Piezoelectric crystal mounting

Details Piezoelectric crystal mounting Piezoelectric crystal mounting

1975-07-14

1979-05-01

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310352, H01L 4110

Patent

active

041526163

ABSTRACT:
A piezoelectric crystal comprising an elongated bar-shaped crystal having a pair of parallel spaced lead wires depending orthogonally from nodal points on one surface of the crystal and an elongated bar-shaped base in spaced relationship to the crystal and supporting the lead wires. The base is provided with conical shape holes with the larger diameter ends thereof proximal to the crystal, and sealing and securing means locate the hermetical seal between the lead wires and the base distal from the crystal enabling the lead wires to vibrate freely within the conical holes of the base. The length of the lead wires between the crystal and the point of attachment to the base is one-quarter wave length to return to the crystal a maximum percentage of the vibrational energy transmitted into the lead wires from the crystal thereby minimizing energy dissipation of the crystal while maintaining both a minimum distance between the crystal and the base and providing a minimum package size for the crystal. A cover cooperates with portions of the base to enclose the crystal.

REFERENCES:
patent: 2513870 (1950-07-01), Hoffman
patent: 2546321 (1951-03-01), Ruggles
patent: 3073975 (1963-01-01), Bigler et al.
patent: 3735166 (1973-05-01), Bradley
patent: 3913195 (1975-10-01), Beaver

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