Specific density detector
US7511831B2 · kind B2 · utility
0Cited by
8References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 14, 2004 |
| Grant date | Mar 31, 2009 |
| Priority date | — |
| Expiry date | Apr 1, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V7/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An object is placed at a particular distance away from the nonreflecting side of a mirror, such that the gravitational force of the object affects the mirror. A laser is then pointed at the opposite, reflecting side of the mirror, thereby itself reflecting off the mirror and going back in to the cavity of the laser, creating a mode-hopping effect. The mirror will be affected by three forces, the force of a spring (FS), the force of a modulating signal (FMS), created by an electro mechanical device attached to the mirror, and the gravitational force of objects as they approach and recede away from the mirror.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.