US3329797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-frequency heating apparatus
Assignee: Intertherm Ltd
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Filing: 1965-01-12
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Granted: 1967-07-04
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Expires: 1985-01-12
Abstract
No abstract record available.
Inventors
- 👤 Clark John Mcdougall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:11
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/46; H05B6/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A HIGH-FREQUENCY HEATING APPARATUS COMPRISING A STRAY-FIELD PLATEN ASSEMBLY INCLUDING A PLURALITY OF RODLIKE ELECTRODES IN SUBSTANTIALLY COPLANAR ARRANGEMENT, MEANS FOR SUPPLYING SAID ELECTRODES ALTERNATELY WITH HIGHFREQUENCY CURRENT, SAID ELECTRODES BEING DIVIDED INTO AT LEAST TWO SIMILAR GROUPS, VARIABLE CAPACITOR MEANS DIRECTLY MOUNTED ON SAID PLATEN ASSEMBLY FOR TUNING THE ELETCRIC CIRCUIT OF WHICH IT FORMS PART, AND AT LEAST ONE RIGID BUSBAR ELECTRICALLY CONNECTED TO AND MECHANICALLY SUPPORTING ALTERNATE ONES OF SAID ELECTRODES, SAID VARIABLE CAPACITOR MEANS INCLUDING AT LEAST ONE FIXED PLATE ELECTRICALLY CONNECTED TO AND MECHANICALLY SUPPORTING ELECTRODES INTERMEDIATE SAID ALTERNATE ELECTRODES.
Claim 2
Dependent Claim
95 words
A HIGH-FREQUENCY HEATING APPARATUS COMPRISING A STRAY-FIELD PLATEN ASSEMBLY INCLUDING A PLURALITY OF RODLIKE ELECTRODES IN SUBSTANTIALLY COPLANAR ARRANGEMENT, MEANS FOR SUPPLYING SAID ELECTRODES ALTERNATELY WITH HIGHFREQUENCY CURRENT, SAID ELECTRODES BEING DIVIDED INTO AT LEAST TWO SIMILAR GROUPS, VARIABLE CAPACITOR MEANS DIRECTLY MOUNTED ON SAID PLATEN ASSEMBLY FOR TUNING THE ELETCRIC CIRCUIT OF WHICH IT FORMS PART, AND AT LEAST ONE RIGID BUSBAR ELECTRICALLY CONNECTED TO AND MECHANICALLY SUPPORTING ALTERNATE ONES OF SAID ELECTRODES, SAID VARIABLE CAPACITOR MEANS INCLUDING AT LEAST ONE FIXED PLATE ELECTRICALLY CONNECTED TO AND MECHANICALLY SUPPORTING ELECTRODES INTERMEDIATE SAID ALTERNATE ELECTRODES.
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) | 1970-07-03 | 1971-01-02 | 1971-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-03 | 1975-01-02 | 1975-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-03 | 1979-01-02 | 1979-07-04 | $7700.00 | Window Closed / Lapsed |