Device for measuring the deformation of a material under the influence of heat and its application to the determination of the wetting power of pitches
US4426160A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 29, 1981 |
| Grant date | Jan 17, 1984 |
| Priority date | — |
| Expiry date | Dec 29, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N25/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for optically making physical measurements of materials which deform upon application of heat thereto. The device comprises a source of light, an at least partly transparent chamber having a heating source which can be programmed to operate as a function of time, and with a porous support designed to support a deformable material within the chamber. A photo-electric receiver 5 and an optical lens 7 are also provided for imaging of the material during deformation on the photo-electric receiver. In order to perform the imaging, the source of light, the porous support, the photo-electric receiver and the optical lens 7 are optically aligned. In a specific application, the apparatus can be used to determine the wetting power of pitches.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.