Projection apparatus for demarcation
US6618950B2 · kind B2 · utility
6Cited by
11References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 26, 2001 |
| Grant date | Sep 16, 2003 |
| Priority date | — |
| Expiry date | Dec 26, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S33/21
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A projection apparatus has a frame having a top seat, a main body and a light source module. The main body includes a hanging mechanism that is pivotable about the top seat with respect to a first axis direction and a second axis direction, and a connection seat having an adjustment mechanism that is coupled to the hanging mechanism in a manner that allows for adjustment of the inclination angle between the connection seat and the hanging mechanism. The light-source module is coupled to the connection seat and projects a light plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.