US3103117A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tensiometer
Assignee: Individual
•
Filing: 1960-06-22
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Granted: 1963-09-10
•
Expires: 1980-06-22
Abstract
No abstract record available.
Inventors
- 👤 Lorenzo A Richards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:49
CPC Classifications
A; A01; A01G; A01G25/00; A01G25/16; A01G25/167; E; E02; E02D; E02D1/00; E02D1/02; E02D1/027
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
A TENSIOMETER, COMPRISING: A POROUS SOIL MOISTURE SENSING CELL; AN ELONGATED TUBE EXTENDING UPWARDLY THEREFROM; A REMOVABLE CLOSURE FOR THE UPPER END OF SAID TUBE, SAID CELL AND TUBE ADAPTED TO BE FILLED WITH WATER AND SEALED BY SAID CLOSURE WHEREBY, UPON BURYING SAID CELL IN SOIL, A SUCTION DEVELOPS IN SAID TUBE CORRESPONDING TO SOIL SUCTION; AND A MANOMETER INCLUDING AN INDICATING TUBE DISPOSED LONGITUDINALLY OF AND WITHIN THE UPPER PORTION OF SAID ELONGATED TUBE AND OPEN AT ITS UPPER END FOR EXPOSURE TO THE SUCTION IN SAID ELONGATED TUBE, A RESERVOIR DISPOSED EXTERNALLY OF SAID ELONGATED TUBE EXPOSED TO ATMOSPHERIC PRESSURE AND COMMUNICATING WITH SAID INDICATING TUBE, A MANOMETER LIQUID IN SAID INDICATING TUBE AND RESERVOIR AND A SCALE STRIP DISPOSED WITHIN AND PROTECTED BY SAID ELONGATED TUBE IN COOPERATIVE RELATION TO SAID INDICATING TUBE; SAID ELONGATED TUBE BEING TRANSPARENT AT LEAST IN THE REGION OF SAID INDICATING TUBE.
Claim 2
Dependent Claim
151 words
A TENSIOMETER, COMPRISING: A POROUS SOIL MOISTURE SENSING CELL; AN ELONGATED TUBE EXTENDING UPWARDLY THEREFROM; A REMOVABLE CLOSURE FOR THE UPPER END OF SAID TUBE, SAID CELL AND TUBE ADAPTED TO BE FILLED WITH WATER AND SEALED BY SAID CLOSURE WHEREBY, UPON BURYING SAID CELL IN SOIL, A SUCTION DEVELOPS IN SAID TUBE CORRESPONDING TO SOIL SUCTION; AND A MANOMETER INCLUDING AN INDICATING TUBE DISPOSED LONGITUDINALLY OF AND WITHIN THE UPPER PORTION OF SAID ELONGATED TUBE AND OPEN AT ITS UPPER END FOR EXPOSURE TO THE SUCTION IN SAID ELONGATED TUBE, A RESERVOIR DISPOSED EXTERNALLY OF SAID ELONGATED TUBE EXPOSED TO ATMOSPHERIC PRESSURE AND COMMUNICATING WITH SAID INDICATING TUBE, A MANOMETER LIQUID IN SAID INDICATING TUBE AND RESERVOIR AND A SCALE STRIP DISPOSED WITHIN AND PROTECTED BY SAID ELONGATED TUBE IN COOPERATIVE RELATION TO SAID INDICATING TUBE; SAID ELONGATED TUBE BEING TRANSPARENT AT LEAST IN THE REGION OF SAID INDICATING TUBE.
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) | 1966-09-09 | 1967-03-11 | 1967-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-09 | 1971-03-11 | 1971-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-09 | 1975-03-11 | 1975-09-10 | $7700.00 | Window Closed / Lapsed |