US Patent 9890840 Electric linear actuator
Patent 9890840 was granted and assigned to NTN on February, 2018 by the United States Patent and Trademark Office.
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Patent abstract
An electric linear actuator has a housing, an electric motor, a speed reduction mechanism and a ball screw mechanism. The ball screw mechanism has a nut and screw shaft. A blind bore is formed on the housing. The blind bore contains an end of the screw shaft. An anti-rotation mechanism for the screw shaft has a sleeve and guide pin. The sleeve is press-formed from steel sheet and fit into the blind bore of the housing. The guide pin is mounted on the end of the screw shaft, via a through aperture formed in the screw shaft. The guide pin axially movably engages the sleeve.
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Patent Citations Received
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Patent Inventor Names
Hirakazu Yoshida0
Keisuke Kazuno0
Kunimichi Hatano0
Takaaki Ohnishi0
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US Patent 09890840 Electric linear actuator US Patent 9890840 Electric linear actuator
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Patent Number
09890840
Patent Number
9890840
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US Patent 09890840 Electric linear actuator
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Is a
Patent applicant
Current assignee
Patent jurisdiction
Patent number
09890840
Date of patent
February 13, 2018
Patent application number
14683275
Date Filed
April 10, 2015
Patent primary examiner
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