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:
Jun. 18, 1996
Filed:
May. 22, 1995
Izumi Sugiyama, Saitama-ken, JP;
Yoshihito Tsuji, Saitama-ken, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
An oil pan for an internal combustion engine is made of cast aluminum alloy and has a first flange for attachment to the cylinder block and a second annular flange for attachment to the transmission case. Access holes near a bottom end of the second annular flange allow access to the heads of mounting bolts extending through the first flange. The first flange can be securely clamped to the opposing mounting of the cylinder block because all of the mounting bolts can directly clamp the first flange onto the mounting surface. Annular ribs surround the access holes and are connected together by a connecting rib so as to ensure a sufficient rigidity of the second flange. As a result, the sealing performance can be readily ensured and a vibration free power structure can be achieved.