Communications – electrical: acoustic wave systems and devices – Signal transducers – Underwater type
Patent
1997-08-08
1999-08-03
Pihulic, Daniel T.
Communications, electrical: acoustic wave systems and devices
Signal transducers
Underwater type
F24F 314
Patent
active
059333901
ABSTRACT:
A method for reducing the accumulation of impurities on the vibrating surface of an ultrasonic transducer includes the steps of immersing the transducer in a liquid and orienting the vibrating surface of the transducer at an oblique angle to the liquid surface. At least one immersed acoustic mirror is oriented opposite the vibrating surface such that the ultrasonic waves originating at the transducer vibrating surface are reflected by the mirror and directed to the liquid surface at a predetermined angle.
REFERENCES:
patent: 4612777 (1986-09-01), Noma et al.
patent: 5038611 (1991-08-01), Weldon et al.
Gorenstein Eli
Riftin Alex
Rosner Zeev
Shoham Yacov
Green Clouds Ltd.
Pihulic Daniel T.
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