Patent · US Expired

Intake pipe for an internal combustion engine comprising at least two welded shells

US6807935B2 · kind B2 · utility

2Cited by

6References

7Claims

0Family size

Assignee

MANN+HUMMEL GmbH · DE

Inventors

Herbert Pietrowski · Pleidelsheim, DE
Arthur Klotz · Willow Grove, US
Ingo Koch · Hameln, DE
Matthias Teschner · Ludwigsburg, DE

Key dates

Filing date	Apr 11, 2003
Grant date	Oct 26, 2004
Priority date	—
Expiry date	Apr 21, 2023

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29L2031/7492
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

An intake pipe (10) for an internal combustion engine composed of shells (11a, 11b) in which the geometry of the joining surfaces (19) adopts an approximately stepped course in areas with a slight incline relative to to joining force (F). This produces areas with a greater or lesser inclination relative to a joint line (16) indicating the average inclination of the joining surfaces. This results in areas which can be welded with a high degree of stability because of their considerable incline towards the joining force. These areas can then support areas which are less inclined towards the joining force. This allows the shells (11a, 11b) to have strongly curved joining surfaces, which increases the geometric design freedom of the intake pipe and, in particular, makes it possible to manufacture intake pipes with strongly curved intake channels constructed from just two shells.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.