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:
Sep. 23, 1997
Filed:
Feb. 28, 1996
Masaji Yukawa, Sakai, JP;
Masahiro Aketa, Sakai, JP;
Kazutoshi Okamoto, Sakai, JP;
Yasukazu Kamada, Sakai, JP;
Akira Hayatani, Sakai, JP;
Masahiko Sugimoto, Sakai, JP;
Nobuhiro Yamamoto, Sakai, JP;
Kubota Corporation, Osaka, JP;
Abstract
A water passage forming member (10) embedded in a connection wall (4) between adjacent bores (3a) (3a) of a multi-cylinder (2) by a casting process is provided with a pair of left and right vertical jacket communication passages (12)(12) for making cylinder jackets (8)(8) within a cylinder block (1) communicate with a head jacket (22), cooling water passages (15) arranged vertically and in multiple stage for making the paired jacket communication passages (12)(12) communicate with each other, and non-hollow portions (11) arranged in multiple stage and alternately with the cooling water passages (15). A pair of left and right cooling water induction portions (13)(13) are disposed in the lower portions of the jacket communication passages (12)(12) and opened toward the cylinder jackets (8)(8), and the paired left and right cooling water induction portions (13)(13) are constructed by spreading a pair of fore and rear cooling water guiding plates (14)(14) projected leftward and rightward, along the respective external circumferential surfaces (3a) (3a) of adjacent fore and rear cylinders (3)(3).