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.

Date of Patent:
Oct. 13, 2015

Filed:

Apr. 11, 2011
Applicants:

Koichi Matsumoto, Tochigi, JP;

Teruaki Kobayashi, Tochigi, JP;

Hiroshi Miwa, Tochigi, JP;

Inventors:

Koichi Matsumoto, Tochigi, JP;

Teruaki Kobayashi, Tochigi, JP;

Hiroshi Miwa, Tochigi, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K 11/11 (2006.01); B23K 11/31 (2006.01);
U.S. Cl.
CPC ...
B23K 11/115 (2013.01); B23K 11/315 (2013.01); B23K 2201/18 (2013.01);
Abstract

A flange sectionprotruding in a radial direction of a ball screw shaftis formed at a lower end portion of the ball screw shaft, and a protrusion stopperwhich abuts on the flange sectionto prevent the ball screw shaftfrom protruding out of the rodis formed in a hollow section of the rod. On the lower side of the hollow section of the rod, there is formed a retraction stopperwhich abuts on a lower end portionof the ball screw shaftto limit the retraction of the rod


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