Piezoelectric quartz vibrator
Abstract
Abstract A PIEZOELECTRIC QUARTZ VIBRATOR WITH A CRYSTALLINE QUARTZ ELEMENT HAVING THE FORM OF A BAR OF RECTANGULAR CROSS SECTION SO CUT RELATIVE TO THE ORTHOGONAL AXES OF THE QUARTZ CRYSTAL THAT THE LENGTH OF THE CRYSTAL LINE QUARTZ ELEMENT IS DISPOSED IN THE DIRECTION OF THE X-AXIS OF THE QUARTZ CRYSTAL AND THE WIDER SIDE SURFACES ARE ALMOST PARALLEL TO THE SIDE SURFACE R OF THE MAJOR RHOMBOHEDRON OF THE QUARTZ CRYSTAL AND FORM WITH OTHER AXES Y AND Z OF THE QUARTZ CRYSTAL ANGLES APPROXIMATING 45*. ELECTRODES OF OPPOSITE POLAARITY OF THE PIEZOELECTRIC QUARTZ VIBRATOR ARE DISPOSED ON AT LEAST ONE PAIR OF THE OPPOSITE SIDE SURFACES OF THE CRYSTALLINE ELEMENT. THE PIEZOELECTRIC QUARTZ VIBRATOR HAS A LOW (ZERO) TEMPERATURE COEFFICIENT OF FREQUENCY WHICH IS CONTROLLED BY CHANGING THE RATION OF THE THICKNESS TO THE WIDTH OF THE CRYSTALLINE QUARTZ ELEMENT AT A CONSTANT VALUE OF ITS CUT ANGLE.
Inventors
- 👤 Petr Grigorievich Pozdnyakov
- 👤 Valentina Georgievna Androsova
Bibliographic Details
Claims Analysis
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |