Patent · US Active

Hydrodynamic clutch device

US7588130B2 · kind B2 · utility

4Cited by

14References

9Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Michael Heuler · Würzburg, DE
Jurgen Ackermann · Bensberg, DE
Thomas Adelmann · Retzstadt, DE
Christoph Gajda · Schweinfurt, DE

Key dates

Filing date	Mar 14, 2006
Grant date	Sep 15, 2009
Priority date	—
Expiry date	Jan 3, 2027

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H2045/0284
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A hydrodynamic clutch device includes a pump wheel, a housing connecting the pump wheel to a drive, a turbine wheel connected to a takeoff, the turbine wheel being located in the housing and cooperating with the pump wheel to form a hydrodynamic circuit, and a bridging clutch located in the housing and having a piston located between the hydrodynamic circuit and a pressure space. The piston is movable between an engaged position and a released position. At least one through opening in the piston allows an exchange of clutch fluid between the hydrodynamic circuit and the pressure space regardless of the position of the piston and a non-return valve allows only flow from the hydrodynamic circuit to the pressure space when the clutch is released.

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