Concrete mixing apparatus
US4285598A · kind A · utility
11Cited by
7References
14Claims
0Family size
Inventor
Key dates
| Filing date | Dec 10, 1979 |
| Grant date | Aug 25, 1981 |
| Priority date | — |
| Expiry date | Dec 10, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB28C9/0454
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A concrete mixing machine is disclosed which mixes small batches of concrete using any desired ratio of gravel, sand, cement, and water. The dry materials are mixed into concrete at the site where the concrete is to be poured. The apparatus includes hoppers for storing the dried mix material, a water tank, a metering slide for measuring desired amounts of cement, sand, and gravel to the desired proportions; a mixing, feeding, and dispensing system; and a hydraulic system for driving the mixing apparatus. The hydraulic drive system is utilized to overcome the binding which occurs when residual concrete begins to set.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.