US Patent 7906928 Feed motor lock detection device
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Patent abstract
A feed motor lock detection device detects a back-electromotive voltage in a feed motor M and checks whether the feed motor M is in a driven state or in a non-driven state based on the level of the back-electromotive voltage.
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Patent Inventor Names
Takashi Fujimura0
Yuji Ito0
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US Patent 07906928 Feed motor lock detection device US Patent 7906928 Feed motor lock detection device
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Patent Number
07906928
Patent Number
7906928
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US Patent 07906928 Feed motor lock detection device
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Is a
Patent jurisdiction
Patent number
07906928
Date of patent
March 15, 2011
Patent application number
12045865
Date Filed
March 11, 2008
Patent primary examiner
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