Method and means for damping modes of piezoelectric vibrators

Details Method and means for damping modes of piezoelectric vibrators Method and means for damping modes of piezoelectric vibrators

1989-05-04

1992-01-07

Simmons, David A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

1566591, 156663, 29 2535, 427100, 427124, 20419217, 205221, H01L 4100

Patent

active

050788345

ABSTRACT:
A method and arrangement for providing damping of undesired modes of piezoelectric vibrators is disclosed that eliminates the tedious and often inaccurate methods of known mass-loading techniques. Instead, the arrangement relies on physically altering a controlled amount of the piezoelectric material located at a predetermined point to effect the selective damping needed to minimize the undesired responses and to minimally interfere with the desired mode of operation.

REFERENCES:
patent: 2870521 (1959-01-01), Rudnick
patent: 3332122 (1967-07-01), Christian
patent: 3336487 (1967-08-01), Martyn et al.
patent: 3697788 (1972-10-01), Parker et al.
patent: 3898489 (1975-08-01), Grady et al.
patent: 4191906 (1980-03-01), Kogure
patent: 4361778 (1982-10-01), Luff et al.
patent: 4477952 (1984-10-01), Crescenzi et al.
patent: 4608510 (1986-08-01), Dinger et al.

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