Patent US3206664A successfully refreshed from Google Patents.
US3206664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plural motor control with diverse speeds for different motors
Assignee: Westinghouse Electric Corp
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Filing: 1963-03-01
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Granted: 1965-09-14
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Expires: 1983-03-01
Abstract
No abstract record available.
Inventors
- 👤 Garland M Lilly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:28
CPC Classifications
H; H02; H02P; H02P5/00; H02P5/46; H02P5/50; H02P5/51
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A CONTROL MEANS COMPRISING, A SOURCE OF DIRECT CURRENT POWER, ROTATABLE MEANS FOR CONVERTING THE DIRECT CURRENT POWER TO ALTERNATING CURRENT POWER AT A PLURALITY OF FREQUENCIES DEPENDENT UPON THE SPEED OF ROTATION THEREOF, A PLURALITY OF DRIVE MEANS FOR SAID CONVERTING MEANS OPERATING AT DIFFERENT SPEEDS, RESPECTIVELY, WITH ONE OF SAID DRIVE MEANS BEING UNIDRIECTIONAL, MEANS FOR SELECTIVELY CONNECTING ANY ONE OF SAID DRIVE MEANS TO SAID CONVERTNG MEANS FOR OPERATING THE LATTER AT DIFFERENT SPEEDS TO PRODUCE ALTERNATING CURRENTS OF DIFFERENT FREQUENCIES, AT LEAST ONE MOVABLE CONTROL ELEMENT, A FREQUENCY RESPONSIVE
Claim 2
Dependent Claim
93 words
A CONTROL MEANS COMPRISING, A SOURCE OF DIRECT CURRENT POWER, ROTATABLE MEANS FOR CONVERTING THE DIRECT CURRENT POWER TO ALTERNATING CURRENT POWER AT A PLURALITY OF FREQUENCIES DEPENDENT UPON THE SPEED OF ROTATION THEREOF, A PLURALITY OF DRIVE MEANS FOR SAID CONVERTING MEANS OPERATING AT DIFFERENT SPEEDS, RESPECTIVELY, WITH ONE OF SAID DRIVE MEANS BEING UNIDRIECTIONAL, MEANS FOR SELECTIVELY CONNECTING ANY ONE OF SAID DRIVE MEANS TO SAID CONVERTNG MEANS FOR OPERATING THE LATTER AT DIFFERENT SPEEDS TO PRODUCE ALTERNATING CURRENTS OF DIFFERENT FREQUENCIES, AT LEAST ONE MOVABLE CONTROL ELEMENT, A FREQUENCY RESPONSIVE
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |