Finned sleeve for driven type survey monuments
US5148641A · kind A · utility
34Cited by
10References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 21, 1991 |
| Grant date | Sep 22, 1992 |
| Priority date | — |
| Expiry date | Jun 21, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C15/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sleeve is provided for a driven-type survey monument having a penetrating point and cylindrical rod sections to stabilize the monument in the ground. The sleeve has an elongated body having a hollow bore, which receives a first portion of the survey monument, and a plurality of fins formed integrally with and extending outwardly from the elongated body of the sleeve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.