US3414790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoelectric motor speed control
Assignee: Gates LearJet Corp
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Filing: 1964-08-21
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Granted: 1968-12-03
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Expires: 1984-08-21
Abstract
No abstract record available.
Inventors
- 👤 Samuel H Auld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:42
CPC Classifications
H; H02; H02P; H02P23/00; H02P23/18; H02P23/186; Y; Y10; Y10S; Y10S388/00; Y10S388/907; Y10S388/917; Y10S388/918; Y10S388/923; Y10S388/933
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A CONTROL SYSTEM FOR DRIVING A MOTOR AT A UNIFORM SPEED OF ROTATION COMPRISING SENSOR MEANS COUPLED TO THE MOTOR PROVIDING PULSES AT A RATE PROPORTIONAL TO ITS SPEED OF ROTATION, CIRCUIT MEANS RESPONSIVE TO THE SENSOR PULSES FOR PRODUCING A SERIES OF CORRESPONDING LIKE ELECTRICAL PULSES THAT ARE SPACED APART IN-TIME IN ACCORDANCE WITH THE MOTOR SPEED, MEANS CONVERTING THE SAID ELECTRICAL PULSES SERIES INTO A CONTROL SIGNAL OF MAGNITUDE CORRESPONDING TO THEIR SAID IN-TIME SPACING, AND AMPLIFYING MEANS RESPONSIVE TO THE CONTROL SIGNAL AND IN CIRCUIT WITH
Claim 2
Dependent Claim
89 words
A CONTROL SYSTEM FOR DRIVING A MOTOR AT A UNIFORM SPEED OF ROTATION COMPRISING SENSOR MEANS COUPLED TO THE MOTOR PROVIDING PULSES AT A RATE PROPORTIONAL TO ITS SPEED OF ROTATION, CIRCUIT MEANS RESPONSIVE TO THE SENSOR PULSES FOR PRODUCING A SERIES OF CORRESPONDING LIKE ELECTRICAL PULSES THAT ARE SPACED APART IN-TIME IN ACCORDANCE WITH THE MOTOR SPEED, MEANS CONVERTING THE SAID ELECTRICAL PULSES SERIES INTO A CONTROL SIGNAL OF MAGNITUDE CORRESPONDING TO THEIR SAID IN-TIME SPACING, AND AMPLIFYING MEANS RESPONSIVE TO THE CONTROL SIGNAL AND IN CIRCUIT WITH
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) | 1971-12-03 | 1972-06-03 | 1972-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-03 | 1976-06-03 | 1976-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-03 | 1980-06-03 | 1980-12-03 | $7700.00 | Window Closed / Lapsed |