Concrete moulding apparatus
US4936763A · kind A · utility
23Cited by
5References
18Claims
0Family size
Inventor
Key dates
| Filing date | May 11, 1988 |
| Grant date | Jun 26, 1990 |
| Priority date | — |
| Expiry date | May 11, 2008 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01C19/4893
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Concrete moulding apparatus (10) is provided which has a mould (19) through which concrete is extruded from a hopper (17) by the action of a pusher plate (22) reciprocating in the hopper (17) towards and away from the mould entrance (20). The pusher plate (22) is arranged to pivot during reciprocation to cause excess material forced towards the mould entrance (20) to be squeezed upwardly back into the hopper (17).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.