Sonic transducer employing rigid radiating member
OwnerLester M. Barcus, John F. Berryinventors
Life of this patent
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Abstract
A sonic transducer incorporating a rigid plate-like transmitting member coupled to electromechanical compression wave generating means such as a piezoelectric crystal for transmitting sonic energy in a medium. The transmitting means is damped to prevent ringing, and the transducer is particularly responsive to the high frequency audio spectrum.
Claims24
A sonic transducer for transmitting sonic signals in a medium comprising:
- piezoelectric sonic energy generating means, said generating means having opposed generally planar electrodes,
- sonic energy transmitting means, said transmitting means being sheet-like and rigid and substantially incapable of flexural and diaphragm-like movement,
- coupling means for coupling said generating means to said transmitting means,
- said coupling means coupling said generating means to said transmitting means with said electrodes of said generating means oriented principally parallel to the general plane of said sheet-like transmitting means, and
- means for damping the natural resonant frequencies of said transmitting means.
A sonic transducer for transmitting sonic signals in a medium comprising:
- compression wave generating means,
- transmitting means, said transmitting means being rigid, substantially incapable of flexural and diaphragm-like movement and being sheet-like and generally flat, said transmitting means comprising glass,
- coupling means for coupling said generating means to said transmitting means,
- means for damping the natural resonant frequencies of said transmitting means, and
- said damping means being sheet-like and generally flat and comprising a rigid wooden body adhesively secured to said transmitting means.
A sonic transducer for transmitting sonic signals in a medium comprising:
- compression wave generating means,
- transmitting means, said transmitting means being rigid and substantially incapable of flexural and diaphragmlike movement, said transmitting means being generally curved,
- coupling means for coupling said generating means to said transmitting means, and
- means for damping the natural resonant frequencies of said transmitting means.
A speaker system for radiating sonic energy into a medium and for use with an audio amplifier supplying electronic audio signals comprising:
- a. compression wave generating means,
- b. means for transmitting sonic energy into said medium, said transmitting means being rigid and substantially incapable of flexural movement,
- c. coupling means for coupling said generally means to said transmitting means,
- d. means connected to said transmitting means for damping gross vibrations of said transmitting means associated with natural resonant frequencies of said transmitting means,
- e. an air core transformer having a primary winding connected to receive said audio signals, said transformer having a secondary winding connected to said compression wave generating means,
- f. a diaphragm-type woofer speaker connected in parallel with said primary winding of said air core transformer, and
- g. capacitor means connected in series with said primary winding of said air core transformer.
A speaker system for radiating sonic energy into a medium and for use with audio amplifier supplying electronic audio signals comprising:
- a. compression wave generating means,
- b. means for transmitting sonic energy into said medium, said transmitting means being rigid and substantially incapable of flexural movement,
- c. coupling means for coupling said generating means to said transmitting means,
- d. means connected to said transmitting means for damping gross vibrations of said transmitting means associated with natural resonant frequencies of said transmitting means, and
- e. an air core transmformer having a primary winding connected to receive said audio signals, said transformer having a secondary winding connected to said compression wave generating means.
Dependencies are inferred from the claim text.