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:
May. 03, 2005
Filed:
Jun. 27, 2003
Mitsuru Sugita, Inuyama, JP;
Yukihiko Kagohara, Inuyama, JP;
Osamu Ishigo, Inuyama, JP;
Yoshikazu Mizuno, Inuyama, JP;
Hiroshi Munetoki, Ikeda, JP;
Ryouhei Kusunoki, Ikeda, JP;
Takashi Shiota, Ikeda, JP;
Ichie Nomura, Tokai, JP;
Naoki Iwama, Tokai, JP;
Hidehisa Kato, Tokai, JP;
Tomoyuki Uemura, Tokai, JP;
Mitsuru Sugita, Inuyama, JP;
Yukihiko Kagohara, Inuyama, JP;
Osamu Ishigo, Inuyama, JP;
Yoshikazu Mizuno, Inuyama, JP;
Hiroshi Munetoki, Ikeda, JP;
Ryouhei Kusunoki, Ikeda, JP;
Takashi Shiota, Ikeda, JP;
Ichie Nomura, Tokai, JP;
Naoki Iwama, Tokai, JP;
Hidehisa Kato, Tokai, JP;
Tomoyuki Uemura, Tokai, JP;
Daido Metal Company Ltd., Nagoya, JP;
Abstract
A bearing device for internal combustion engines, comprising a crankshaft of an internal combustion engine and bearings supporting the crankshaft, and wherein the crankshaft is made of steel having not been subjected to surface hardening and having a structure, which is mainly composed of pearlite having the pro-eutectoid ferrite fraction of at most 3%, and is processed to have the surface roughness Rz of at most 0.8 μm, and wherein the bearings have an aluminum bearing alloy bonded to a back plate thereof and contain, as an alloy component thereof, at least Si particles of less than 4 mass %, whereby early abrasion and scratches of the crankshaft are suppressed to be equivalent to or less than abrasion loss and scratches of conventional DCI shafts.