US3245399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas heater
Assignee: Individual
•
Filing: 1963-07-24
•
Granted: 1966-04-12
•
Expires: 1983-07-24
Abstract
No abstract record available.
Inventors
- 👤 Maurice O Lawson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:46
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/22; F; F04; F04D; F04D23/00; F04D23/008; F04D29/00; F04D29/40; F04D29/42; F04D29/44; F04D29/46; F04D29/462; F04D29/464; F04D29/58; F04D29/582; F24; F24V; F24V40/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
A GAS HEATER COMPRISING, A HOUSING, A PLURALITY OF ROWS OF SPACED BLADES IN SAID HOUSING ARRANGED IN SPACED FOLLOWING RELATION AND OCCUPYING A GENERALLY COMMON PLANE, MEANS IN SAID HOUSING DEFINING A CONTINUOUS FLOW PATH, A LIMITED PORTION OF WHICH IS OCCUPIED BY SAID SPACED FOLLOWING BLADES, MEANS DEFINING AN INLET OPENING DIRECTLY TO SAID FLOW PATH, MEANS DEFINING LIMITED OUTLET FROM SAID FLOW PATH, ONE ROW OF SAID BLADES HAVING MEANS IN CONNECTION THEREWITH FOR DRIVE THEREOF RELATIVE THE OTHER BLADES TO PRODUCE A CONTINUING RECIRCULATION OF THE GAS IN SAID HOUSING THROUGH SAID FLOW PATH, SAID ONE FLOW OF BLADES BEING ADAPED TO ADD AN ADDITIONAL INCREMENT OF HEAT TO SAID GAS IN EACH PASS THEREBY, SAID OUTLET PROVIDING MEANS FOR A FRACTIONAL DISCHARGE THERETHROUGH OF THE SO HEATED GAS, SAID ONE ROW OF BLADES INFLUENCING A FRACTIONAL INPUT OF GAS TO SAID FLOW PATH BY WAY OF SAID INLET TO MIX WITH RECIRCULATED GAS IN AN AMOUNT WHICH IS SUBSTANTIALLY EQUAL IN PROPORTION TO THAT AMOUNT DISCHARGED THROUGH SAID OUTLET.
Claim 2
Dependent Claim
174 words
A GAS HEATER COMPRISING, A HOUSING, A PLURALITY OF ROWS OF SPACED BLADES IN SAID HOUSING ARRANGED IN SPACED FOLLOWING RELATION AND OCCUPYING A GENERALLY COMMON PLANE, MEANS IN SAID HOUSING DEFINING A CONTINUOUS FLOW PATH, A LIMITED PORTION OF WHICH IS OCCUPIED BY SAID SPACED FOLLOWING BLADES, MEANS DEFINING AN INLET OPENING DIRECTLY TO SAID FLOW PATH, MEANS DEFINING LIMITED OUTLET FROM SAID FLOW PATH, ONE ROW OF SAID BLADES HAVING MEANS IN CONNECTION THEREWITH FOR DRIVE THEREOF RELATIVE THE OTHER BLADES TO PRODUCE A CONTINUING RECIRCULATION OF THE GAS IN SAID HOUSING THROUGH SAID FLOW PATH, SAID ONE FLOW OF BLADES BEING ADAPED TO ADD AN ADDITIONAL INCREMENT OF HEAT TO SAID GAS IN EACH PASS THEREBY, SAID OUTLET PROVIDING MEANS FOR A FRACTIONAL DISCHARGE THERETHROUGH OF THE SO HEATED GAS, SAID ONE ROW OF BLADES INFLUENCING A FRACTIONAL INPUT OF GAS TO SAID FLOW PATH BY WAY OF SAID INLET TO MIX WITH RECIRCULATED GAS IN AN AMOUNT WHICH IS SUBSTANTIALLY EQUAL IN PROPORTION TO THAT AMOUNT DISCHARGED THROUGH SAID OUTLET.
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) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |