US4247736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Induction heater having a cryoresistive induction coil
Assignee: Individual
•
Filing: 1978-12-21
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Granted: 1981-01-27
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Expires: 1998-12-21
Abstract
Abstract An induction heater having a cryoresistive induction coil comprising an induction coil positioned in a cryostat filled with a cryogenic coolant having a temperature in the range of from 15° to 120° K., a heat-insulating element disposed around the charge to be heated, and a cooled baffle interposed between the cryostat and the heat-insulating element, the induction coil being formed of a metal with chemical purity of 99.99 percent, and at least a part of the cryostat being made of a dielectric material.
Inventors
- 👤 Valentin A. Grigoriev
- 👤 Viktor M. Brodyansky
- 👤 Mikhail M. Sokolov
- 👤 Alexandr B. Kuvaldin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:39
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/22
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
165 words
An induction heater comprising: an induction coil for producing an electromagnetic field; a means for cooling said induction coil, said means for cooling including a cryostat filled with a cryogenic coolant, and a plurality of pipes connecting said cryostat with a source of cryogenic coolant; said induction coil disposed in said cryostat; a heat-insulating element encompassing the product to be heated, said element having no provision for cooling and being made of a non-conductive material, whereby said heat-insulating suppresses the thermal flux released by said product to be heated toward said induction coil; a cooled sectionalized baffle for suppressing the heat flux released by said product to be heated, said baffle being interposed between said cryostat and said heat-insulating element; said induction coil being made of metal having at least 99.99 percent chemical purity; said cryogenic coolant being of a temperature in the range from 15° to 120° K.; and said cryostat at least partially including a dielectric material thereby forming an open electric circuit.
Claim 2
Dependent Claim
165 words
An induction heater comprising: an induction coil for producing an electromagnetic field; a means for cooling said induction coil, said means for cooling including a cryostat filled with a cryogenic coolant, and a plurality of pipes connecting said cryostat with a source of cryogenic coolant; said induction coil disposed in said cryostat; a heat-insulating element encompassing the product to be heated, said element having no provision for cooling and being made of a non-conductive material, whereby said heat-insulating suppresses the thermal flux released by said product to be heated toward said induction coil; a cooled sectionalized baffle for suppressing the heat flux released by said product to be heated, said baffle being interposed between said cryostat and said heat-insulating element; said induction coil being made of metal having at least 99.99 percent chemical purity; said cryogenic coolant being of a temperature in the range from 15° to 120° K.; and said cryostat at least partially including a dielectric material thereby forming an open electric circuit.
Claim 3
Dependent Claim
33 words
An induction heater as claimed in claim 1, wherein the said induction coil is formed of aluminum, and said cryogenic coolant being a condensed gas with a temperature of 70° to 120° K.
Claim 4
Dependent Claim
45 words
An induction heater as claimed in claim 1, wherein said induction coil is formed of aluminum with a purity of its chemical composition of 99.995 percent, and a condensed gas with a temperature of 15° to 35° K. is used as the cryogenic coolant. PG,12
Claim 5
Dependent Claim
31 words
An induction heater as claimed in claims 1, 2, or 3, wherein said cooled baffle is placed in close proximity to said cryostat and in spaced relationship with said heat-insulating element.
References Cited (Backward Citations)
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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) | 1984-01-27 | 1984-07-28 | 1985-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-27 | 1988-07-28 | 1989-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-27 | 1992-07-28 | 1993-01-27 | $7700.00 | Window Closed / Lapsed |