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:
Sep. 14, 2004
Filed:
Nov. 27, 2002
Kotoyoshi Murakami, Hiroshima, JP;
Mazda Motor Corporation, Hiroshima, JP;
Abstract
A projection is pressed into first and second members W and W with a predetermined pressure, while rotating a rotary tool at a preset rotational speed, such that the first and second members W and W are sandwiched by the rotary tool and stationary tool . The projection rotates in these members to cut member textures around it, thereby generating heat. Furthermore, the cuttings formed by cutting with the projection are accumulated in the members and agitated by the two tools and , to collide against the surrounding member textures and the projection , thereby generating heat. Also, a first shoulder is pressed in with a predetermined pressure and rotated to generate heat, thereby fusing the cuttings. While the plastic flow of the surrounding member textures is promoted, the first shoulder is held at the predetermined pressure and rotational speed. The pressure per unit area is thus increased to increase the volume of plastic flow. When the rotary tool is pulled out while being rotated, the member textures that have been plastically flowing are cooled and joined to each other.