Rheometer die assembly
US4953406A · kind A · utility
8Cited by
2References
20Claims
0Family size
Inventor
Key dates
| Filing date | Oct 2, 1989 |
| Grant date | Sep 4, 1990 |
| Priority date | — |
| Expiry date | Oct 2, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/445
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A rheometer die assembly includes a lower oscillating or rotating die adapted for engagement with a stationary upper die. The lower die has an O-ring circumferentially positioned about a top surface thereof and in alignment with an annular planar sealing surface in the upper die. Engagement between the sealing surface and the O-ring defines a cavity between the two dies. A groove about a circumferential edge surface of the lower die is exposed when that die is received in a holder, such groove accepting the insertion of a tool for removing the die from the holder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.