Patent US3292379A successfully refreshed from Google Patents.
US3292379A
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Pipe laying apparatus
Assignee: Individual
•
Filing: 1962-03-05
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Granted: 1966-12-20
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Expires: 1982-03-05
Abstract
No abstract record available.
Inventors
- 👤 James L Mcelvany
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:12
CPC Classifications
E; E02; E02F; E02F7/00; E02F7/02; E02F5/00; E02F5/02; E02F5/10; E02F5/12; E02F5/14; E02F5/145; F; F16; F16L; F16L1/00; F16L1/024; F16L1/028; F16L1/036
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
123 words
IN PIPE LAYING APPARATUS, THE COMBINATION COMPRISING: A TRENCH DIGGING MACHINE; A PIPE LAYING CRIB PIVOTED TO THE REARWARD END OF SAID MACHINE; RECIPROCABLE MEANS IN SAID CRIB FOR ENGAGING THE END OF A PIPELINE TO MAINTAIN THE SAME LONGITUDINAL COMPRESSION; ELEVATOR MEANS IN SAID CRIB FOR ADJUSTING THE VERTICAL POSITION OF SAID RECIPROCABLE MEANS IN SAID CRIB; MEANS TO ADJUST THE ANGULAR POSITION OF SAID CRIB ABOUT SAID PIVOT; A PLOW BLADE MOUNTED ON SAID CRIB AT THE FORWARD LOWER END THEREOF IN A POSITION SUCH THAT THE LOWER END OF SAID PLATE PROECTS EXTERIORLY OF SAID CRIB; AND MEANS FOR ADJUSTING THE VERTICAL POSITION OF SAID BLADE TO CONTROL THE POSITION OF SAID CRIB IN THE TRENCH WITHIN NARROW VERTICAL LIMITS.
References Cited (Backward Citations)
US915963A
Cited
US1817367A
Cited
US2384466A
Cited
US2656800A
Cited
US2738745A
Cited
US2830548A
Cited
US2898687A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |