Directional indicator
US5367781A · kind A · utility
3Cited by
9References
3Claims
0Family size
Inventor
Key dates
| Filing date | Aug 18, 1993 |
| Grant date | Nov 29, 1994 |
| Priority date | — |
| Expiry date | Aug 18, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C17/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A directional indicator made to fasten around the wrist for guiding the user in a predetermined direction, including a magnetized needle attached rotating dial balanced on a pointed pin inside a casing, a needle pointer fastened to a center shaft on the rotating dial, a convex lens covered on the casing over the rotating dial and marked with a fluorescent mark, whereby the needle pointer is maintained in alignment with the fluorescent mark to guide the user toward the predetermined direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.