Structure of an exhaust manifold branch collecting portion
US5727386A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 2, 1996 |
| Grant date | Mar 17, 1998 |
| Priority date | — |
| Expiry date | Apr 2, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N2450/22
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A collecting portion for an exhaust manifold branch where a combined pipe portion including a plurality of pipes is welded to a collecting pipe wherein, (1) an intermediate member is provided between the combined pipe portion and the collecting pipe, (2) the collecting pipe has a portion that extends upstream, (3) a weld line formed at the downstream end of a partitioning wall is axially zigzagged, (4) a weld line is offset from the downstream surface of the combined pipe portion, (5) only one of the partitioning walls is curved, (6) downstream ends of the partitioning walls are smoothly convex, (7) an additional weld is formed in the partitioning wall, or (8) an intermediate member is welded at a half circumference of the combined pipe portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.