Patent US3281573A successfully refreshed from Google Patents.
US3281573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating system for asphalt equipment
Assignee: HYNES ELECTRIC HEATING Co
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Filing: 1964-02-25
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Granted: 1966-10-25
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Expires: 1984-02-25
Abstract
No abstract record available.
Inventors
- 👤 Lee P Hynes
- 👤 Jr George L Koester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:30
CPC Classifications
B; B65; B65D; B65D88/00; B65D88/74; B65D88/744
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A HEATER SYSTEM FOR HEATING LIQUID MATERIAL IN A TANK AND AUXILIARY EQUIPMENT EXTERNAL TO THE TANK COMPRISING, FIRST MEANS FOR HEATING LIQUID IN THE TANK, SECOND MEANS SUBMERGED IN THE LIQUID WITHIN THE TANK INCLUDING A HEAT TRANSFER FLUID, A JACKET CONTAINING THE HEAT TRANSFER FLUID, AN ELECTRIC HEATER SELECTIVELY ENERGIZED IN ASSOCIATION WITH THE JACKET, MEANS FOR PASSING THE HEAT TRANSFER FLUID THROUGH THE JACKET TO THE EXTERNAL EQUIPMENT, AND CONTROL MEANS FOR SELECTIVELY ENERGIZING THE ELECTRIC HEATER WHEN THE TEMPERATURE OF THE MATERIAL IN THE TANK FALLS BELOW A FIRST GIVEN TEMPERATURE AND FOR SELECTIVELY DEENERGIZING THE ELECTRIC HEATER WHEN THE MATERIAL IN THE TANK RISES ABOVE A SECOND GIVEN TEMPERATURE, WHEREBY HEAT IS TRANSFERRED FROM THE TANK MATERIAL TO THE EXTERNAL EQUIPMENT WHEN THE ELECTRIC HEATER IS DEENERGIZED AND HEAT IS IMPARTED TO THE TANK MATERIAL FROM THE ELECTRIC HEATER WHEN THE ELECTRIC HEATER IS ENERGIZED.
Claim 2
Dependent Claim
150 words
A HEATER SYSTEM FOR HEATING LIQUID MATERIAL IN A TANK AND AUXILIARY EQUIPMENT EXTERNAL TO THE TANK COMPRISING, FIRST MEANS FOR HEATING LIQUID IN THE TANK, SECOND MEANS SUBMERGED IN THE LIQUID WITHIN THE TANK INCLUDING A HEAT TRANSFER FLUID, A JACKET CONTAINING THE HEAT TRANSFER FLUID, AN ELECTRIC HEATER SELECTIVELY ENERGIZED IN ASSOCIATION WITH THE JACKET, MEANS FOR PASSING THE HEAT TRANSFER FLUID THROUGH THE JACKET TO THE EXTERNAL EQUIPMENT, AND CONTROL MEANS FOR SELECTIVELY ENERGIZING THE ELECTRIC HEATER WHEN THE TEMPERATURE OF THE MATERIAL IN THE TANK FALLS BELOW A FIRST GIVEN TEMPERATURE AND FOR SELECTIVELY DEENERGIZING THE ELECTRIC HEATER WHEN THE MATERIAL IN THE TANK RISES ABOVE A SECOND GIVEN TEMPERATURE, WHEREBY HEAT IS TRANSFERRED FROM THE TANK MATERIAL TO THE EXTERNAL EQUIPMENT WHEN THE ELECTRIC HEATER IS DEENERGIZED AND HEAT IS IMPARTED TO THE TANK MATERIAL FROM THE ELECTRIC HEATER WHEN THE ELECTRIC HEATER IS ENERGIZED.
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) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |