Gravimetric cup
US5983708A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 3, 1998 |
| Grant date | Nov 16, 1999 |
| Priority date | — |
| Expiry date | Aug 3, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N5/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A gravimetric cup for containing a liquid sample to be measured for moisture or vapor transmission loss therefrom, such gravimetric cup having a lower cup body and a cover, the cover having an outer edge rim alignable with an upper edge rim of the cup for mounting a film membrane thereacross, and the cover having radial, upwardly curved ribs extending between the outer edge rim and a center hub region so as to provide an evenly distributed clamping force upon the membrane. The cup body has a pair of upwardly projecting posts, each having an engagement channel. A clamping bar has slotted ends for engaging against the respective post engagement channels, and a center threaded hole for receiving the threaded shank of a tightening knob that applies downward force to the cover.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.