Joint structure for joining a branch member to a high pressure fuel rail
US5667255A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 27, 1995 |
| Grant date | Sep 16, 1997 |
| Priority date | — |
| Expiry date | Jun 27, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L41/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A joint structure for joining a branch member to a high pressure fuel rail which automatically aligns a spigot head of the branch member, if offset, upon tightening of a bolt and increases the rigidity of the spigot head to provide a sufficient degree of mechanical strength so that the spigot head can positively be "seated", and which insures connection between the branch member and the fuel rail if a fuel under substantially high pressure repeatedly flows over a prolonged period of time and if piping is subject to vibration and is free from leakage. In this joint structure, the branch member includes a spherical spigot end surface at its distal end, an annular flange axially spaced away from the spigot end surface, and a conical surface converging from the annular flange toward the spigot end surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.