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:
Nov. 30, 2010
Filed:
Oct. 14, 2005
Yuuji Okamoto, Shizuoka-ken, JP;
Takashi Tsujimoto, Shizuoka-ken, JP;
Jiro Mochizuki, Shizuoka-ken, JP;
Yasuhiro Kanbori, Shizuoka-ken, JP;
Yuuji Okamoto, Shizuoka-ken, JP;
Takashi Tsujimoto, Shizuoka-ken, JP;
Jiro Mochizuki, Shizuoka-ken, JP;
Yasuhiro Kanbori, Shizuoka-ken, JP;
NTN Corporation, Osaka-fu, JP;
Abstract
A tapered roller bearing comprises an inner ring having a conical surface-like raceway surface in it outer periphery and formed with a cone back face rib and a cone front face rib on the opposite sides of the raceway, an outer ring having a conical surface-like raceway in its inner periphery, a plurality of tapered rollers interposed between the raceways of the inner and outer rings, and a cage for holding the tapered rollers in predetermined circumferential intervals, wherein the ratio R/Rof the radius of curvature R of the large end face () of the tapered roller () to the distance Rfrom the apex of cone of the tapered roller () to the cone back face rib surface () of the inner ring () is set at 0.75 to 0.87, and the end face deflection of the large end face () of the tapered roller () is 3 μm or less.