Hollow surveying retroreflector assembly
US5122901A · kind A · utility
28Cited by
6References
42Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 24, 1991 |
| Grant date | Jun 16, 1992 |
| Priority date | — |
| Expiry date | Jan 24, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C15/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A hollow surveying retroreflector assembly is provided which is comprised of a hollow retroreflector received within and adhered to a receptacle. The retroreflector has three plates having optically flat reflecting faces disposed at right angles to each other. The receptacle has a conically configured interior for receiving the retroreflector and for maintaining the perpendicular alignment of the reflecting faces of the plates of the retroreflector. The receptacle having the retroreflector inside is then received within an outer casing to allow for mounting of the hollow surveying retroreflector assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.