Ferromagnetic loop
US6864804B1 · kind B1 · utility
15Cited by
8References
64Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2002 |
| Grant date | Mar 8, 2005 |
| Priority date | — |
| Expiry date | May 6, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/015
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A ferromagnetic loop having a footprint characterized by a continuous wire shaped in a serpentine manner to form multiple contiguous polygons within the footprint for detection of moving vehicles. The footprint can be one of a triangle, a square, a rectangle, a rhombus, a parallelogram, an ellipse, or a circle. Similarly, each of the multiple contiguous polygons can be one of a triangle, a square, a rectangle, a rhombus, a parallelogram. Different design configurations for the ferromagnetic loop and methods for making and using the same are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.