Patent US3091013A successfully refreshed from Google Patents.
US3091013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for forming monolithic pipe
Assignee: Individual
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Filing: 1960-12-27
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Granted: 1963-05-28
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Expires: 1980-12-27
Abstract
No abstract record available.
Inventors
- 👤 Mott L Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:43
CPC Classifications
F; F16; F16L; F16L1/00; F16L1/024; F16L1/028; F16L1/038
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
IN A PIPE FORMING APPARATUS ADAPTED TO PRODUCE CONTINUOUS CONCRETE PIPE IN A DITCH HAVING A SUBSTANTIALLY SEMI-CYLINDRICAL BOTTOM PORTION THE COMBINATION OF A FRAME MOVABLE IN AND ALONG SAID DITCH, MEANS ON SAID FRAME FOR GUIDING SAID APPARATUS IN SAID DITCH, A HEAD ROTATABLY SUPPORTED ON SAID FRAME, THE AXIS OF ROTATION OF SAID HEAD EXTENDING PARALLEL TO SAID DITCH, A SEMICYLINDRICAL TOP HALF FORM OF SUBSTANTIALLY THE SAME DIAMETER AS THE DITCH BOTTOM PORTION, SAID TOP HALF FORM BEING SECUED TO SAID FRAME SPACED ABOVE SAID HEAD, A PLURALITY OF ROLLERS ROTATABLY SUPPORTED ON SAID HEAD, SAID ROLLERS PRESENTING PERIPHERAL SURFACES EXTENDING RADIALLY OUTWARDLY OF SAID HEAD AND ADAPTED TO DEVELOP DURING SAID HEAD ROTATION A SECTION DEFINING A PORTION OF THE LEADING EDGE OF THE PIPE, AND MEANS FOR DELIVERING CONCRETE TO SAID ROLLERS.
Claim 2
Dependent Claim
137 words
IN A PIPE FORMING APPARATUS ADAPTED TO PRODUCE CONTINUOUS CONCRETE PIPE IN A DITCH HAVING A SUBSTANTIALLY SEMI-CYLINDRICAL BOTTOM PORTION THE COMBINATION OF A FRAME MOVABLE IN AND ALONG SAID DITCH, MEANS ON SAID FRAME FOR GUIDING SAID APPARATUS IN SAID DITCH, A HEAD ROTATABLY SUPPORTED ON SAID FRAME, THE AXIS OF ROTATION OF SAID HEAD EXTENDING PARALLEL TO SAID DITCH, A SEMICYLINDRICAL TOP HALF FORM OF SUBSTANTIALLY THE SAME DIAMETER AS THE DITCH BOTTOM PORTION, SAID TOP HALF FORM BEING SECUED TO SAID FRAME SPACED ABOVE SAID HEAD, A PLURALITY OF ROLLERS ROTATABLY SUPPORTED ON SAID HEAD, SAID ROLLERS PRESENTING PERIPHERAL SURFACES EXTENDING RADIALLY OUTWARDLY OF SAID HEAD AND ADAPTED TO DEVELOP DURING SAID HEAD ROTATION A SECTION DEFINING A PORTION OF THE LEADING EDGE OF THE PIPE, AND MEANS FOR DELIVERING CONCRETE TO SAID ROLLERS.
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) | 1966-05-27 | 1966-11-26 | 1967-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-27 | 1970-11-26 | 1971-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-27 | 1974-11-26 | 1975-05-28 | $7700.00 | Window Closed / Lapsed |