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. 11, 2013
Filed:
Dec. 11, 2008
Akira Mataga, Toyohashi, JP;
Tomoyuki Fujita, Toyohashi, JP;
Akira Mataga, Toyohashi, JP;
Tomoyuki Fujita, Toyohashi, JP;
Musashi Seimitsu Industry Co., Ltd., Toyohashi-Shi, JP;
Abstract
The present invention relates to a method of forming a cam shaft by assembling a preliminary shaft having a predetermined outer diameter and a cam lobe including a cam-lobe shaft hole having a diameter larger than the outer diameter of the preliminary shaft. The method comprises: a one-side projecting-part forming step in which a one-side projecting part for fixing a one-side surface of the cam lobe is previously formed on an axially predetermined position of the preliminary shaft; an inserting step in which the preliminary shaft is inserted into the cam-lobe shaft hole of the cam lobe from a side of the preliminary shaft on which the one-side projecting part has not been formed; a temporary fixing step in which the cam lobe and the preliminary shaft are temporarily fixed to each other, by pressing the one-side surface of the inserted cam lobe against the one-side projecting part, such that the cam lobe and the preliminary shaft are circumferentially positioned; and an other-side projecting-part forming step in which an other-side projecting part for fixing an other-side surface of the cam lobe is formed on an outer circumferential part of the preliminary shaft near the other-side surface of the cam lobe that has been temporarily fixed.