Impact gauge
US4237736A · kind A · utility
33Cited by
21References
13Claims
0Family size
Inventor
Key dates
| Filing date | Jul 19, 1979 |
| Grant date | Dec 9, 1980 |
| Priority date | — |
| Expiry date | Jul 19, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P15/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Upon impact, a ball is released and radially displaced into an annular space of decreasing thickness. Simultaneously, the ball releases a fluid to an absorbent material. The direction and distance of displacement indicate the direction and magnitude of the impact, and the subsequent migration of the fluid in the absorbent material indicates the elapsed time since the impact.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.