Automatic control system for maintaining blade in predetermined relationship to laser beam
US4273196A · kind A · utility
62Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 11, 1979 |
| Grant date | Jun 16, 1981 |
| Priority date | — |
| Expiry date | May 11, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S37/907
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A beam receiver secured to an upper portion of a blade of an earth working equipment can rotate in a horizontal plane and move in a vertical direction and, accordingly, can catch a laser beam from a beam projector regardless of a direction of the equipment. When the beam has been deviated out of the beam receiver, the direction of the deviation is detected so that the beam can be received by the beam receiver again. The height of the beam receiver relative to the blade can be adjusted and the level of the blade can thereby be controlled very accurately.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.