Self-leveling laser assembly
US3936197A · kind A · utility
46Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 6, 1974 |
| Grant date | Feb 3, 1976 |
| Priority date | — |
| Expiry date | May 6, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/64
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Self-leveling light beam projection apparatus for projecting and maintaining a beam of light along a predetermined path relative to the earth's vertical. A housing adapted for mounting in a predetermined plane includes a light source such as a laser generator for generating a collimated beam of light. A lens system including a pendulum mounting at least one lens is mounted for movement about mutually perpendicular axes to seek the vertical and to maintain the projected beam along the predetermined path despite the relative positions of the housing and light source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.