Patent US3559015A successfully refreshed from Google Patents.
US3559015A
Expired / Lapsed
US
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Thermic starting device
Assignee: Danfoss AS
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Filing: 1969-04-07
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Granted: 1971-01-26
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Expires: 1989-04-07
Abstract
Abstract A SINGLE-PHASE MOTOR HAVING A MAIN WINDING AND A STARTING WINDING IN A SPLIT-PHASE CONFIGURATION. A BIMETALLIC SWITCH NORMALLY COLSED WHEN THE MOTOR IS DEENERGIZED. GASEOUS HEATING MEANS ENCLOSES THE SWITCH CONTACTS AND HEATS A MOVABLE CONTACT OF THE SWITCH WHEN IT HAS OPENED THEREBY KEEPING THE SWITCH OPENED SO THAT THE STARTING WINDING, IN SERIES WITH THE SWITCH, IS MAINTAINED IN A OPEN CONDITION SO THE STARTING WINDING IS DEENERGIZED. THE GASEOUS HEATING MEANS IS CONSTRUCTED AS A FLOW DISCHARGE DEVICE.
Inventors
- 👤 Holger V Vind
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:49
CPC Classifications
H; H02; H02P; H02P1/00; H02P1/16; H02P1/42
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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |