM SAID FLOW PATH FRACTIONALLY RELATED TO THE GAS DRIVEN IN RECIRCULATING FASHION THROUGH SAID FLOW PATH BY SAID ROTOR VANES, THE ROTOR ADDING AN INCREMENT OF HEAT TO THE RECIRCULATING GAS IN EACH CYCLE THEREBY, THE VANES OF SAID ROTOR EXTENDING RADIALLY, GENERALLY CO-PLANAR WITH ITS HUB PORTION, AND SAID STATOR VANES BEING ARRANGED TO INFLU-
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) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |