Apparatus for securing a land surveyor'S mark based on the use of a radio frequency identifier tag
US8289167B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2007 |
| Grant date | Oct 16, 2012 |
| Priority date | — |
| Expiry date | Feb 22, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C15/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A surveyor's mark and a method for forming the mark. The mark includes a stick and a head assembled to the stick. The stick is configured to be planted in a ground and the head is configured to be above the ground. The head includes a tag having an identification number. The identification number has a value which is a first code value. The stick includes a thin wire configured as an electrical conducting loop and connected to the tag. If the stick is planted in the ground and the head is above the ground, then pulling the head in an attempt to pull up the mark from the ground results in the head being disassembled from the stick and the thin wire breaking so as to open the loop which changes the value of the identification number from the first code value to a second code value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.