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US 4,203,317 AGranted
Porosimeter
OwnerKrishna M. Guptainventor
Life of this patent
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Abstract
A porosimeter comprises a tube of non-magnetic material connected at one end to a sample chamber capable, like the tube, of withstanding high internal pressures, means to exhaust the sample chamber and tube, means to fill the chamber and tube with mercury, means to deliver to the tube under adjustable pressure a fluid of density different from that of mercury, a float of magnetic material and of intermediate density disposed in the tube, and a differential transformer in which the float acts as a core to indicate the position of the float.
Claims20
A porosimeter comprising, in combination:
- (a) an opaque, sample chamber constructed of metal for holding a sample of material whose porosity is to be measured;
- (b) an opaque, non-horizontal tube constructed of metal having an upper end and a lower end, the lower end of said tube being connected to said chamber;
- (c) means connected to said tube for filling said chamber and said tube with a liquid which is non-wettable with respect to said sample;
- (d) means connected to said upper end of said tube for applying a fluid at various pressures to the upper end of said tube, said fluid having a lower density than said liquid;
- (e) means for measuring the height of the upper of said liquid in said tube during application of said various pressures;
- whereby the porosity of said sample in said chamber may be determined from the height measurements and the respective, various pressures.
3 more elements
Dependencies are inferred from the claim text.