US3408868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical gravity meter
Assignee: WILLIAM S SHAUGHNESSY
•
Filing: 1965-09-22
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Granted: 1968-11-05
•
Expires: 1985-09-22
Abstract
No abstract record available.
Inventors
- 👤 William S Shaughnessy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:07
CPC Classifications
G; G01; G01V; G01V7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A GRAVITATIONAL FORCE MEASURING DEVICE, COMPRISING A SUPPORT, AN ELECTRIC MOTOR MOUNTED ON SAID SUPPORT, SAID MOTOR HAVING AN AXIALLY HORIZONTAL ROTOR AND BEARING MEANS ROTATABLY SUPPORTING SAID ROTOR, MEANS FOR KEEPING SAID ROTOR ROTATING AT A CONSTANT SPEED AT ALL LOADS APPLIED FRICTIONALLY TO SAID BEARING MEANS, MEANS AT SAID BEARING MEANS FOR DETECTING FRICTIONAL HEAT PULSES GENERATED THEREAT DURING EACH ROTATION OF THE ROTOR, AND MEANS FOR INTEGRATING MEASUREMENTS OF HEAT PULSES GENERATED AT SAID BEARING MEANS OVER A PERIOD OF TIME, WHEREBY THE GRAVITATIONAL FORCE EXERTED ON THE MASS OF SAID ROTOR IS DETERMINED BY AN INTEGRATED MEASUREMENT OF SAID HEAT PULSES OVER SAID PERIOD OF TIME, AND WHEREBY A CHANGE IN SAID GRAVITATIONAL FORCE IS MEASURED BY A CHANGE IN SAID INTEGRATED MEASUREMENT OF SAID HEAT PULSES.
Claim 2
Dependent Claim
131 words
A GRAVITATIONAL FORCE MEASURING DEVICE, COMPRISING A SUPPORT, AN ELECTRIC MOTOR MOUNTED ON SAID SUPPORT, SAID MOTOR HAVING AN AXIALLY HORIZONTAL ROTOR AND BEARING MEANS ROTATABLY SUPPORTING SAID ROTOR, MEANS FOR KEEPING SAID ROTOR ROTATING AT A CONSTANT SPEED AT ALL LOADS APPLIED FRICTIONALLY TO SAID BEARING MEANS, MEANS AT SAID BEARING MEANS FOR DETECTING FRICTIONAL HEAT PULSES GENERATED THEREAT DURING EACH ROTATION OF THE ROTOR, AND MEANS FOR INTEGRATING MEASUREMENTS OF HEAT PULSES GENERATED AT SAID BEARING MEANS OVER A PERIOD OF TIME, WHEREBY THE GRAVITATIONAL FORCE EXERTED ON THE MASS OF SAID ROTOR IS DETERMINED BY AN INTEGRATED MEASUREMENT OF SAID HEAT PULSES OVER SAID PERIOD OF TIME, AND WHEREBY A CHANGE IN SAID GRAVITATIONAL FORCE IS MEASURED BY A CHANGE IN SAID INTEGRATED MEASUREMENT OF SAID HEAT PULSES.
References Cited (Backward Citations)
US2936624A
Cited
US3178946A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-05 | 1972-05-06 | 1972-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-05 | 1976-05-06 | 1976-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-05 | 1980-05-06 | 1980-11-05 | $7700.00 | Window Closed / Lapsed |