US3290930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustic wire strain gauges
Assignee: Shell USA Inc
•
Filing: 1964-05-29
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Granted: 1966-12-13
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Expires: 1984-05-29
Abstract
No abstract record available.
Inventors
- 👤 John W Drinkwater
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:25
CPC Classifications
G; G01; G01L; G01L1/00; G01L1/10; G08; G08C; G08C17/00; G08C17/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
AN APPARATUS FOR MEASURING THE TORQUE OF A ROTATING SHAFT COMPRISING: AN ACOUSTIC WIRE STRAIN GAUGE, SAID WIRE STRAIN GAUGE BEING OPERABLE ATTACHED TO SAID SHAFT; A FEEDBACK COIL, SAID FEEDBACK COIL BEING DISPOSED ADJACENT SAID WIRE STRAIN GAUGE; A PICKUP COIL, SAID PICKUP COIL BEING DISPOSED ADJACENT SAID WIRE STRAIN GAUGE; A RADIO TRANSMITTER, SAID RADIO TRANSMITTER BEING MOUNTED ON SAID SHAFT, SAID PICKUP COIL BEING COUPLED TO SAID RADIO TRANSMITTER TO MODULATE THE SIG-
Claim 2
Independent Claim
76 words
AN APPARATUS FOR MEASURING THE TORQUE OF A ROTATING SHAFT COMPRISING: AN ACOUSTIC WIRE STRAIN GAUGE, SAID WIRE STRAIN GAUGE BEING OPERABLE ATTACHED TO SAID SHAFT; A FEEDBACK COIL, SAID FEEDBACK COIL BEING DISPOSED ADJACENT SAID WIRE STRAIN GAUGE; A PICKUP COIL, SAID PICKUP COIL BEING DISPOSED ADJACENT SAID WIRE STRAIN GAUGE; A RADIO TRANSMITTER, SAID RADIO TRANSMITTER BEING MOUNTED ON SAID SHAFT, SAID PICKUP COIL BEING COUPLED TO SAID RADIO TRANSMITTER TO MODULATE THE SIG-
References Cited (Backward Citations)
DE537649C
Cited
US3062043A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |