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Patent US3090204A successfully refreshed from Google Patents.
US3090204A
Expired / Lapsed
US
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Method of forming concrete shell in ground
Assignee: Raymond International Inc
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Filing: 1959-03-17
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Granted: 1963-05-21
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Expires: 1979-03-17
Abstract
No abstract record available.
Inventors
- 👤 Maxwell M Upson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:05
CPC Classifications
E; E02; E02D; E02D27/00; E02D27/28; E02D7/00; E02D7/28; E02D7/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
THE METHOD OF FORMING A TUBULAR CONCRETE SHELL IN THE GROUND BY MEANS OF A TUBULAR CASING, A TAPERED TUBULAR WEDGING MEMBER OF SUBSTANTIALLY SMALLER MAXIMUM DIAMETER THAN THE CASING, A MANDREL OF SUFFICIENTLY SMALLER DIAMETER THAN THE WEDGING MEMBER FOR SLIDABLE DISPOSITION THEREIN, AND A BOOT PLATE, SAID METHOD COMPRISING: POSITIONING IN THE GROUND TO A SELECTED DEPTH OF PENETRATION SAID CASING MANDREL CONCENTRICALLY SUPPORTED ON SAID BOOT PLATE WITH LIQUID CONCRETE FILLING THE ANNULAR SPACE BETWEEN THE CASING AND MANDREL, WITHDRAWING THE CASING BEFORE THE CONCRETE HAS SET AND FORCING SAID TAPERED WEDGING MEMBER TELESCOPING RELATION WITH RESPECT TO SAID MANDREL, DOWNWARDLY THEREALONG TO DISPLACE SAID LIQUID CONCRETE RADIALLY AWAY FROM SAID MANDREL AND INTO GRIPPING ENGAGEMENT WITH THE EARTH BARED BY WITHDRAWAL OF SAID CASING, WITHDRAWING THE MANDREL WHILE RETAINING SAID WEDGING MEMBER IN ITS DOWNWARDLY THRUST POSITION TO RETAIN SAID CONCRETE IN TUBULAR FROM UNTIL PERMANENTLY SET AND THEREUPON WITHDRAWING SAID WEDGING MEMBER.
Claim 2
Independent Claim
157 words
THE METHOD OF FORMING A TUBULAR CONCRETE SHELL IN THE GROUND BY MEANS OF A TUBULAR CASING, A TAPERED TUBULAR WEDGING MEMBER OF SUBSTANTIALLY SMALLER MAXIMUM DIAMETER THAN THE CASING, A MANDREL OF SUFFICIENTLY SMALLER DIAMETER THAN THE WEDGING MEMBER FOR SLIDABLE DISPOSITION THEREIN, AND A BOOT PLATE, SAID METHOD COMPRISING: POSITIONING IN THE GROUND TO A SELECTED DEPTH OF PENETRATION SAID CASING MANDREL CONCENTRICALLY SUPPORTED ON SAID BOOT PLATE WITH LIQUID CONCRETE FILLING THE ANNULAR SPACE BETWEEN THE CASING AND MANDREL, WITHDRAWING THE CASING BEFORE THE CONCRETE HAS SET AND FORCING SAID TAPERED WEDGING MEMBER TELESCOPING RELATION WITH RESPECT TO SAID MANDREL, DOWNWARDLY THEREALONG TO DISPLACE SAID LIQUID CONCRETE RADIALLY AWAY FROM SAID MANDREL AND INTO GRIPPING ENGAGEMENT WITH THE EARTH BARED BY WITHDRAWAL OF SAID CASING, WITHDRAWING THE MANDREL WHILE RETAINING SAID WEDGING MEMBER IN ITS DOWNWARDLY THRUST POSITION TO RETAIN SAID CONCRETE IN TUBULAR FROM UNTIL PERMANENTLY SET AND THEREUPON WITHDRAWING SAID WEDGING MEMBER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-20 | 1966-11-19 | 1967-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-20 | 1970-11-19 | 1971-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-20 | 1974-11-19 | 1975-05-21 | $7700.00 | Window Closed / Lapsed |