Measuring and testing – Moisture content or absorption characteristic of material
Patent
1975-05-28
1977-04-26
Ruehl, Charles A.
Measuring and testing
Moisture content or absorption characteristic of material
73194A, G01N 2900
Patent
active
040193730
ABSTRACT:
An ultrasonic transducer apparatus for sensing flow velocity through a pipe wall has a pair of strap-on transducer assemblies for securing to an unprepared pipe surface, the energy coupling between each transducer unit and the pipe or other working device being provided by an elastomeric contact pad, which also facilitates rapid replacement of the transducer crystal, by simplified assembly.
REFERENCES:
patent: 3242723 (1966-03-01), Evans
patent: 3394586 (1968-07-01), Cross
patent: 3580092 (1971-05-01), Scarpa
patent: 3663842 (1972-05-01), Miller
patent: 3789656 (1974-02-01), Miller
Flemons Ralph Seymour
Freeman David Lewis
Canadian General Electric Company Limited
Eckersley R. A.
Ruehl Charles A.
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