US Patent 7770698 Elevator apparatus
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Patent abstract
In an elevator apparatus, a brake device stops a car from running. The brake device has a power shutoff portion for shutting off a supply of power to a brake opening coil in response to a brake actuation command, and a current adjusting portion for supplying the brake opening coil with power while adjusting an amount of current in response to a deceleration reduction command from a brake control portion. The current adjusting portion can supply the brake opening coil with power even when the supply of power to the brake opening coil is shut off by the power shutoff portion.
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Patent Inventor Names
Ken-Ichi Okamoto0
Masunori Shibata0
Satoru Takahashi0
Takaharu Ueda0
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US Patent 07770698 Elevator apparatus US Patent 7770698 Elevator apparatus
Infobox
Patent Number
077706980
Patent Number
77706980
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Official Website
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Infobox
Is a
Patent Jurisdiction
Patent Number
077706980
Date of Patent
August 10, 2010
0Patent Application Number
118140390
Date Filed
March 17, 2006
0Official Website
Patent Primary Examiner
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US Patent 07770698 Elevator apparatus
Infobox
Is a
Patent jurisdiction
Patent number
07770698
Date of patent
August 10, 2010
Patent application number
11814039
Date Filed
March 17, 2006
Patent primary examiner
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