Patent · US Expired

Method for producing perforated valve spray disk

US5599466A · kind A · utility

4Cited by

20References

5Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Martin Maier · Asperg, DE
Norbert Belzner · Heilbronn, DE
Jorg Heyse · Markgröningen, DE
Christian Preussner · Markgröningen, DE

Key dates

Filing date	Jun 6, 1995
Grant date	Feb 4, 1997
Priority date	—
Expiry date	Jun 6, 2015

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M61/1853
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A method of making a conical spray opening for a perforated valve spray disk by electrical discharge machining. During electrical discharg machining by an electrode, particles are removed by flushing in a direction opposite the direction of electrical discharge machining and counterflushing by a second dielectric after the opening has been created in a direction opposite from the electrical discharge machining, resulting in the opening having a conical shape.

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