Guarded ring tensioned thickness standard

Details Guarded ring tensioned thickness standard Guarded ring tensioned thickness standard

1987-06-17

1988-04-19

Levy, Stewart J.

Measuring and testing

Instrument proving or calibrating

Volume of flow, speed of flow, volume rate of flow, or mass...

G01R 3500

Patent

active

047381310

ABSTRACT:
A guarded ring tensioned thickness standard for use with coating thickness gages includes a ring formed of a first material having a coefficient of thermal expansion which is less than the coefficient of thermal expansion of a second material from which a diaphragm is formed. The diaphragm is bonded to the ring at a temperature which is elevated with respect to room temperature so that after the standard has cooled to room temperature, the diaphragm is supported in tension on the ring. The diaphragm is formed of a thickness corresponding to the estimated thickness of a coating to be measured and may be used both in the calibration of a coating thickness gage and in the actual measurement of uncured powdered coatings.

REFERENCES:
patent: 4150288 (1979-04-01), Inoue et al.
patent: 4160208 (1979-07-01), Steingroever et al.
patent: 4567436 (1986-01-01), Koch
patent: 4646341 (1987-02-01), Finer et al.

Affiliated with

Also associated with

Rating

Guarded ring tensioned thickness standard does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Guarded ring tensioned thickness standard, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Guarded ring tensioned thickness standard will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2168985