US3080468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Billet heater control and method
Assignee: Lindberg Engineering Co
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Filing: 1960-03-07
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Granted: 1963-03-05
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Expires: 1980-03-07
Abstract
No abstract record available.
Inventors
- 👤 Othmar R Wuczkowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:15
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/275; G05D23/1919
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
145 words
A CONTROL SYSTEM FOR A BILLET HEATER HAVING AN OPEN ENDED INDUCTION COIL TO RECEIVE AND HEAT A BILLET, A FEEDER ADJACENT TO ONE END OF THE COIL TO RECEIVE A BILLET TO BE HEATED AND TO ALIGN THE BILLET THEREON WITH THE COIL, AND POWER OPERATED MEANS TO MOVE A BILLET CARRIED BY THE FEEDER INTO THE COIL, THE CONTROL SYSTEM COMPRISING A CIRCUIT TO SUPPLY CURRENT TO THE COIL, A POWER METER IN THE CIRCUIT, TIMING MEANS OPERATED BY THE POWER METER TO INTERRUPT THE CIRCUIT AFTER A PREDETERMINED FLOW OF POWER THERETHROUGH, SENSING MEANS TO SENSE THE TEMPERATURE OF A BILLET IN THE COIL, A MANUALLY OPERABLE CONTROL TO CLOSE SAID CIRCUIT AND TO CONDITION THE SENSING MEANS FOR OPERATION, AND CONTROL MEANS OPERATED BY THE SENSING MEANS TO INITIATE OPERATION OF THE TIMING MEANS AFTER THE BILLET REACHES A PREDETERMINED TEMPERATURE.
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) | 1966-03-04 | 1966-09-03 | 1967-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-04 | 1970-09-03 | 1971-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-04 | 1974-09-03 | 1975-03-05 | $7700.00 | Window Closed / Lapsed |