System for calculating and reporting slump in delivery vehicles
US8118473B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2005 |
| Grant date | Feb 21, 2012 |
| Priority date | — |
| Expiry date | Jul 4, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB28C7/12
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A system for calculating and reporting slump in a delivery vehicle having a mixing drum (14) and hydraulic drive (16) for rotating the mixing drum, including a rotational sensor (20) configured to sense a rotational speed of the mixing drum, a hydraulic sensor (22) coupled to the hydraulic drive and configured to sense a hydraulic pressure required to turn the mixing drum, and a communications port (26) configured to communicate a slump calculation to a status system (28) commonly used in the concrete industry, wherein the sensing of the rotational speed of the mixing drum is used to qualify a calculation of current slump based on the hydraulic pressure required to turn the mixing drum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.