Patent US3075588A successfully refreshed from Google Patents.
US3075588A
Expired / Lapsed
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Soil sampler
Assignee: Individual
•
Filing: 1960-08-19
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Granted: 1963-01-29
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Expires: 1980-08-19
Abstract
No abstract record available.
Inventors
- 👤 Robert E Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:25
CPC Classifications
E; E02; E02D; E02D1/00; E02D1/02; E02D1/04; E21; E21B; E21B25/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
SOIL SAMPLING APPARATUS COMPRISING A TUBE ADAPTED TO EXTEND FROM GROUND SURFACE LEVEL TO A SUBSURFACE SOIL TEST REGION, A SOIL SAMPLING HEAD AT THE SUBSURFACE END OF THE TUBE, SAID HEAD COMPRISING A HOLLOW BODY HAVING AN END OPENING, PLUG MEANS NORMALLY CLOSING SAID OPENING AND MOUNTED FOR LONGITUDINAL MOVEMENT IN SAID BODY, SPRING MEANS FOR BIASING AND PLUG MEANS TO A RETRACTED POSITION AWAY FROM SAID OPENING, LATCH MEANS COMPRISING COOPERATING MEANS ON SAID BODY AND SAID PLUG MEANS FOR HOLDING SAID PLUG MEANS IN SAID OPENING AGAINST THE BIAS OF SAID SPRING MEANS, SAID LATCH MEANS BEING RESPONSIVE TO AXIAL DISPLACEMENT OF SAID BODY WITH RESPECT TO SAID PLUG MEANS TO RELEASE THE PLUG MEANS FOR PROJECTION BY THE SPRING MEANS TO A RETRACTED POSITION IN WHICH A SOIL SAMPLE MAY BE ADMITTED INTO SAID BODY.
Claim 2
Dependent Claim
139 words
SOIL SAMPLING APPARATUS COMPRISING A TUBE ADAPTED TO EXTEND FROM GROUND SURFACE LEVEL TO A SUBSURFACE SOIL TEST REGION, A SOIL SAMPLING HEAD AT THE SUBSURFACE END OF THE TUBE, SAID HEAD COMPRISING A HOLLOW BODY HAVING AN END OPENING, PLUG MEANS NORMALLY CLOSING SAID OPENING AND MOUNTED FOR LONGITUDINAL MOVEMENT IN SAID BODY, SPRING MEANS FOR BIASING AND PLUG MEANS TO A RETRACTED POSITION AWAY FROM SAID OPENING, LATCH MEANS COMPRISING COOPERATING MEANS ON SAID BODY AND SAID PLUG MEANS FOR HOLDING SAID PLUG MEANS IN SAID OPENING AGAINST THE BIAS OF SAID SPRING MEANS, SAID LATCH MEANS BEING RESPONSIVE TO AXIAL DISPLACEMENT OF SAID BODY WITH RESPECT TO SAID PLUG MEANS TO RELEASE THE PLUG MEANS FOR PROJECTION BY THE SPRING MEANS TO A RETRACTED POSITION IN WHICH A SOIL SAMPLE MAY BE ADMITTED INTO SAID BODY.
References Cited (Backward Citations)
US1489916A
Cited
US2283650A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |