Method for testing the abrasion property and measuring friction coefficient of circumferential surface of cylindrical object and apparatus for the same
US5542281A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 1, 1995 |
| Grant date | Aug 6, 1996 |
| Priority date | — |
| Expiry date | May 1, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/0296
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention relates to a method and an apparatus for testing the surface properties, i.e., abrasion property, friction coefficient, lubrication property, etc., of cylindrical object, e.g., VTR head drums, photocopier or laser printer drums, sewing machine spindles, fishing rod reels, etc. The apparatus of the present invention provides: a mounting means upon which a specimen of cylindrical object and a relative specimen of a flexible material is mounted and which can measure tension; a motor control unit which is connected to said mounting means so as to enable control; an amplifier electrically connected to a tension meter of said mounting means; and a computer, electrically connected to said amplifier and said motor control unit, which has been programmed to record at timed intervals the motor rotation speed and the estimated tension values, and organizes and controls all of the above said parts. Further, said mounting means including a motor where cylindrical specimen is positioned and whose revolution may be accurately controlled; a tension meter wherein each end of said relative specimen is mounted where said relative specimen is wrapped around said specimen so that …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.