Railway switches and signals – Switches
Reexamination Certificate
2008-05-06
2008-05-06
Le, Mark (Department: 3617)
Railway switches and signals
Switches
C246S231000, C246S227000
Reexamination Certificate
active
10542866
ABSTRACT:
A point switching device that is disposed at a diverging point on tracks on which a movable body travels is provided. This point switching device includes: a point that rotates around a support point on one end, and can move between a first position and a second position; a first coil that generates an induction field to drive the point to the first position; a second coil that generates an induction field to drive the point to the second position; and an excitation control unit that selectively supplies an intermittent exciting current to the first coil or the second coil.
REFERENCES:
patent: 1548940 (1925-08-01), Gill
patent: 4223857 (1980-09-01), Hussein
patent: 5085148 (1992-02-01), Konno
patent: 6039291 (2000-03-01), Dobson, IV
patent: 3328479 (1992-09-01), None
patent: 9084962 (1997-03-01), None
International Search Report for PCT/JP2004/000288 mailed Feb. 24, 2004.
Wada Jingo
Yamaguchi Takashi
Darby & Darby P.C.
Konami Corporation
Le Mark
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