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:
Jan. 26, 1999
Filed:
Nov. 15, 1996
Shingo Kono, Iwata, JP;
NTN Corporation, Osaka, JP;
Abstract
A steel connecting rod that is used mainly in a small-size internal combustion engine includes generally elongated first and second connecting rod forming plates (2) prepared from a steel plate by the use of a press work and having bearing holes (4, 5) defined in opposite ends of each of the first and second connecting rod forming plates (2) in the form of burrings (8, 9). The first and second connecting rod forming plates (2) are joined in face-to-face relation with each other. Bearings (10) are press-fitted into the bearing holes (4, 5) so as to straddle between the burrings (8, 9) at each end of the first and second connecting rod forming plates (2). The height (a) of a corner (11) formed at a radially inner base end of each burring (8, 9) is chosen to be smaller than the plate thickness (t) of each of the first and second connecting rod forming plates (2). Each of the first and second connecting rod forming plates (2) is made from a steel plate that is not heat-treated.