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. 11, 2017
Filed:
Oct. 28, 2015
Applicant:
Jeol Ltd., Tokyo, JP;
Inventor:
Shuichi Yuasa, Tokyo, JP;
Assignee:
JEOL Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 37/26 (2006.01); F16H 25/20 (2006.01); H01J 37/20 (2006.01);
U.S. Cl.
CPC ...
F16H 25/20 (2013.01); H01J 37/20 (2013.01); F16H 2025/204 (2013.01); F16H 2025/2078 (2013.01); H01J 2237/0216 (2013.01); H01J 2237/0458 (2013.01); H01J 2237/20221 (2013.01); H01J 2237/20278 (2013.01); H01J 2237/26 (2013.01);
Abstract
An actuator capable of reducing vibrations of its output shaft is offered. The actuator () includes an electric motor (), a ball spline () of finite stroke length, and a nut (). The ball spline () has a shaft () provided with rolling grooves () which are formed along the axis of the spline and along which balls () can roll. An external thread () is formed on the shaft (). The nut () has an internal thread () with which the external thread () threadedly mates, and operates to transmit the rotary force of the motor () into the shaft ().