Regulator-meter utilizing a beam of light for indication and regulation
Abstract
Abstract REGULATOR-METER APPARATUS INCLUDES SIGNAL-RESPONSIVE METER MECHANISM FOR PROJECTING A LIGHT SPOT ONTO A TRANSPARENT SCREEN SUCH THAT THE SPOT TRANSVERSES THE SCREEN DURING SIGNAL-CAUSED MOVEMENT OF THE MECHANISM. THE POSITION OF THE SPOT ON THE SCREEN IS DETECTED BY TWO PHOTOSENSITIVE ELEMENTS WHICH DEFINE ONE SET POINT FOR THE REGULATOR PORTION OF THE APPARATUS, THE ELEMENTS BEING SPACED APART A DISTANCE SLIGHTLY GREATER THAN THE CORRESPONDING CROSSSECTIONAL DIMENSIONS OF THE SPOT AND HAVING THE OUTPUTS THEREOF CONNECTED TO DIFFERENT ONES OF THE SET AND RESET INPUTS OF A BISTABLE MULTIVIBRATOR. THE BISTABLE ASSUMES EITHER ITS SET OR RESET STATE DEPENDING UPON THE POSITION OF THE SPOT RELATIVE TO THE ELEMENTS. CIRCUITRY IS PROVIDED FOR EFFECTING INITIAL FULL-SCALE ENERGIZATION AND DE-ENERGIZATION OF THE MECHANISM, CAUSING THE BISTABLE TO ASSUME A KNOWN INITIAL STATE, FOR EXAMPLE, THE RESET STATE. THE CROSS-SECTIONAL SHAPE OF THE SPOT IS DEFINED BY A SUITABLY APERATURED MASK, MOUNTED SO AS TO BE RESPONSIVE TO THE DISPLACEMENTS OF BOTH A PROPORTIONAL-EFFECT AND AN INTEGRAL-EFFECT BIMETALLIC ELEMENT.
Inventors
- 👤 Michel Dumast
- 👤 Guy Rouzaud
- 👤 Luc Thevenin
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |