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:
Jun. 07, 2016
Filed:
Jul. 26, 2013
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Takumi Hori, Tokyo, JP;
Yasuyuki Fujiya, Tokyo, JP;
Takehisa Okuda, Tokyo, JP;
Osamu Hasegawa, Tokyo, JP;
Katsuya Sennyu, Tokyo, JP;
Masao Watanabe, Tokyo, JP;
Takaaki Kaikogi, Tokyo, JP;
MITSUBISHI HEAVY INDUSTRIES MACHINE TOOL CO., LTD., Ritto-Shi, JP;
Abstract
A movable vacuum welding device () includes a vacuum chamber () having an edge section () opposite to a surface of a welding target (T) and forming a vacuum space between the surface of the welding target (T) and the vacuum chamber (), a seal section () interposed between the edge section () and the welding target (T) throughout the entire circumference of the edge section (), a welding head () configured to perform welding on the surface of the welding target (T) in the vacuum space, and a preload unit () configured to previously apply a load to the seal section (). The seal section () includes a first seal member () formed of an elastic material and extending along the edge section (), and a second seal member () disposed at least a rear side in a relative moving direction in which a welding bead (W) passes and having higher flexibility than the first seal member ().