The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 04, 2017
Filed:
Jul. 17, 2015
Ntn Corporation, Osaka-shi, JP;
Kensuke Funada, Iwata, JP;
NTN Corporation, Osaka-shi, JP;
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 a screw shaft. Both include a helical screw groove. The nut is supported by rolling bearings mounted on the housing. The screw shaft is coaxially integrated with the drive shaft. The screw shaft is inserted into the nut, via a large number of balls. The housing has a first housing and a second housing. The electric motor is mounted on the first housing. The second housing abuts against an end face of the first housing. At least one of the first and second housings is formed with ribs. The ribs extend from each of securing portions to a containing portion that contains the screw shaft. The securing portions are arranged on the periphery of the housing to receive fastening bolts.