US3199010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable speed digital converter motor
Assignee: Space Ship Inc
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Filing: 1960-08-22
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Granted: 1965-08-03
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Expires: 1980-08-22
Abstract
No abstract record available.
Inventors
- 👤 Horace M Robinson
- 👤 Gerald W Middy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:05
CPC Classifications
H; H02; H02K; H02K19/00; H02K19/02; H02K19/10; H02K19/103
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
IN A SYNCHRONOUS VARIABLE SPEED MOTOR; A STATOR MEMBER; A ROTOR MEMBER; A PLURALITY OF PRIMARY WINDING SECTIONS FOR ONE OF THE MEMBERS, AND CAPABLE OF SEPARATE EXCITATION; SAID PRIMARY WINDING SECTIONS DEFINING FIELD AXES LOCATED IN SPACED RELATIONSHIP ABOUT THE AXIS OF THE CORRESPONDING MEMBER; CIRCUIT MEANS COOPERABLE WITH A COMMON ALTERNATING CURRENT SOURCE OF EXCITING SAID WINDINGS; MEANS FOR AMPLITUDE MODULATING THE EXCITATION OF THE WINDING SECTIONS IN MULTIPHASE RELATIONSHIP AND AT A FREQUENCY LESS THAN THE FREQUENCY OF THE ALTERNATING CURRENT SOURCE WHEREBY THE MAXIMUM FIELD STRENGTH IS ROTATED
Claim 2
Dependent Claim
92 words
IN A SYNCHRONOUS VARIABLE SPEED MOTOR; A STATOR MEMBER; A ROTOR MEMBER; A PLURALITY OF PRIMARY WINDING SECTIONS FOR ONE OF THE MEMBERS, AND CAPABLE OF SEPARATE EXCITATION; SAID PRIMARY WINDING SECTIONS DEFINING FIELD AXES LOCATED IN SPACED RELATIONSHIP ABOUT THE AXIS OF THE CORRESPONDING MEMBER; CIRCUIT MEANS COOPERABLE WITH A COMMON ALTERNATING CURRENT SOURCE OF EXCITING SAID WINDINGS; MEANS FOR AMPLITUDE MODULATING THE EXCITATION OF THE WINDING SECTIONS IN MULTIPHASE RELATIONSHIP AND AT A FREQUENCY LESS THAN THE FREQUENCY OF THE ALTERNATING CURRENT SOURCE WHEREBY THE MAXIMUM FIELD STRENGTH IS ROTATED
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) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |