Machine for the manufacture of elongate concrete building blocks
Abstract
Abstract A slide-mounting machine for moulding preferably elongate concrete elements, wherein the mould bottom consists of a flat bed over which at least one container holding concrete mixture is adapted to travel and the mould sides consist of two forming surfaces, one being formed by a vertically positioned feeder band being rolled out in synchrony with the speed of advancement of the container, and the opposite forming surface being formed by a wall moving together with said container and vibrating in the lateral direction to compact the concrete mixture dispensed in the space or mould proper formed by said two moulding surfaces. The invention also relates to a method of manufacturing elongate objects of concrete while using the slide-moulding technique, said method being performed by discharging concrete from the one or several continuously advancing containers down onto the flat bed forming the mould bottom and vibrating the concrete to form a layer having parallel longitudinal edges and a smooth upper surface, wherein said layer is being formed between the feeder band and the forming wall positioned laterally relatively thereto and advancing together with said container, and by compacting said concrete being discharged between said band and said shaping wall.
Inventors
- 👤 S Nilsson
Bibliographic Details
Claims Analysis
Total Claims: 8References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |