Magnetic guide apparatus

United States of America Patent

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Jan 10, 2012
Grant Date
Jul 9, 2009
app pub date
Dec 31, 2008
filing date
Jan 4, 2008

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Expired

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Abstract

A signal correction arithmetic unit is provided in a control apparatus to control a magnetic force of a magnetic guide unit. The signal correction arithmetic unit differentiates detection signals of two gap sensors, and integrates and outputs a differential signal with a smallest absolute value. The output signal is used for magnetic control.

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Patent Owner(s)

Patent Owner	Address
TOSHIBA ELEVATOR KABUSHIKI KAISHA	KANAGAWA 212-0013

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B66B:ELEVATORS; ESCALATORS OR MOVING WALKWAYS

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Inventor Name	Address	# of filed Patents	Total Citations
Ito, Hiroaki	Tokyo, JP	233	2429

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Magnetic guide apparatus

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United States of America Patent

12347037

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PATENT NO	8091686
APP PUB NO	20090173583A1
SERIAL NO	12347037
DOCKET NO

US Family Size	Non-US Coverage
Patent Longevity Expired	Forward Citations

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
January 10, 2012	US,8091686,B2 US8091686B2	GRANTED PATENT AS SECOND PUBLICATION
July 09, 2009	US,20090173583,A1 US20090173583A1	FIRST PUBLISHED PATENT APPLICATION

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12347037

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