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US 4,072,871 AGranted
Electroacoustic transducer
AssigneeWestinghouse Electric Corp.
InventorCharles R. Wilson
Life of this patent
Estimating the term…
Abstract
A transducer for transmitting and/or receiving acoustic energy under water includes a head mass, a tail mass, and an active motor/generator section which includes piezoelectric elements active in the shear mode of operation. Another embodiment illustrates a transducer of a bender configuration.
Claims5
An electroacoustic transducer comprising:
- A. a head mass;
- B. a tail mass;
- C. piezoelectric type oscillatory material which is active in the shear mode of operation coupled to and supported between said head and tail masses;
- D. said oscillatory material being in the form of a plurality of piezoelectric rings each having inner, outer and end planar surfaces;
- E. a first support member coupled to said head mass;
- F. a second support member coupled to said tail mass;
- G. said first and second support members having shoulder portions for respective engagement with a first and second one of said piezoelectric rings;
- and
- H. a third support member common to both said first and second piezoelectric rings.
6 more elements
An electro-acoustic transducer comprising:
- A. a cylindrical housing;
- B. first and second bender discs connected to said housing at opposite ends thereof and defining an interior;
- and
- C. piezoelectric type oscillatory material which is active in the shear mode of operation coupled to and supported between said first and second bender discs, within said interior.
1 more element
An electro-acoustic transducer comprising:
- A. first and second end sections spaced apart along a longitudinal axis;
- B. an outside wall extending between and coupled to said end sections;
- C. piezoelectric type oscillatory material which is active in the shear mode of operation coupled to and supported between, said first and second end sections;
- D. said outside wall completely surrounding said longitudinal axis and said oscillatory material, and being curved from said first end section to said second end section.
1 more element
An electroacoustic transducer comprising:
- A. a head mass;
- B. a tail mass;
- C. piezoelectric type oscillatory material which is active in the shear mode of operation coupled to and supported between said head and tail masses;
- D. said oscillatory material being in the form of a plurality of piezoelectric rings each having inner, outer and end planar surfaces;
- E. at least two of said plurality of piezoelectric rings being adjacent and spaced apart with an end planar surface of one facing an end planar surface of the other;
- F. electrode means connected to respective inner and outer surfaces of said plurality of piezoelectric rings;
- G. means connecting a first of said two piezoelectric rings to said head mass;
- H. means connecting the other of said two piezoelectric rings to said tail mass;
- and
- I. a support member common to both said two piezoelectric rings.
7 more elements
An electroacoustic transducer comprising:
- A. a head mass;
- B. a tail mass;
- C. piezoelectric type oscillatory material which is active in the shear mode of operation coupled to and supported between said head and tail masses;
- D. said oscillatory material being in the form of a plurality of piezoelectric rings each having inner, outer and end planar surfaces;
- E. at least two of said plurality of piezoelectric rings being spaced apart and concentrically arranged with the inner surface of one facing the outer surface of the other;
- F. electrode means connected to respective inner and outer surfaces of said plurality of piezoelectric rings;
- G. means connecting a first of said two piezoelectric rings to said head mass;
- H. means connecting the other of said two piezoelectric rings to said tail mass;
- and
- I. a support member common to both said two piezoelectric rings.
7 more elements
Dependencies are inferred from the claim text.