Patent · US Active

Hydraulic transmission valve

US8791780B2 · kind B2 · utility

3Cited by

12References

19Claims

0Family size

Assignee

Hillte Germany GmbH · DE

Inventors

Drazen Boban · Leverkusen, DE
Bernd Franz · Stuttgart, DE
Thomas Jacob · Stuttgart, DE
Andreas Knecht · Herrenberg, DE
Dieter Maisch · Dessau, DE
Hartmut Weber · Altdorf, DE

Key dates

Filing date	Jul 14, 2012
Grant date	Jul 29, 2014
Priority date	—
Expiry date	Aug 2, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH01F2007/085
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to a hydraulic transmission valve with a magnetizable housing which is integrally configured in one piece with a pole core cone. The transmission valve according to the invention facilitates comfortably coupling in particular startup clutches, shifting clutches or synchronization clutches in a friction locking manner. Still using a transmission valve of this type is facilitated for fewer to no transmission oil changes. Furthermore a transmission valve of this type can also be used in countries with inferior transmission oil quality. The housing includes a connection. The connection defines an anchor stroke and a concentric arrangement between the pole core cone and a pole tube. Thus, the pole tube is fixated the magnetizable pole flange. An anchor that is exclusively supported in the pole tube is magnetically separated from the pole tube through a separation layer with a thickness of 0.01 mm to 0.06 mm.

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