Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
73 words
A transducer comprising: a coiled element of ferroelectric material; means, including a pair of electrodes spaced apart on a surface of said element and individually canted with respect to the centerline of said element, for inducing torsional stress about the coiled centerline of said element; and terminal means for coupling a signal source to the electrodes in said pair to create change in elongation of said coil in the direction of its axis.
Claim 2
Dependent Claim
73 words
A transducer comprising: a coiled element of ferroelectric material; means, including a pair of electrodes spaced apart on a surface of said element and individually canted with respect to the centerline of said element, for inducing torsional stress about the coiled centerline of said element; and terminal means for coupling a signal source to the electrodes in said pair to create change in elongation of said coil in the direction of its axis.
Claim 3
Dependent Claim
14 words
A transducer as defined in claim 1 in which said element form a helix.
Claim 4
Dependent Claim
14 words
A transducer as defined in claim 1 in which said element forms a spiral.
Claim 5
Dependent Claim
20 words
A transducer as defined in claim 1 including a sound reproducing element mechanically coupled to one end of said element.
Claim 6
Dependent Claim
43 words
A transducer as defined in claim 1 in which said pair of electrodes are spaced side-by-side and helically wound on said surface of said coiled element, and said terminal means serve to couple said signal source across the individual electrodes in said pair.
Claim 7
Dependent Claim
49 words
A transducer as defined in claim 5 in which the spacing between adjacent ones of said electrodes is substantially greater than the thickness of said element, the width of said electrodes is less than one-half said spacing, and said width is greater than or approximately equal to said thickness.
Claim 8
Dependent Claim
15 words
A transducer as defined in claim 5 in which said element is a hollow tube.
Claim 9
Dependent Claim
15 words
A transducer as defined in claim 5 in which said element is a ribbon-like strip.
Claim 10
Dependent Claim
40 words
A transducer as defined in claim 5 in which said element is composed of a pair of individual strips of ferroelectric material sandwiched about a ribbon of material exhibiting a dielectric constant substantially lower than that of said ferroelectric material.
Claim 11
Dependent Claim
17 words
A transducer as defined in claim 9 in which said ribbon is of an electrically insulating material.
Claim 12
Dependent Claim
62 words
A transducer as defined in claim 1 in which said element is composed of a pair of joined sections, additional pairs of said electrodes are spaced apart along said element with the individual electrodes of each pair being symmetrically disposed on respective ones of said sections, and said terminal means serve to couple said signal source between adjacent ones of said pairs.
Claim 13
Dependent Claim
35 words
A transducer as defined in claim 11 in which the respective electrodes in each of said pairs embrace oppositely poled portions of said sections, the individual electrodes in each of said pairs being mutually connected.