Control system for machine that cleans drums of ready mixed concrete trucks
US8301306B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2010 |
| Grant date | Oct 30, 2012 |
| Priority date | — |
| Expiry date | Apr 27, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB08B3/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A control apparatus for an apparatus that cleans the drum of a ready mixed concrete truck includes a CAN-bus control system that includes a nozzle lance position encoder, a boom position encoder, a human-machine interface, a programmable logic controller, and monitors for an engine, hydraulic valves, and pressure sensors. The nozzle lance position encoder includes a rotary encoder, a bi-directional motor, a nozzle lance including a nozzle adapted to discharge water under high pressure, and a swivel assembly to which the nozzle lance is mounted for reciprocating motion. The programmable logic controller enables an operator to control the range of oscillation of the nozzle lance by inputting a desired range of oscillation into the programmable logic controller. An operator can also control extension and retraction of an elongate boom by inputting a desired rate of extension and retraction into the programmable logic controller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.