Crystal device for surface mounting

Details Crystal device for surface mounting Crystal device for surface mounting

2009-04-06

2010-12-28

Pascal, Robert (Department: 2817)

Oscillators

With outer casing or housing

C331S158000, C310S340000, C310S344000

Reexamination Certificate

active

07859348

ABSTRACT:
A crystal device for surface mounting, in which a metal cover is jointed to the metal ring by seam welding, satisfies relationships A2/A1<C2/C1and B2/B1<D2/D1,where A1is a length of a long side of the metal ring, A2is a length of a straight portion of a long side except for curved portions, B1is a length of a short side of the metal ring, B2is a length of a straight portion of the short side except for the curved portions thereof, C1is a length of a long side of the metal cover, C2is a length of a straight portion of the long side except for the curved portions thereof, D1is a length of a short side of the metal cover, and D2is a length of a straight portion of the short side except for the curved portions thereof.

REFERENCES:
patent: 6777858 (2004-08-01), Bang et al.
patent: 2002231845 (2002-08-01), None
patent: 2003-068900 (2003-03-01), None
patent: 2004-063960 (2004-02-01), None
patent: 2007-075857 (2007-03-01), None
patent: 2007073713 (2007-03-01), None
patent: 2007142186 (2007-06-01), None
patent: 2007-173976 (2007-07-01), None
patent: 2009-224515 (2009-10-01), None

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