Composite autoclavable ultrasonic transducers and methods of mak

Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

310364, 310368, 310342, 310340, H01L 4108

Patent

active

058443495

ABSTRACT:
An improved composite ultrasonic transducer, and elements therefor, which may be made autoclavable, and a method of making these elements. A number of planar precursors comprising strips of piezoelectric ceramic material separated from one another by a polymer material are stacked one above another with the ceramic strips aligned with one another, and with electrical conductors disposed between each of the planar precursors. These precursors are then bonded to one another, to form a bonded assembly. The bonded assembly is then slit along parallel lines perpendicular to the direction of elongation of the ceramic strips, subdividing the strips into individual ceramic members and also subdividing the planar conductors, forming ribbon-like conductors extending between opposite sides of the array. The saw kerfs are filled with a hardening polymer material. The ribbon-like conductors reaching the edges of the assembly are then connected electrically in parallel, reducing the capacitance of the individual emitters. Criteria for selection of the materials of the ceramic members, the conductors, and other components of the transducer, and their relative proportions are given which allow the transducer to be steam-autoclavable.

REFERENCES:
patent: 4353958 (1982-10-01), Kita et al.
patent: 4514247 (1985-04-01), Zola
patent: 4518889 (1985-05-01), T Hoen
patent: 4564980 (1986-01-01), Diepers
patent: 4572981 (1986-02-01), Zola
patent: 4717851 (1988-01-01), Fenner et al.
patent: 4747192 (1988-05-01), Rokurota
patent: 4939826 (1990-07-01), Shoup
patent: 4958327 (1990-09-01), Saitoh et al.
patent: 4977655 (1990-12-01), Martinelli
patent: 5153859 (1992-10-01), Chatigny et al.
patent: 5263004 (1993-11-01), Larson, III
patent: 5311095 (1994-05-01), Smith et al.
patent: 5329496 (1994-07-01), Smith
patent: 5359760 (1994-11-01), Busse et al.
patent: 5503152 (1996-04-01), Oakley et al.
patent: 5548564 (1996-08-01), Smith
patent: 5620479 (1997-04-01), Diederich
patent: 5625149 (1997-04-01), Gururaja et al.
patent: 5650685 (1997-07-01), Kosinski et al.
patent: 5684884 (1997-11-01), Nakaya et al.
`Active Underwater Acoustic Attenuation Coatings`, Dr. Thomas Howarth, Thesis, The Pennsylvania State University, Aug. 1991, pp. 97-137.
`A Precision Tape Casting Machine for Fabricating Thin Ceramic Tapes`.
Runk et al, Ceramic Bulletin, vol. 54, No. 2, (1975), pp. 199-200 `Tape Casting: the Basic Process for Meeting the Needs of the Electronics Industry`, R. Mistler, Ceramic Bulletin vol. 69, No. 6, (1990) pp. 1022-1026.
`Tape Casting` R. Mistler, ASM International, Engineered Materials Handbook, vol. 4, (1992), pp. 161-165.
`Processing Parameters and Electric Properties of Doctor-Bladed Ferro-electric Ceramics`, C. Wentworth et al, Ceramic Bulletin, vol. 46, No. 12, (1967), pp. 1186-1193.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Composite autoclavable ultrasonic transducers and methods of mak does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Composite autoclavable ultrasonic transducers and methods of mak, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Composite autoclavable ultrasonic transducers and methods of mak will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2398102

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.