Claims
- 1. An ultrasonic transducer assembly comprising:
- a body member having an end wall and a plurality of side walls, said end wall having a pair of exterior planar surfaces, each of said exterior planar surfaces extending from a centerline of said end wall outwardly to a side edge of said end wall at a predetermined angle relative to each other, an interior surface, and a pair of recesses located in said interior surface which are separated from each other by a central rib which extends along said centerline of said end wall, each of said recesses having a planar surface which is parallel to one of said exterior planar surfaces of said end wall, said side walls having an outwardly extending exterior rib which is located between the top and bottom surfaces thereof and which extends about the periphery thereof, one of said end walls which is located at one end of said central rib including a multiple pin receiving post which is integrally formed therewith and which extends perpendicularly from said interior surface of said end wall, said post having a plurality of equally spaced, tapered, pin receiving holes;
- a pair of piezoelectric ceramic planar members, each of said members having a pair of conductive electrodes covering and affixed to opposite surfaces thereof, respectively;
- a plurality of metal ribbons;
- first means for attaching one of said ribbons to each of said electrodes, each of said ribbons having a length sufficient for it to be inserted well into a corresponding one of said plurality of tapered holes in said multiple pin receiving post;
- second means for attaching one of said pair of ceramic planar members to said planar surface in each of said recesses; and
- a multiple pin connector having an electrically conductive pin inserted in each of said tapered holes in such a manner as to form a good electrical connection between said pin and the metal ribbon inserted in said hole.
- 2. An assembly according to claim 1 wherein said body member comprises an injection-molded body member.
- 3. An assembly according to claim 1 which is operable at a predetermined acoustic wavelength and wherein said end wall of said body member between said planar surface of each of said recesses and a corresponding one of said exterior planar surfaces comprises a thickness which is an odd quarter multiple of said wavelength.
- 4. An assembly according to claim 1 wherein said predetermined angle between said exterior planar surfaces comprises approximately 176 degrees.
- 5. An assembly according to claim 1 wherein said body member comprises a material which is transparent to ultraviolet light and said second attaching means comprises an epoxy which is cured by the exposure thereof to ultraviolet light.
- 6. An assembly according to claim 1 wherein said first attaching means comprises a spot weld.
- 7. An assembly according to claim 1 wherein each of said metal ribbons is less than 1 mil thick.
- 8. An assembly according to claim 1 wherein each of said ceramic planar members comprises a D-shaped ceramic planar member.
- 9. An ultrasonic transducer assembly which is operable at a predetermined acoustic wavelength comprising:
- an injection-molded body member;
- a first and a second piezoelectric ceramic member for transmitting and receiving ultrasonic signals, both said first and said second members having electrodes located on opposite surfaces thereof, said first member having a transmitting axis and said second member having a receiving axis;
- means for mounting said first and said second members in said body member in planes disposed at a predetermined angle to each other such that said transmitting and receiving axes of said members intersect at a predetermined distance along a line which extends through the center of said body member, said body member having a thickness along said transmitting and receiving axes which is an odd quarter multiple of said predetermined acoustic wavelength; and
- means for acoustically isolating said first and said second ceramic members;
- an electrical connector having a plurality of pin members;
- a plurality of metallic ribbons;
- means for attaching one end of each of said ribbons to a corresponding one of said electrodes on said surfaces of said ceramic members; and
- a post member having a plurality of tapered holes, each of said holes corresponding to each of said pin members and each of said ribbons in which each of said pin members and each of said ribbons is inserted in a friction-tight manner.
- 10. An ultrasonic transducer assembly comprising:
- an injection-molded body member which is transparent to ultraviolet radiation having a pair of recesses;
- a first and a second piezoelectric ceramic member for transmitting and receiving ultrasonic signals, both said first and said second members having electrodes located on opposite surfaces thereof, said first member having a transmitting axis and said second member having a receiving axis;
- an electrical connector having a plurality of pin members;
- a plurality of metallic ribbons;
- means for attaching one end of each of said ribbons to a corresponding one of said electrodes on said surfaces of said ceramic members;
- means for electrically connecting an opposite end of each of said ribbons to a corresponding one of said pin members of said electrical connector; and
- an adhesive which is cured by exposure to ultraviolet radiation for mounting said first and said second members in said recesses in said body member in planes disposed at a predetermined angle to each other such that said transmitting and receiving axes of said members intersect at a predetermined distance along a line which extends through the center of said body member.
- 11. An assembly according to claim 10 wherein said body member comprises means extending outwardly from said body member for detachably mounting said assembly in a handheld probe.
Parent Case Info
This is a division of Ser. No. 895,273, filed Aug. 11, 1986, now U.S. Pat. No. 4,691,418.
US Referenced Citations (6)
Divisions (1)
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Number |
Date |
Country |
Parent |
895274 |
Aug 1986 |
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