Apparatus for producing concrete pipe
Abstract
Abstract AN IMPROVED APPARATUS FOR FORMING HOLLOW CYLINDRICAL BODIES OF REINFORCED CONCRETE AT A POURING STATION AND INCLUDING A BOTTOM PALLET, A PALLET SADDLE, AN OUTER JACKET, A CORE MOUNTED CONCENTRICALLY WITHIN THE SPACED FORM SAID OUTER JACKET, MEANS IS FEED CONCRETE INTO THE SPACE BETWEEN SAID CORE AND SAID JACKET, AND A TOP PALLET HOLDING HEADER. VIBRATORS ARE PROVIDED ON THE JACKET, CORE AND HEADER TO VIBRATE THE CONCRETE AS THE MOLD IS FILLED. ALL OF THE APPARATUS IS ABOVE GROUND WITH THE JACKET, CORE, AND HEADER BEING VERTICALLY MOVABLE IN SEQUENCE TO FORM A MOLD FOR MAKING THE REINFORCED CONCRETE PIPE. THE BOTTOM ENDS OF THE JACKET AND CORE COOPERATE WITH SEALING MEANS INCORPORATED IN THE PALLET SADDLE TO SEAL THE BOTTOM OF THE MOLD LIQUID TIGHT.
Inventors
- 👤 Carl R Joelson
Bibliographic Details
Claims Analysis
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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) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |