Self-contained laser-activated depth sensor for excavator
US4884939A · kind A · utility
28Cited by
18References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 28, 1987 |
| Grant date | Dec 5, 1989 |
| Priority date | — |
| Expiry date | Dec 28, 2007 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02F9/264
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A laser-actuated depth sensor for an excavator, including a laser receiver, an inclination sensor assembly and indicators to inform the operator of the position and inclination of the excavator stick, is completely self-contained in a housing that may be mounted to the stick of an excavator. The indicators, which are each an array of LEDs, and corresponding indicia are readily visible to the operator who does not have to take his or her eyes off the excavation work zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.