Device for marking out buried objects
US8981903B2 · kind B2 · utility
2Cited by
4References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 5, 2010 |
| Grant date | Mar 17, 2015 |
| Priority date | — |
| Expiry date | Mar 6, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C15/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for marking the location of a buried object in which the location of the buried object is determined and a barhole driver or plunger bar having a detachable plug element and a marking material for marking the location of the buried object is driven into the ground proximate the location of the buried object. The detachable plug element detaches from the plunger bar as the plunger bar is removed from the ground, leaving a substantially continuous path of the marking material in the ground extending substantially continuously from proximate the detachable plug element to the ground surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.