US3274443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Redundant speed control system
Assignee: General Electric Co
•
Filing: 1963-12-05
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Granted: 1966-09-20
•
Expires: 1983-12-05
Abstract
No abstract record available.
Inventors
- 👤 Markus A Eggenberger
- 👤 Paul H Troutman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:02
CPC Classifications
H; H02; H02P; H02P23/00; H02P23/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A REDUNDANT SPEED CONTROL SYSTEM FOR A PRIME MOVER HAVING SERVO MEANS CONTROLLING THE OPERATION THEREOF IN RESPONSE TO AN ELECTRICAL SPEED ERROR SIGNAL REPRESENTING DEVIATION FROM A DESIRED SPEED, COMPRISING: FIRST AND SECOND MEANS RESPONSIVE TO PRIME MOVER SPEED GENERATING FIRST AND SECOND ELECTRICAL SIGNALS RESPECTIVELY PROPORTIONAL TO ACTUAL SPEED, THIRD MEANS GENERATING A THIRD SELECTABLE CONSTANT ELECTRICAL SIGNAL REPRESENTING A DESIRED PRIME MOVER SPEED, FOURTH AND FIFTH MEANS SUMMING THE FIRST SIGNAL WITH THE THIRD SIGNAL AND SUMMING THE SECOND SIGNAL WITH THE THIRD SIGNAL RESPECTIVELY TO PRODUCE TWO SPEED ERROR SIGNALS REPRESENTING THE DIFFERENCE BETWEEN ACTUAL AND DESIRED PRIME MOVER SPEEDS, AND COMMON GATING MEANS RECEIVING BOTH OF SAID ERROR SIGNALS FROM THE FOURTH AND FIFTH MEANS AND ENABLING ONLY THE ERROR SIGNAL CALLING FOR THE LOWER SPEED OF THE PRIME MOVER TO ACTUATE SAID SERVO MEANS.
Claim 2
Dependent Claim
140 words
A REDUNDANT SPEED CONTROL SYSTEM FOR A PRIME MOVER HAVING SERVO MEANS CONTROLLING THE OPERATION THEREOF IN RESPONSE TO AN ELECTRICAL SPEED ERROR SIGNAL REPRESENTING DEVIATION FROM A DESIRED SPEED, COMPRISING: FIRST AND SECOND MEANS RESPONSIVE TO PRIME MOVER SPEED GENERATING FIRST AND SECOND ELECTRICAL SIGNALS RESPECTIVELY PROPORTIONAL TO ACTUAL SPEED, THIRD MEANS GENERATING A THIRD SELECTABLE CONSTANT ELECTRICAL SIGNAL REPRESENTING A DESIRED PRIME MOVER SPEED, FOURTH AND FIFTH MEANS SUMMING THE FIRST SIGNAL WITH THE THIRD SIGNAL AND SUMMING THE SECOND SIGNAL WITH THE THIRD SIGNAL RESPECTIVELY TO PRODUCE TWO SPEED ERROR SIGNALS REPRESENTING THE DIFFERENCE BETWEEN ACTUAL AND DESIRED PRIME MOVER SPEEDS, AND COMMON GATING MEANS RECEIVING BOTH OF SAID ERROR SIGNALS FROM THE FOURTH AND FIFTH MEANS AND ENABLING ONLY THE ERROR SIGNAL CALLING FOR THE LOWER SPEED OF THE PRIME MOVER TO ACTUATE SAID SERVO MEANS.
References Cited (Backward Citations)
US2510296A
Cited
US3070071A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |