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:
Jan. 20, 2015
Filed:
Jan. 29, 2010
Katsunori Suzuki, Nabari, JP;
Mikio Oguma, Kumagaya, JP;
Sho Matsumoto, Hitachinaka, JP;
Hitachi Automotive Systems, Ltd., Ibaraki, JP;
Abstract
A flangeof a cap caseis provided with protrusionsthat, before being swaging, project upward from the flange. When the flangeis swaged along an upper surface of the cap, the protrusionprojects along the upper surface of the capfrom the flangetoward a center of the cap. The cap caseis welded to the capby friction stir welding at a welding portionlocated at a substantially center of the protrusion. The protrusionsare formed approximately in a letter-T shape that is symmetric left and right, and width Wof a connecting portionin a cap circumferential direction is smaller than the maximum width W. The rigidity of the connecting portionagainst deformation is reduced by forming a portion with small width Wat the connecting portion