Patent US3372693A successfully refreshed from Google Patents.
US3372693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating systems and railway tank cars incorporating such heating systems
Assignee: General American Transportation Corp
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Filing: 1965-01-22
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Granted: 1968-03-12
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Expires: 1985-01-22
Abstract
No abstract record available.
Inventors
- 👤 Gutzeit Gregoire
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:04
CPC Classifications
B; B65; B65D; B65D88/00; B65D88/74; B65D88/744
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A RAILWAY TANK CAR COMPRISING A MOBILE FRAME, HEATINSULATED TANK STRUCTURE CARRIED BY SAID FRAME AND ADAPTED TO CONTAIN A LIQUID LADING THAT IS TO BE MAINTAINED IN A HOT CONDITION, A HEATING CONDUIT CARRIED BY SAID TANK STRUCTURE AND ARRANGED TO BE IN GOOD HEAT-EXCHANGE REACTION WITH THE LADING CONTAINED THEREIN, A FLAMELESS COMBUSTION HEATER CARRIED BY SAID FRAME AND INCLUDING A POROUS CATALYTIC BED, MEANS CARRIED BY SAID FRAME FOR SUPPLYING A COMBUSTIBLE MIXTURE IN THE GAS PHASE INTO THE CATALYTIC BED OF SAID HEATER, THE CATALYTIC BED OF SAID HEATER BEING CHARACTERIZED BY PRODUCING FLAMELESS CATALYTIC COMBUSTION THEREIN OF THE COMBUSTIBLE MIXTURE SUPPLIED THERETO AND THE CONSEQUENT PRODUCTION AND DISCHARGE THEREFROM OF HOT FLUE GASES, AND MEANS CARRIED BY SAID FRAME FOR
Claim 2
Dependent Claim
125 words
A RAILWAY TANK CAR COMPRISING A MOBILE FRAME, HEATINSULATED TANK STRUCTURE CARRIED BY SAID FRAME AND ADAPTED TO CONTAIN A LIQUID LADING THAT IS TO BE MAINTAINED IN A HOT CONDITION, A HEATING CONDUIT CARRIED BY SAID TANK STRUCTURE AND ARRANGED TO BE IN GOOD HEAT-EXCHANGE REACTION WITH THE LADING CONTAINED THEREIN, A FLAMELESS COMBUSTION HEATER CARRIED BY SAID FRAME AND INCLUDING A POROUS CATALYTIC BED, MEANS CARRIED BY SAID FRAME FOR SUPPLYING A COMBUSTIBLE MIXTURE IN THE GAS PHASE INTO THE CATALYTIC BED OF SAID HEATER, THE CATALYTIC BED OF SAID HEATER BEING CHARACTERIZED BY PRODUCING FLAMELESS CATALYTIC COMBUSTION THEREIN OF THE COMBUSTIBLE MIXTURE SUPPLIED THERETO AND THE CONSEQUENT PRODUCTION AND DISCHARGE THEREFROM OF HOT FLUE GASES, AND MEANS CARRIED BY SAID FRAME FOR
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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) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |