Device for measuring dimensions by pneumatic means

Details Device for measuring dimensions by pneumatic means Device for measuring dimensions by pneumatic means

1992-06-24

1993-07-20

Williams, Hezron E.

Measuring and testing

With fluid pressure

Dimension, shape, or size

73 379, G01B 1300

Patent

active

052283283

ABSTRACT:
The device comprises a source of gas under pressure, a measurement branch connected to the source of gas under pressure and including a feed nozzle and a measurement member, a measurement pressure sensor connected to the measurement branch between the feed nozzle and the measurement member, and an absolute pressure sensor connected to the source of gas under pressure and having an input connected to a reference electricity source and an output connected to an input of a differential amplifier having another input connected to the reference electricity source and an output connected to the power supply terminal of the measurement pressure sensor.

REFERENCES:
patent: 3065628 (1962-11-01), Gesell
patent: 4088009 (1978-09-01), Fukuda
patent: 4538449 (1985-09-01), Wegmann et al.
patent: 5163232 (1992-11-01), Gonzales, Jr. et al.
Patent Abstracts of Japan vol. 11, No. 5 (P-533) (2452) Jan. 8, 1987 and JP-A-61 184 410 (Shiba Kazuo) Aug. 18, 1986.
Patent Abstracts of Japan vol. 6, No. 258 (P-163) (1136) Dec. 17, 1982 and JP-A-57 153 207 (Izuka Hiromichi) Sep. 21, 1982.

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