Patent US3309929A successfully refreshed from Google Patents.
US3309929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impedance tuning of a piezoelectric device
Assignee: Individual
•
Filing: 1964-03-16
•
Granted: 1967-03-21
•
Expires: 1984-03-16
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Simmons
- 👤 John J Buckley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:20
CPC Classifications
G; G01; G01C; G01C19/00; G01C19/56; G01C19/567; G01C19/5691; B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B06B1/0644; B06B1/0655
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
AN APPARATUS FOR DETERMINING ANGULAR VELOCITY OF A ROTATING OBJECT COMPRISING: (A) A PIEZOELECTRIC CYLINDER MOUNTED ON THE ROTATING OBJECT; (B) AN OSCILLATOR CONNECTED TO THE CYLINDER FOR CAUSING RADIAL VIBRATION OF THE CYLINDER WHILE THE CYLINDER ROTATES CAUSING TORSIONAL VIBRATION THEREOF, THE TORSIONAL VIBRATION BEING INDICATIVE OF ANGULAR VELOCITY; (C) AND MEANS FOR TUNING THE CYLINDER WHEREIN THE TUNING MEANS COMPRISE; PLATED STRIPS LONGITUDINALLY CONNECTED TO THE CYLINDER IN PAIRS AND VARIABLE IMPEDANCES CONNECTING PAIRS OF THE STRIPS.
Claim 2
Independent Claim
79 words
AN APPARATUS FOR DETERMINING ANGULAR VELOCITY OF A ROTATING OBJECT COMPRISING: (A) A PIEZOELECTRIC CYLINDER MOUNTED ON THE ROTATING OBJECT; (B) AN OSCILLATOR CONNECTED TO THE CYLINDER FOR CAUSING RADIAL VIBRATION OF THE CYLINDER WHILE THE CYLINDER ROTATES CAUSING TORSIONAL VIBRATION THEREOF, THE TORSIONAL VIBRATION BEING INDICATIVE OF ANGULAR VELOCITY; (C) AND MEANS FOR TUNING THE CYLINDER WHEREIN THE TUNING MEANS COMPRISE; PLATED STRIPS LONGITUDINALLY CONNECTED TO THE CYLINDER IN PAIRS AND VARIABLE IMPEDANCES CONNECTING PAIRS OF THE STRIPS.
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) | 1970-03-20 | 1970-09-19 | 1971-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-20 | 1974-09-19 | 1975-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-20 | 1978-09-19 | 1979-03-21 | $7700.00 | Window Closed / Lapsed |