Patent · US Expired

Nozzle clamping nut for injection valves and method for producing said nozzle clamping nut

US7475829B2 · kind B2 · utility

2Cited by

22References

19Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Rainer Hardt · Höhr-Grenzhausen, DE
Gunter Lewentz · Regensburg, DE
Dieter Marksteiner · Regensburg, DE

Key dates

Filing date	Jul 19, 2004
Grant date	Jan 13, 2009
Priority date	—
Expiry date	Oct 30, 2025

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M61/16
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A nozzle clamping nut for an injection valve comprises two sections in the longitudinal direction, having different-sized free inner diameters (D1, D2). A shoulder forms a bearing surface (9) in a transition region between the first and second sections, extending in a circular manner perpendicularly to the longitudinal direction. The nozzle clamping nut has a large bearing surface with low stress concentration. The nozzle clamping nut consists of an inner tube (3) and an outer tube (1) which have different-sized inner diameters (D1, D2), which fit inside each other and which are connected to each other in a fixed manner, and the bearing surface (9) is formed by the annular front surface of the inner tube (3).

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