Control system for a mobile material distribution device
US5911362A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 1997 |
| Grant date | Jun 15, 1999 |
| Priority date | — |
| Expiry date | Feb 26, 2017 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01C19/20
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A control system is provided for efficiently regulating the discharge of material from a mobile material distribution device having a product tank or bin, a boom with at least one boom section, a plurality of outlet ducts (e.g., nozzles and/or distribution ports) associated with each boom section, shut-off valves for selectively enabling each boom section, and a selectively-movable control valve for regulating the flow of material to the boom sections. The control system includes a boom sensing input for monitoring whether the shut-off valves are open or closed (i.e., whether the associated boom sections are enabled or disabled), and a processing system for maintaining a substantially stable pressure level between the control valve and each shutoff valve by positionally locking the control valve at its last controlled position upon receiving a signal from the boom sensing input indicating the shut-off valves are closed. Based information received from the boom sensing input, other feedback sensors, and/or manually entered by the user, the processing system selectively regulates the control valve of the material distribution device so as to precisely regulate the material dispersal …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.