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:
Dec. 22, 2009
Filed:
Oct. 25, 2004
Katsunori Takai, Tokyo, JP;
Sotsuo Miyoshi, Tokyo, JP;
Katsunori Takai, Tokyo, JP;
Sotsuo Miyoshi, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
An assembly method includes a step of press-fitting a second valveto a valve shaftto which a first valveis press-fitted and secured while measuring and adjusting a distance Lso that it becomes equal to a distance L. Thus, the first valveand second valveare press-fitted to the valve shaftand those components are swaged together so that the first and second valves are secured to the valve shaft, and oil is placed in a press-fitted portion. When components, such as the first valve, are sintered parts, oil contained in the sintered parts themselves is used for increasing a joining force that occurs in the press-fitted portion.