Multi-depth deflectometer and method
US6386044B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 29, 1999 |
| Grant date | May 14, 2002 |
| Priority date | — |
| Expiry date | Oct 29, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B5/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A multi-depth deflectometer provides use and fabrication advantages. It is comprised of a head member that normally is disposed at the very mouth of a bore hole, an elongated tail member extending down through the bore hole. Displacement transducers are removably positioned within the head member which can be opened from the surface. The transducers can be easily placed in or removed by hand. The first trackings of subsurface deflections are done through mechanical deflection anchors located at desired measuring levels within the tail member. The deflection anchors have transverse-bite actuators and are each separately in vertical-actuation communication with one of the transducers. A method of implementing the MDD reflects the use and fabrication advantages also.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.