Piezoelectric resonator for timepieces and method for making sam

Details Piezoelectric resonator for timepieces and method for making sam Piezoelectric resonator for timepieces and method for making sam

1975-08-04

1977-12-27

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310367, H01L 4104

Patent

active

040656845

ABSTRACT:
A piezoelectric resonator, particularly for electronic wrist watches, comprises an elongated piezoelectric crystal rod that oscillates in length-extension. Opposite faces of the rod are partially metallized; and short wires are secured tangentially to these metallized surfaces midway of the length of the rod. The wires extend perpendicular to the length of the rod and are secured at their other ends to metallized opposite surfaces of an elongated ceramic support which is parallel to and of about the same size and shape as the rod. The support also has metallized end faces which are secured to the inner ends of support wires that pass through a casing in sealed relationship and mount the support and rod in spaced relation from the casing.

REFERENCES:
patent: 3221189 (1965-11-01), Brandt et al.
patent: 3735166 (1973-05-01), Bradley
patent: 3805098 (1974-04-01), Carpenter et al.
patent: 4025806 (1977-05-01), Weber
patent: 4027181 (1977-05-01), Moreillon et al.

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