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. 09, 2021
Filed:
Dec. 12, 2018
Tpr Co., Ltd., Tokyo, JP;
Tpr Industry Co., Ltd., Yamagata, JP;
Koichi Hatakeyama, Yamagata, JP;
Tomoki Takiguchi, Yamagata, JP;
Yoshihiko Aoki, Yamagata, JP;
Yuusuke Okuyama, Yamagata, JP;
Mako Abe, Yamagata, JP;
TPR Co., Ltd., Tokyo, JP;
IPR Industry Co., Ltd., Yamagata, JP;
Abstract
The present invention addresses the problem of providing a cylinder liner for insert casting, with which the bonding strength between a cylinder liner and a cylinder block can be improved by reducing voids generated on the cylinder block. The problem is solved by a cylinder liner for insert casting which includes plural projections on its outer peripheral surface and satisfies the following (i) and (ii): (i) the number of the projections is 5 to 50 per 1 cmon the outer peripheral surface, and (ii) when two 15.2 mm×0.03 mm lines are set in parallel with a gap of 3.8 mm therebetween at an arbitrary position on the outer peripheral surface of the cylinder liner, the total number of projections that are in contact with the two lines is 8 or less.