US3130574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Calibration instrument for torque gauges
Assignee: WATERS Manufacturing Inc
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Filing: 1961-05-29
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Granted: 1964-04-28
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Expires: 1981-05-29
Abstract
No abstract record available.
Inventors
- 👤 Robert A Waters
- 👤 Michael A Ayoub
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:47
CPC Classifications
G; G01; G01L; G01L25/00; G01L25/003
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
142 words
A TORQUE INDICATOR COMPRISING, IN COMBINATION, A FLAT CIRCULAR NONMAGNETIC ELECTRICALLY CONDUCTIVE DISK HAVING TORQUE MEASURING INDICIA ON ONE SIDE, A WEIGHT REMOVABLY ATTACHED TO SAID DISK, A SHAFT CONNECTED TO THE CENTER OF SAID DISK, A THREADED ROD ATTACHED TO THE SHAFT ANGULARLY POSITIONABLE RELATIVE TO THE SHAFT IN A PLANE PERPENDICULAR TO THE AXIS OF THE SHAFT, A BALANCE WEIGHT MOVABLY MOUNTED ON THE THREADED ROD FOR BALANCING THE DISK, A BASE ROTATABLY SUPPORTING SAID SHAFT, AND MEANS FOR PRODUCING A MAGNETIC FIELD THROUGH THE UPPER OUTER PORTION OF SAID FLAT CIRCULAR DISK TO PROVIDE DAMPING AGAINST RAPID ROTATION OF THE DISK RELATIVE TO THE BASE, THE SOLE FORCE EXERTED BY THE MAGNETIC FIELD ON THE DISK THUS BEING DAMPING OF ROTATIONAL MOTION AND THE DISK BEING FREE OF FORCE EXERTED BY THE MAGNETIC FIELD WHEN STATIONARY IN ANY POSITION.
References Cited (Backward Citations)
US1305150A
Cited
US1542809A
Cited
US2013109A
Cited
GB458140A
Cited
US2933821A
Cited
US3027748A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |