Patent · US Expired

Method of producing a control valve assembly

US6692675B2 · kind B2 · utility

1Cited by

13References

8Claims

0Family size

Assignee

Filterwerk Mann & Hummel GmbH · DE

Inventors

Joachim Schraudolf · Heilbronn, DE
Klaus Rentschler · Traunreut, DE
Helmut Neuschwander · Ludwigsburg, DE

Key dates

Filing date	Jun 25, 2002
Grant date	Feb 17, 2004
Priority date	—
Expiry date	Aug 2, 2022

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49314
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A method for producing a control valve assembly using a mold comprising an upper mold half (20) and a lower mold half (21). A shaft (11) with premounted bearing blocks (13) or other functional components is placed in the mold, and the control valves subsequently are injection-molded on the shaft (11) in cavities (22) via feeders (23) to produce the control valve assembly. Afterward, the bearing blocks (13) can no longer be detached. Because they are produced separately, the bearing blocks can have a complex geometry. This allows a considerable degree of freedom in the geometric design of the control valve assembly while nevertheless ensuring cost-effective production.

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