Method of manufacturing microvalves

US5096643A · kind A · utility

Assignees

• Burkert GmbH Werk Ingelfingen · DE
• Kernforschungszentrum Karlsruhe GmbH · DE

Inventors

• Bernd Kowanz · Öhringen, DE
• Dirk Schmidt · Königstein, DE
• Wolfgang Ehrfeld · Karlsruhe, DE

Key dates

• Filing date: May 23, 1990
• Grant date: Mar 17, 1992
• Expiry date: May 23, 2010

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/86734
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

The plate-like valve elements (10 and 20) of the microvalve are provided with a plurality of valve seats and, respectively, corresponding valve members. The sealing surfaces of a secondary valve element (10) are respectively formed by molding to copy the sealing faces of a primary valve element (20) so that the sealing surfaces of both valve elements are completely complementary to each other. The sealing surfaces need no further processing such as machining. Despite liberal tolerances of manufacture a high precision register of the valve elements in relation to each other is ensured.