Patent JPS5350894A successfully refreshed from Google Patents.
US3187802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recirculating heat transfer apparatus
Assignee: FMC Corp
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Filing: 1961-01-23
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Granted: 1965-06-08
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Expires: 1981-01-23
Abstract
No abstract record available.
Inventors
- 👤 Frank D Hickey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:13
CPC Classifications
F; F28; F28F; F28F13/00; F28F13/06; F28F13/12; F28F13/125
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
84 words
A METHOD OF HEATING VISCOUS METAL COMPRISING THE STEPS OF VIOLENTLY AGITATING AND DE-AERATING THE MATERIAL AND FORMING IT INTO A VORTEX, MOVING THE VORTEX ALONG A HEATED SURFACE WITH THE MATERIAL IN HEAT-TRANSFER CONTACT WITH THE SURFACE, MOVING THE MATERIAL OUT OF CONTACT WITH SAID SURFACE AND BREAKING UP THE VORTEX TO PERMIT THE PARTICLES OF MATERIAL TO BECOME REORIENTED RELATIVE TO THE SURROUNDING PARTICLES, AND DEAERATING THE MATERIAL AND REFORMING THE VORTEX AND MOVING ITS ALONG SAID HEATED SURFACE IN CONTACT THEREWITH.
Claim 2
Independent Claim
84 words
A METHOD OF HEATING VISCOUS METAL COMPRISING THE STEPS OF VIOLENTLY AGITATING AND DE-AERATING THE MATERIAL AND FORMING IT INTO A VORTEX, MOVING THE VORTEX ALONG A HEATED SURFACE WITH THE MATERIAL IN HEAT-TRANSFER CONTACT WITH THE SURFACE, MOVING THE MATERIAL OUT OF CONTACT WITH SAID SURFACE AND BREAKING UP THE VORTEX TO PERMIT THE PARTICLES OF MATERIAL TO BECOME REORIENTED RELATIVE TO THE SURROUNDING PARTICLES, AND DEAERATING THE MATERIAL AND REFORMING THE VORTEX AND MOVING ITS ALONG SAID HEATED SURFACE IN CONTACT THEREWITH.
Claim 3
Dependent Claim
192 words
IN A HEAT EXCHANGE APPARATUS FOR TREATING VISCOUS MATERIAL, A VESSEL HAVING A MATERIAL OUTLET AND A SIDEWALL PROVIDING A HEAT TRANSFER SURFAE DEFINING A CYLINDRICAL PROCESSING CHAMBER FOR HEATING OR COOLING THE MATERIAL THEREIN, A RECIRCULATION CONDUIT DISPOSED EXTERIORLY OF SAID VESSEL AND LEADING AT ITS INLET END OUT OF THE PROCESSING CHAMBER ADJACENT ONE END AT THE PERIPHERY OF THE CHAMBER AND LEADING AT ITS DISCHARGE END COAXIALLY INTO THE PROCESSING CHAMBER AT THE OPPOSITE END THEREOF, MEANS PROVIDING A MATERIAL INLET LEADING INTO SAID RECIRCULATION CONDUIT, IMPELLER MEANS COMPRISING A PLURALITY OF AXIALLY SPACED DISCS MOUNTED IN THE CHAMBER IN COAXIAL RELATION THERETO FOR ROTATION TO IMPEL MATERIAL FROM WITHIN SAID CONDUIT AT ITS DISCHARGE END AND AGAINST THE SIDE WALL OF THE CHAMBER TO CREATE A LOW PRESSURE AREA IN SAID CONDUIT ADJACENT THE DISCHARGE END TO DRAW MATERIAL THROUGH THE MATERIAL INLET IN SAID CONDUIT AND THROUGH SAID CONDUIT FROM ADJACENT SAID ONE END OF THE PROCESSING CHAMBER FOR THE RETURN OF THE MATERIAL INTO THE PROCESSING CHAMBER AT SAID OPPOSITE END TO RECIRCULATE THE MATERIAL, AND DRIVE MEANS CONNECTED TO SAID IMPELLER TO OPERATE THE SAME.
Claim 4
Dependent Claim
192 words
IN A HEAT EXCHANGE APPARATUS FOR TREATING VISCOUS MATERIAL, A VESSEL HAVING A MATERIAL OUTLET AND A SIDEWALL PROVIDING A HEAT TRANSFER SURFAE DEFINING A CYLINDRICAL PROCESSING CHAMBER FOR HEATING OR COOLING THE MATERIAL THEREIN, A RECIRCULATION CONDUIT DISPOSED EXTERIORLY OF SAID VESSEL AND LEADING AT ITS INLET END OUT OF THE PROCESSING CHAMBER ADJACENT ONE END AT THE PERIPHERY OF THE CHAMBER AND LEADING AT ITS DISCHARGE END COAXIALLY INTO THE PROCESSING CHAMBER AT THE OPPOSITE END THEREOF, MEANS PROVIDING A MATERIAL INLET LEADING INTO SAID RECIRCULATION CONDUIT, IMPELLER MEANS COMPRISING A PLURALITY OF AXIALLY SPACED DISCS MOUNTED IN THE CHAMBER IN COAXIAL RELATION THERETO FOR ROTATION TO IMPEL MATERIAL FROM WITHIN SAID CONDUIT AT ITS DISCHARGE END AND AGAINST THE SIDE WALL OF THE CHAMBER TO CREATE A LOW PRESSURE AREA IN SAID CONDUIT ADJACENT THE DISCHARGE END TO DRAW MATERIAL THROUGH THE MATERIAL INLET IN SAID CONDUIT AND THROUGH SAID CONDUIT FROM ADJACENT SAID ONE END OF THE PROCESSING CHAMBER FOR THE RETURN OF THE MATERIAL INTO THE PROCESSING CHAMBER AT SAID OPPOSITE END TO RECIRCULATE THE MATERIAL, AND DRIVE MEANS CONNECTED TO SAID IMPELLER TO OPERATE THE SAME.
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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) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |