US3200230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the heating of travelling thread or tape-shaped products on a transport roller
Assignee: Akzona Inc
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Filing: 1963-01-07
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Granted: 1965-08-10
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Expires: 1983-01-07
Abstract
No abstract record available.
Inventors
- 👤 Bretoniere Andre B De La
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:48
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/10; H05B6/14; H05B6/145; D; D01; D01D; D01D5/00; D01D5/22; D02; D02J; D02J1/00; D02J1/22; D02J1/224; D02J13/00; D02J13/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
IMPROVED HEATING APPARATUS FOR A DRIVEN TRANSPORT ROLLER HAVING A MATERIAL-SUPPORTING CASING, COMPRISING A PLURALITY OF ELECTROMAGNETS POSITIONED WITHIN AND SPACED FROM SAID CASING, SAID ELECTROMAGNETS BEING POSITIONED SO THAT AT LEAST A PORTION OF THE MAGNETICA FLUX FROM THE ELECTROMAGNETS PASSES WITHIN A CONDUCTIVE PART OF SAID CASING FOR HEATING SAID ROLLER, MEANS CONNECING SAID ELECTROMAGNETS ELECTRICALLY, MEANS FOR SUPPLYING POLYPHASE CURRENT SUCCESSIVELY TO SAID ELECTROMAGNETS TO PRODUCE A ROTATING MAGNETIC FLUX, AND REGULATOR MEANS TO VARY THE FREQUENCY OF SAID CURRENT TO CONTROL THE AMOUNT OF HEAT SUPPLIED TO SAID ROLLER INDEPENDENTLY OF THE ROTARY SPEED THEREOF.
Claim 2
Dependent Claim
99 words
IMPROVED HEATING APPARATUS FOR A DRIVEN TRANSPORT ROLLER HAVING A MATERIAL-SUPPORTING CASING, COMPRISING A PLURALITY OF ELECTROMAGNETS POSITIONED WITHIN AND SPACED FROM SAID CASING, SAID ELECTROMAGNETS BEING POSITIONED SO THAT AT LEAST A PORTION OF THE MAGNETICA FLUX FROM THE ELECTROMAGNETS PASSES WITHIN A CONDUCTIVE PART OF SAID CASING FOR HEATING SAID ROLLER, MEANS CONNECING SAID ELECTROMAGNETS ELECTRICALLY, MEANS FOR SUPPLYING POLYPHASE CURRENT SUCCESSIVELY TO SAID ELECTROMAGNETS TO PRODUCE A ROTATING MAGNETIC FLUX, AND REGULATOR MEANS TO VARY THE FREQUENCY OF SAID CURRENT TO CONTROL THE AMOUNT OF HEAT SUPPLIED TO SAID ROLLER INDEPENDENTLY OF THE ROTARY SPEED THEREOF.
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) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |