Variable eccentric rheometer system
US6681617B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 2003 |
| Grant date | Jan 27, 2004 |
| Priority date | — |
| Expiry date | May 14, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/442
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for testing polymeric samples is shown in which a polymer specimen is subjected to sinusoidal, oscillatory motion. The oscillatory motion is generated by the use of a continuously variable eccentric cam that is affixed to a drive shaft rotated by a motor. The amplitude of oscillation is determined by the eccentricity of the cam, and verified by measurement of angular deflection. The eccentricity of the cam can be altered, in one embodiment, through the manual manipulation of an adjustable nut, and, in another, automated embodiment, through the motion of the rotating motor. The eccentricity of the cam is continuously variable and can quickly be changed within a single test.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.