Devices for making piezoelectric ceramic or ceramic-base composite sensors
AssigneeHoechst Celanese Corporation
InventorsIlmar L. Kalnin, Howard Furst, George J. Breckenridge, O. Richard Hughes
Life of this patent
Estimating the term…
Loading patent…
AssigneeHoechst Celanese Corporation
InventorsIlmar L. Kalnin, Howard Furst, George J. Breckenridge, O. Richard Hughes
Estimating the term…
Cubelets are made from a piezoelectrically active ceramic material having holes therein which may be cross-cored. The holes are selectively filled with a liquid curable resin, such as an epoxy. The cubelets may also be formed from bonded or sintered "half-shapes" containing half cores, wherein a face bisects one hole or an array of holes or cross-cored holes to form one or an array of semicircular grooves or crossed semicircular grooves. The cubelets, whether filled with resin or having unfilled internal volume, are arranged in a precision array within the snug-fitting cavities of a lattice, whereby the holes are sealed off, to form a cubelet/lattice assembly which is then electroded and poled in an electric field and encapsulated in polymer to form a part of a hydrophone assembly, for example.
In the fabrication of a hydrophone assembly, wherein a plurality of selected cubelets, molded from a piezoelectrically active ceramic material, must be arranged in a precision array and embedded in a liquid polymer resin which is then cured with the array in place,
A device for facilitating the fabrication of a hydrophone assembly, comprising:
Dependencies are inferred from the claim text.