Photoelectric velocity indicator with zero speed detection capability
Abstract
Abstract THIS INVENTION RELATES TO A SIGNAL GENERATOR FOR PRODUCING ELECTRICAL SIGNALS IN ACCORDANCE WITH THE ANGULAR VELOCITY OF A ROTATING ELEMENT AND INCLUDES A ROTOR, A LIGHTEMITTING TRANSMITTING DEVICE AND A TRANSDUCING DEVICE. THE ROTOR PROSSESS OPTICAL QUALITIES SUCH THAT THERE EXISTS AT LEAST ONE REGION OF LOW TRANSLUCENCE AND AT LEAST ONE REGION OF HIGH TRANSLUCENCE WHEN IN THE PRESENCE OF RADIANT ENERGY. THE LIGHT-EMITTING TRANSMITTING DEVICE HAS A PAIR OF INPUT LEADS UPON WHICH IS IMPRESSED A CARRIER SIGNAL. THE TRANSMITTING DEVICE INCLUDES A CASING WHICH IS POSITIONED ADJACENT THE ROTOR SO THAT LIGHT RAYS ARE TRANSMITTED THROUGH AN OPENING IN THE CASING SUCH THAT RADIANT ENERGY SIGNALS ARE PORDUCED IN ACCORDANCE WITH THE MOVEMENT OF THE ROTOR. THE TRANSDUCING DEVICE ALSO INCLUDES A CASING WHICH IS POSITIONED ADJACENT THE ROTOR AND MEANS FOR RECEIVING THE RADIANT ENERGY SIGNALS THROUGH AN OPENING IN THE CASING OF THE TRANSDUCING DEVICE. THE TRANSDUCING DEVICE INCLUDES MEANS FOR CONVERTING THE RECEIVED RADIANT ENERGY SIGNALS INTO CORRESPONDING ELECTRICAL SIGNALS WHICH, IN TURN, ARE APPLIED TO A PAIR OF OUTPUT LEADS.
Inventors
- 👤 Reed H Grundy
Bibliographic Details
Claims Analysis
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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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |