US2801794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for geophysical prospecting
Assignee: California Research LLC
•
Filing: 1951-03-01
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Granted: 1957-08-06
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Expires: 1971-03-01
Abstract
No abstract record available.
Inventors
- 👤 Walter W Garvin
- 👤 Jasper R Leggett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:26
CPC Classifications
G; G01; G01V; G01V7/00; G01V7/02; G01V7/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
138 words
APPARATUS FOR DETERMINING THE VERTICAL COMPONENT OF GRAVITY IN AN AREA DUE TO THE PRESENCE OF A KNOWN GRAVITATIONAL ANOMALY WHICH IS ARBITRARILY DIVIDED INTO A PLURALITY OF ELEMENTARY VOLUMES, COMPRISING A SOURCE OF ALTERNATING CURRENT, A NETWORK CONSISTING OF A PLURALITY OF PARALLEL BRANCHES RESPECTIVELY CORRESPONDING TO THE ELEMENTARY VOLUMES, EACH BRANCH CONSISTING OF A RESISTOR AND A VARIABLE REACTOR CONNECTED IN SERIES IN EACH OF SAID IS A BRANCHES, SAID RESISTOR HAVING A RESISTIVE VALUE WHICH IS A FUNCTION OF THE HORIZONTAL DISTANCE FROM A PRESELECTEDATPOINT IN SAID AREA TO THE CORRESPONDING ELEMENTARY VOLUME,CURRENT RESPONSIVE MEANS CONNECTED IN SERIES WITH SAID PLURALITY OF PARALLEL BRANCHES AND SAID SOURCE OF ALTERNATING CURRENT TO INDICATE THE TOTAL CURRENT FLOW IN SAID NETWORK AS A MEASUREMENT OF THE VERTICAL COMPONENT OF GRAVITY DUE TO SAID ANOMALY AT SAID POINT.
References Cited (Backward Citations)
US2067444A
Cited
US2523453A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-05 | 1961-02-04 | 1961-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-05 | 1965-02-04 | 1965-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-05 | 1969-02-04 | 1969-08-06 | $7700.00 | Window Closed / Lapsed |