Pneumatic measuring device for measuring workpiece dimension

Details Pneumatic measuring device for measuring workpiece dimension Pneumatic measuring device for measuring workpiece dimension

1983-11-07

1985-09-03

Levy, Stewart J.

Measuring and testing

With fluid pressure

Dimension, shape, or size

G01B 1310

Patent

active

045384495

ABSTRACT:
A pneumatic measuring device is disclosed which comprises a pneumatic circuit containing a first branch (15) equipped with an inlet nozzle (16), oppositely disposed measuring nozzles (17) and a second branch (19) equipped with an inlet nozzle (20) and a reference nozzle (21). A differential pressure transducer (22) having a semiconductor element enables the difference in pressure between the branches (15) and (19) to be measured and to supply through a terminal (23) a signal representing the dimensions measured opposite the nozzles (17). The pneumatic circuit system, with the pressure transducer, is included in the measuring spindle (12).

REFERENCES:
patent: 2846871 (1958-08-01), Worthen
patent: 3065628 (1962-11-01), Gesell
patent: 3494078 (1970-02-01), Miyamoto
patent: 3513688 (1970-05-01), Thibault
patent: 4088009 (1978-05-01), Fukuda

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