Case member attachment structure

US12448934B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-12448934-B2
Application numberUS-202418809881-A
CountryUS
Kind codeB2
Filing dateAug 20, 2024
Priority dateNov 24, 2023
Publication dateOct 21, 2025
Grant dateOct 21, 2025

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  6. CPC / IPC classifications

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  7. Citations and related patents

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Abstract

Official abstract text for this publication.

A case member attachment structure, comprising: a first case member, a second case member attached to a first surface of the first case member; and a third case member attached to a second surface, which is a surface opposite to the first surface of the first case member, wherein the first case member and the third case member are fastened by a fastening member, and wherein in an extending direction of the first surface, a position at which the second surface and the fastening member are attached is located inside the first surface.

First claim

Opening claim text (preview).

What is claimed is: 1. A case member attachment structure comprising: a first case member; a second case member attached to a first surface of the first case member; a third case member attached to a second surface of the first case member that is opposite to the first surface; a bolt; and an oil filter, wherein the first case member and the third case member are fastened by the bolt, the second surface and a position where the bolt is attached are located on an inner side with respect to the first surface in an extending direction of the first surface, the first case member includes a first oil passage, the second case member includes a second oil passage, the third case member includes a third oil passage, the first oil passage, the second oil passage, and the third oil passage constitute a single oil passage, a first portion of the first case member surrounds a head of the bolt, the head and the first portion of the first case member being disposed within the first oil passage outside a main flow of oil in the first oil passage to avoid interfering with the main flow, the oil filter is provided upstream of the single oil passage, the bolt is located downstream of the oil filter, and the first case member is a first chain case and the second case member is a second chain case, and the third case member is a crankcase of an internal combustion engine.

Assignees

Inventors

Classifications

  • F02F7/0068Primary

    Adaptations for other accessories · CPC title

  • Arrangements of lubricant conduits · CPC title

  • Adaptations for fitting the engine, e.g. front-plates or bell-housings · CPC title

  • F02F7/0082Primary

    Mounting of engine casings · CPC title

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What does patent US12448934B2 cover?
A case member attachment structure, comprising: a first case member, a second case member attached to a first surface of the first case member; and a third case member attached to a second surface, which is a surface opposite to the first surface of the first case member, wherein the first case member and the third case member are fastened by a fastening member, and wherein in an extending dire…
Who is the assignee on this patent?
Toyota Motor Co Ltd
What technology area does this patent fall under?
Primary CPC classification F02F7/0068. Mapped technology areas include Mechanical Engineering.
When was this patent published?
Publication date Tue Oct 21 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).