Patent US3203188A successfully refreshed from Google Patents.
US3203188A
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Method and apparatus for preparing a trench for a subsurface conduit line and for laying such a line
Assignee: TRENCHER Corp OF AMERICA A TX CORP
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Filing: 1961-10-23
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Granted: 1965-08-31
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Expires: 1981-10-23
Abstract
No abstract record available.
Inventors
- 👤 Clifford J Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:14
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/18; E02F3/181; E02F5/00; E02F5/02; E02F5/08; E02F5/12; E02F7/00; E02F7/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
APPARATUS FOR PREPARING A TRENCH FOR A SUBSURFACE CONDUIT LINE AND LAYING SUCH A LINE, COMPRISING: A TRENCHING MACHINE HAVING DIGGING MEANS OPERABLE FOR PROGRESTRENCH; SEPARATING MEANS CONNECTED TO SAID MACHINE OPERABLE TO SEPARATE FROM THE GROUND REMOVED INN THE FORMING OF THE TRENCH, THE FINER PARRTICLES F SUCH GROUND; DISCHARGING MEANS OPERATIVELY CONNECTED WITHH SAID SEPARATING MEANS FOR DISCHARGING THE COARSE PARTICLES OF SUCH REMOVED GROUND ON THE SURFACE OF THE GROUND TO ONE SIDE OF THE MOUTH OF THE TRENCH; A FIRST DEPOSITING MEANS OPERATIVELY CONNECTED WITH SAID SEPARATING MEANS FOR DEPOSITING ON TTHE SURFACE OF THE GROUND ON THE OTHER SIDE OF THE MOUTH OF SAID TRENCH, A PILE OF SAID FINE PARTICLES
Claim 2
Dependent Claim
116 words
APPARATUS FOR PREPARING A TRENCH FOR A SUBSURFACE CONDUIT LINE AND LAYING SUCH A LINE, COMPRISING: A TRENCHING MACHINE HAVING DIGGING MEANS OPERABLE FOR PROGRESTRENCH; SEPARATING MEANS CONNECTED TO SAID MACHINE OPERABLE TO SEPARATE FROM THE GROUND REMOVED INN THE FORMING OF THE TRENCH, THE FINER PARRTICLES F SUCH GROUND; DISCHARGING MEANS OPERATIVELY CONNECTED WITHH SAID SEPARATING MEANS FOR DISCHARGING THE COARSE PARTICLES OF SUCH REMOVED GROUND ON THE SURFACE OF THE GROUND TO ONE SIDE OF THE MOUTH OF THE TRENCH; A FIRST DEPOSITING MEANS OPERATIVELY CONNECTED WITH SAID SEPARATING MEANS FOR DEPOSITING ON TTHE SURFACE OF THE GROUND ON THE OTHER SIDE OF THE MOUTH OF SAID TRENCH, A PILE OF SAID FINE PARTICLES
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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) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |