Gravimetric cup

Details Gravimetric cup Gravimetric cup

1998-08-03

1999-11-16

Brock, Michael

Measuring and testing

With fluid pressure

Porosity or permeability

73 6447, 73 73, 73866, G01N 1508, G01N 2746, G01M 326

Patent

active

059837080

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.

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patent: 4715212 (1987-12-01), Johanson
patent: 4862730 (1989-09-01), Crosby
patent: 4918981 (1990-04-01), Gore

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