Dynamic coefficient of friction measuring device having a track with an arcuate portion
US8146402B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2007 |
| Grant date | Apr 3, 2012 |
| Priority date | — |
| Expiry date | Dec 17, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N19/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention provides a device for measuring the dynamic coefficient of friction of a surface. The device includes a track having an arcuate portion which is shaped to mimic an arc of travel of a pendulum; a shoe mounted so as to be movable along the track, and a biasing device for biasing part of the shoe into contact with the surface as it moves along the arcuate portion of the track; a propulsion device for providing an initial propulsion force to propel the shoe along the track; a velocity detector for measuring the velocity of the shoe at a plurality of points during its travel along the track; and computing device for calculating the coefficient of friction from changes in velocity of the shoe as it moves along the track.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.