Device for measuring change in profile height of articles

Details Device for measuring change in profile height of articles Device for measuring change in profile height of articles

1991-05-21

1993-02-09

Williams, Hezron E.

Measuring and testing

With fluid pressure

Dimension, shape, or size

73105, G01B 520

Patent

active

051845032

ABSTRACT:
A height profile measuring device operated by air flow through a nozzle and directed at the surface of the profile which is to be measured. The device has a support which allows the device to move in one plane while measurement takes place and an indicator operating upon a change in characteristic of the air flow, dependent upon nozzle distance from the surface, is provided to provide information relating to profile change. The device is useful for measuring the height of conductor elements on a printed circuit board.

REFERENCES:
patent: 4179919 (1979-12-01), McKechnie
patent: 4206633 (1980-06-01), McKechnie et al.
patent: 4397078 (1983-08-01), Imahashi
patent: 4560924 (1985-12-01), Norberg
Hoekstra, J. Noncontacting Surface Height Gage. In IBM Tech. Discl. Bulletin, vol. 14 No. 2 pp. 585-586, Jul. 1971.

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