Pressure-measuring sheet

Details Pressure-measuring sheet Pressure-measuring sheet

1977-08-12

1979-01-02

Gill, James J.

Measuring and testing

Volumetric content measuring

428307, G01L 100

Patent

active

041321120

ABSTRACT:
A pressure-measuring sheet comprising a support having thereon a layer of microcapsules containing an electron-donating color former capable of forming a color on contact with an electron-accepting color developer, the microcapsules comprising a mixture of at least two groups of microcapsules having different ratios .delta./D of the number average wall thickness .delta. of the microcapsules to the volume average particle diameter D of the microcapsules and having a Ps value difference of about 50 to about 1,000 kg/cm.sup.2. Various planar and linear pressures and the distributions thereof can be measured by the pressure-measuring sheet utilizing changes in the densities of colors formed upon the application of pressures to the microcapsule layer because the color density changes are directly related to the pressures applied.

REFERENCES:
patent: 3469439 (1969-09-01), Roberts et al.
patent: 4002060 (1977-01-01), Ogata et al.
patent: 4055358 (1977-10-01), Garner et al.

Affiliated with

Also associated with

Rating

Pressure-measuring sheet does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pressure-measuring sheet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pressure-measuring sheet will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1512116