Process for determining and indicating the degree of ground compacting attained during work with a ground compacter
US5415494A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 17, 1994 |
| Grant date | May 16, 1995 |
| Priority date | — |
| Expiry date | Mar 17, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/0076
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of determining and displaying during operation an actual degree of soil compaction achieved with a soil compacting device includes the steps of driving the soil compaction device with a motor and compacting the soil with the soil compacting device. The motor is secured against surpassing a predetermined maximum rpm limit by providing a protective rpm limiting circuit. The ignition impulse is delayed with the protective rpm limiting circuit, when the predetermined maximum rpm limit is surpassed. Within a time interval the average of the delay of the ignition impulse is determined as a base value for a display value of the actual degree of compaction. For a large surface area to be compacted it is possible to compact the soil within a test portion to the desired degree of compaction and save the corresponding display value as a reference value to be used during compaction of the remaining portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.