Crystal resonator housing configurations
AssigneeThe United States of America as represented by the Secretary of the Army
InventorsErich Hafner, John R. Vig
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Abstract
A ceramic package is disclosed which comprises a frame member having an ature for accommodating a crystal resonator. The frame member includes mounting clips for supporting the crystal resonator in a desired vibratory mode. A bottom and top lid are then fastened to the frame to enclose the crystal to also enable hermetic sealing in an ultra high vacuum without the use of large deleterious forces. The package provides a hermetic enclosure enabling improved frequency stability and overall reliability.
Claims7
A force responsive resonator assembly of the type capable of mechanically vibrating or flexing at a predetermined rate, comprising:
- a. a crystal having parallel upper and lower surfaces and a squared outer edge;
- b. a frame assembly having a central aperture, said frame assembly fabricated from an insulator material and including first and second layers of metallic conducting material embedded in the wall of said assembly, said first and second layers aligned in a common plane and located on opposite sides of said aperture;
- c. first and second support members mounted on said frame located within said aperture and electrically coupled to said first and second layers of said metallic conducting material;
- d. each said support member comprising a flexible curved ribbon member secured within said central aperture and electrically connected to said first and second layers of said metallic conducting material, said ribbon member including a V-shaped slot having a width substantially greater than the height of said crystal;
- e. said crystal being mounted in said central aperture with said edges of said crystal extending into said V-shaped slots, said edges being joined to said ribbon members along a line at the upper and lower periphery of said edges;
- and
- f. means coupled to said frame assembly at both ends of said central aperture to hermetically enclose said force responsive member within the hollow formed by said aperture.
Dependencies are inferred from the claim text.