System for detecting the malfunction in a detecting device of a displacement
Abstract
Abstract SYSTEM FOR DETECTING THE MALFUNCTION IN A MEASURING DEVICE OF A DISPLACEMENT UTILIZING AT LEAST ONE CYCLICALLY VARYING SIGNAL HAVING A FIRST AND SECOND SIGN IN EACH CYCLE THEREOF AND PRODUCED IN RESPONSE TO THE DISPLACEMENT TO BE MEASURED COMPRISING THE STEPS OF DETECTING THREE CYCLICALLY VARYING SIGNALS INCLUDING THE FIRST MENTIONED AT LEAST ONE CYCLICALLY VARYING SIGNAL EACH HAVING THE SAME CYCLIC PERIOD BUT THEIR PHASES SHIFTED RELATIVELY FROM EACH OTHER, AND DETECTING TWO CONDITIONS AMONG THE EIGHT CONDITIONS IN THE COMBINATION OF THE FIRST OR SECOND SIGN IN THE THREE SIGNALS. THE ABOVE DESCRIBED TWO CONDITIONS WILL NEVER APPEAR IN THE NORMAL FUNCTION OF THE THREE SIGNALS IN RESPONSE TO THE DISPLACEMENT WHILE THE SIX OTHER CONDITIONS IN THE COMBINATION WILL NECESSARILY TAKE PLACE DURING THE NORMAL FUNCTION OF THE SIGNALS, THEREBY PERMITTING THE MALFUNCTION OF THE SIGNALS TO BE POSITIVELY DETECTED BY INSPECTING THE OCCURRENCE OF THE ABOVE DESCRIBED TWO CONDITIONS.
Inventors
- 👤 Shin-Ichi Kamachi
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |