Patent US3588660A successfully refreshed from Google Patents.
US3588660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Master-slave plural motor positioning control
Assignee: Airco Inc
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Filing: 1966-10-17
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Granted: 1971-06-28
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Expires: 1986-10-17
Abstract
Abstract A SYNCHRONIZING SYSTEM FOR WELDING BOTH SIDES OF A MAGNETIC PLATE INCLUDING A MASTER MOTOR DRIVEN CARRIAGE MOVING ALONG ONE SIDE OF THE PLATE AND CARRYING AN AC MAGNETIC FIELD GENERATOR WHICH IS E-SHAPED, A SLAVE MOTOR DRIVEN CARRIAGE TO BE MOVED IN SYNCHRONISM ON THE OPPOSITE SIDE OF THE PLATE AND CARRYING AN ARMATURE WHICH UNBALANCES THE MAGNETIC FIELD IF THE CARRIAGES ARE OUT OF SYNCHRONISM. THE E-SHAPED GENERATOR INCLUDING SECONDARY WINDINGS SENSING THE UNBALANCE, AND MOTOR CONTROL MEANS CONTROLLING THE SLAVE MOTOR ACCORDINGLY.
Inventors
- 👤 Rawlins E Purkhiser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:11
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/12; H; H02; H02P; H02P5/00; H02P5/46; H02P5/48; H02P5/485
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |