Vibration absorbing case for an oscillator

Details Vibration absorbing case for an oscillator Vibration absorbing case for an oscillator

1990-09-26

1992-02-18

Grimm, Siegfried H.

Oscillators

With outer casing or housing

174 521, 361399, H03B 100, H05K 504

Patent

active

050897942

ABSTRACT:
The structure of a shield case for covering circuitry loaded on a hybrid substrate of an oscillator and thereby isolating the circuitry from the outside. The shield case has a bottom-open box-like configuration and is made of a conductive material. The conductive material is implemented with alloy which absorbs vibrations and thereby intercepts vibrations otherwise imparted from the outside to the circuitry. The physical distance between the vibration absorbing shield case and various parts of the circuitry provided on the substrate is not changed in spite of the external vibrations, whereby the oscillation frequency of the oscillator is maintained constant.

REFERENCES:
patent: 4091232 (1978-05-01), Lenk et al.
patent: 4332001 (1982-05-01), Tateishi et al.

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