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:
Jul. 02, 2013
Filed:
Dec. 01, 2009
Applicant:
Masanori Hirai, Gifu, JP;
Inventor:
Masanori Hirai, Gifu, JP;
Assignee:
Nabtesco Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H 25/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
An electric actuator includes a first port, a second port, and a cylinder chamber connecting passage. The first port is formed on an inner face of a rod-side cylinder chamber of a cylinder body. The second port is formed on an inner face of a head-side cylinder chamber of the cylinder body. The cylinder chamber connecting passage connects the first port and the second port. In the electric actuator, a piston part of a piston rod closes the first portwhen the piston rod advances.