Boots – shoes – and leggings
Patent
1985-12-31
1988-06-21
Lall, Parshotam S.
Boots, shoes, and leggings
364507, 73625, 73632, 370112, G01N 2904
Patent
active
047528958
ABSTRACT:
Ultrasonic inspection apparatus includes a linear array of transmitting transducers and a linear array of receiving transducers providing TTU mode ultrasonic inspection. One to four transmitting transducers may be simultaneously pulsed as a group, and one to four receiving transducers may be simultaneously connected in common in a group by operation of a connection circuit. The connection circuit includes a plurality of multiplexer circuits having their signal inputs connected in common to respective receiving transducers and their address terminals connected to the data output terminals of programmable read only memory devices.
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Lall Parshotam S.
The Boeing Company
Trans V. N.
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