Portable concrete mixer with weigh/surge systems
US5667298A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 16, 1996 |
| Grant date | Sep 16, 1997 |
| Priority date | — |
| Expiry date | Jan 16, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB28C5/2018
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An improved concrete mixing plant is mounted on several mobile chassis to provide portability. The plant includes a horizontally oriented, internally urethane coated mixing drum having spiral and lift flights such that the rate of discharging concrete material is controllable without altering the direction or rate of rotation. The drum and chute are self-erecting from a low-profile, transport configuration to an elevated, mixing configuration. A water dispensing system wherein the water is automatically measured volumetrically or, alternatively, gravimetrically provides automatic cleaning of internal surfaces of the mixing drum as an integral part of the batching process. Feeder belt and weigh-bridge arrangements are interposed between bins containing denser ingredients and a collecting conveyor to provide a first surge capability. A hopper and load cell arrangement is interposed between a compartmented silo and a surge conveyor to provide a further surge capability. A ploughing arrangement places lighter ingredients within a furrow in the denser ingredients to minimize generation of airborne particulate matter within the surge conveyor. A baghouse filter and blower arrangement cre…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.