Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
78 words
An ultrasonic phase reversal zone plate focusing transducer comprising, a transducer body of piezoelectric material uniformly polarized in a direction normal to opposite body surfaces, a plurality of radially spaced concentric electrodes on the opposite body surfaces with electrodes on one surface overlapping portions of adjacent electrodes on the opposite surface, and means for electrically connecting to inner and outer most electrodes for the provision of adjacent opposite phase active zones across the transducer body and transducer focusing.
Claim 2
Dependent Claim
78 words
An ultrasonic phase reversal zone plate focusing transducer comprising, a transducer body of piezoelectric material uniformly polarized in a direction normal to opposite body surfaces, a plurality of radially spaced concentric electrodes on the opposite body surfaces with electrodes on one surface overlapping portions of adjacent electrodes on the opposite surface, and means for electrically connecting to inner and outer most electrodes for the provision of adjacent opposite phase active zones across the transducer body and transducer focusing.
Claim 3
Dependent Claim
31 words
The ultrasonic phase reversal zone plate focusing transducer as defined in claim 1 wherein, said transducer body is cylindrically shaped with parallel opposite body surfaces upon which said electrodes are disposed.
Claim 4
Dependent Claim
63 words
The ultrasonic phase reversal zone plate focusing transducer as defined in claim 1 wherein, said electrodes include a pair of central coaxially located circular different-diameter electrodes on opposite body surfaces and different-diameter annular electrodes surrounding said cnetral electrodes, and said means for electrically connecting to inner and outer most electrodes includes means for connecting to the smallest of the different diameter central electrodes.
Claim 5
Dependent Claim
39 words
The ultrasonic phase reversal zone plate focusing transducer as defined in claim 3 wherein electrode areas of overlap decrease in radial width with increased radial position of the electrodes such that the overlapping areas are of substantially equal area.
Claim 6
Dependent Claim
49 words
The ultrasonic phase reversal zone plate focusing transducer as defined in claim 1 for use as a transmitting transducer for concentrating ultrasonic energy produced thereby at a focal point spaced therefrom and including, an rf driving source connected to the inner and outer most electrodes through said connecting means.
Claim 7
Dependent Claim
100 words
A focusing ultrasonic phase reversal zone plate transducer comprising, a uniformly polarized cyclindrical shaped transducer body, a pair of central axially aligned electrodes of different diameter located at opposite faces of the transducer body, at least one annular electrode surrounding the small diameter circular electrode in overlapping position with a portion of the large diameter electrode at the opposite face, and means for series electrically connecting between said small diameter circular electrode and outer annular electrode to provide for at least a pair of adjacent phase reversed active zones adjacent said large diameter central electrode and focusing of the transducer.
Claim 8
Dependent Claim
100 words
A focusing ultrasonic phase reversal zone plate transducer comprising, a uniformly polarized cyclindrical shaped transducer body, a pair of central axially aligned electrodes of different diameter located at opposite faces of the transducer body, at least one annular electrode surrounding the small diameter circular electrode in overlapping position with a portion of the large diameter electrode at the opposite face, and means for series electrically connecting between said small diameter circular electrode and outer annular electrode to provide for at least a pair of adjacent phase reversed active zones adjacent said large diameter central electrode and focusing of the transducer.
Claim 9
Dependent Claim
60 words
The focusing ultrasonic phase reversal zone plate transducer as defined in claim 6 which includes a plurality of annular different-diameter electrodes at opposite faces of the transducer body with annular electrodes on one face in overlapping position with pairs of adjacent electrodes on the opposite face, the areas of overlap establishing adjacent opposite phase active zones within the transducer body.
Claim 10
Dependent Claim
32 words
The focusing ultrasonic phase reversal zone plate transducer as defined in claim 7 wherein the zones decrease in radial width with increased distance from the axis of the cylindrical shaped transducer body.
Claim 11
Dependent Claim
79 words
A focusing ultrasonic phase reversal zone plate transducer comprising, a uniformly poled piezoelectric transducer body, a plurality of annular electrodes on opposite faces of the transducer body with electrodes on one face in overlapping position relative to pairs of adjacent electrodes on the opposite face, and means for connecting between inner and outermost electrodes for the provision of a plurality of adjacent opposite phase active zones within the transducer body at the areas of electrode overlap for transducer focusing.
Claim 12
Dependent Claim
79 words
A focusing ultrasonic phase reversal zone plate transducer comprising, a uniformly poled piezoelectric transducer body, a plurality of annular electrodes on opposite faces of the transducer body with electrodes on one face in overlapping position relative to pairs of adjacent electrodes on the opposite face, and means for connecting between inner and outermost electrodes for the provision of a plurality of adjacent opposite phase active zones within the transducer body at the areas of electrode overlap for transducer focusing.
Claim 13
Dependent Claim
29 words
The focusing ultrasonic phase reversal zone plate transducer as defined in claim 9 wherein the number of active zones is one less than the total number of electrodes employed.