Constant temperature type crystal oscillator

Details Constant temperature type crystal oscillator Constant temperature type crystal oscillator

2005-05-16

2008-03-18

Pascal, Robert J. (Department: 2817)

Oscillators

With outer casing or housing

With temperature modifier

C331S066000, C331S070000, C331S158000, C331S176000

Reexamination Certificate

active

07345552

ABSTRACT:
A lead wire led-out type crystal oscillator of constant temperature type for high stability is disclosed, which includes a heat supply body that supplies heat to a crystal resonator from which a plurality of lead wires are led out, to maintain the temperature constant. The heat supply body includes a heat conducting plate which has through-holes for the lead wires and is mounted on the circuit board, and which faces, and is directly thermally joined to, the crystal resonator and a chip resistor for heating which is mounted on the circuit board adjacent to the heat conducting plate, and is thermally joined to the heat conducting plate.

REFERENCES:
patent: 3719860 (1973-03-01), Lawrence
patent: 5146044 (1992-09-01), Kurokawa et al.
patent: 5703542 (1997-12-01), Blandino et al.
patent: 6208213 (2001-03-01), Anastasyev et al.
patent: 2004/0060925 (2004-04-01), Zhou et al.
patent: 0 994 563 (2000-04-01), None
patent: 0 994 563 (2000-08-01), None
patent: HEI 01-195706 (1989-08-01), None
European Search Report issued Oct. 4, 2005.
Office Action issued by the European Patent Office on Jun. 23, 2006.

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