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Assignee: Transat Corp.


Location: ShakerHeights, OH
No. of patents: 3

NumberTitleIssue Date
4447782Apparatus for automatic measurement of equivalent circuit parameters of piezoelectric resonators
A heterodyne zero-phase detector (A) produces a phase output signal whose phase varies with the phase difference between a selectively variable test signal and the same selectively variable test signal as modified by being applied to a piezoelectric reson...
05/08/1984
4407094Apparatus for automatic lapping control
Apparatus for automatic lapping control, based on imbedding an electrode in a lap plate of a lap machine and including at least one piezoelectric wafer in the lap load. Connected with the electrode is an automatic control circuit used for sensing the reso...
10/04/1983
4112134Vacuum deposition method for frequency adjustment of piezoelectric resonators
Vacuum deposition method for adjusting the resonant frequency of piezoelectric resonators wherein the speed and accuracy of the process are enhanced by abrupt termination of the deposition through injection of a gas into the vacuum chamber at the end of t...
09/05/1978
 
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