Patent US4693281A successfully refreshed from Google Patents.
Patent US3299336A successfully refreshed from Google Patents.
US3299336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamoelectric machine having solid state commutation
Assignee: Carrier Corp
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Filing: 1964-06-09
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Granted: 1967-01-17
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Expires: 1984-06-09
Abstract
No abstract record available.
Inventors
- 👤 Virgil I Johannes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:42
CPC Classifications
H; H02; H02K; H02K29/00; H02K29/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
187 words
IN A MOTOR HAVING A ROTOR AND AT LEAST ONE ENERGIZING WINDING, THE COMBINATION OF A FIRST PAIR OF SWITCHING DEVICES, ONE OF SAID SWITCHING DEVICES BEING ADAPTED IN RESPONSE TO A FIRST CONTROL SIGNAL TO CONNECT SAID WINDING WITH THE POSITIVE SIDE OF AN ENERGY SOURCE, A CAPACITOR, THE OTHER OF SAID FIRST PAIR OF SWITCHING DEVICES BEING ADAPTED IN RESPONSE TO A SECOND CONTROL SIGNAL TO CONNECT SAID WINDING WITH THE POSITIVE SIDE OF SAID ENERGY SOURCE THROUGH SAID CAPACITOR, A SECOND PAIR OF SWITCHING DEVICES, ONE OF SAID SWITCHING DEVICES BEING ADAPTED IN RESPONSE TO SAID FIRST CONTROL SIGNAL TO CONNECT SAID WINDING WITH THE NEGATIVE SIDE OF SAID ENERGY SOURCE, THE OTHER OF SAID SECOND PAIR OF SWITCHING DEVICES BEING ADAPTED IN RESPONSE TO SAID SECOND CONTROL SIGNAL TO CONNECT SAID WINDING WITH THE NEGATIVE TERMINAL OF SAID ENERGY SOURCE THROUGH SAID CAPACITOR, AND CONTROL MEANS RESPONSIVE TO MOVEMENT OF SAID MOTOR ROTOR ADAPTED TO PROVIDE SAID FIRST AND SECOND CONTROL SIGNALS AT ONE OF SAID FIRST AND SECOND PAIRS OF SWITCHING DEVICES IN A DETERMINED SEQUENCE TO ENERGIZE AND DEENERGIZE SAID WINDING.
Claim 2
Dependent Claim
187 words
IN A MOTOR HAVING A ROTOR AND AT LEAST ONE ENERGIZING WINDING, THE COMBINATION OF A FIRST PAIR OF SWITCHING DEVICES, ONE OF SAID SWITCHING DEVICES BEING ADAPTED IN RESPONSE TO A FIRST CONTROL SIGNAL TO CONNECT SAID WINDING WITH THE POSITIVE SIDE OF AN ENERGY SOURCE, A CAPACITOR, THE OTHER OF SAID FIRST PAIR OF SWITCHING DEVICES BEING ADAPTED IN RESPONSE TO A SECOND CONTROL SIGNAL TO CONNECT SAID WINDING WITH THE POSITIVE SIDE OF SAID ENERGY SOURCE THROUGH SAID CAPACITOR, A SECOND PAIR OF SWITCHING DEVICES, ONE OF SAID SWITCHING DEVICES BEING ADAPTED IN RESPONSE TO SAID FIRST CONTROL SIGNAL TO CONNECT SAID WINDING WITH THE NEGATIVE SIDE OF SAID ENERGY SOURCE, THE OTHER OF SAID SECOND PAIR OF SWITCHING DEVICES BEING ADAPTED IN RESPONSE TO SAID SECOND CONTROL SIGNAL TO CONNECT SAID WINDING WITH THE NEGATIVE TERMINAL OF SAID ENERGY SOURCE THROUGH SAID CAPACITOR, AND CONTROL MEANS RESPONSIVE TO MOVEMENT OF SAID MOTOR ROTOR ADAPTED TO PROVIDE SAID FIRST AND SECOND CONTROL SIGNALS AT ONE OF SAID FIRST AND SECOND PAIRS OF SWITCHING DEVICES IN A DETERMINED SEQUENCE TO ENERGIZE AND DEENERGIZE SAID WINDING.
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) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |