Patent · US Active

Volume flow regulating valve for a hydraulic system for controlling a belt-driven conical-pulley transmission

US8485212B2 · kind B2 · utility

1Cited by

10References

11Claims

0Family size

Assignee

Schaeffler Technologies AG & Co. KG · DE

Inventors

Roshan Willeke · Karlsruhe, DE
Eric Muller · Contz-les-Bains, FR

Key dates

Filing date	Jul 12, 2008
Grant date	Jul 16, 2013
Priority date	—
Expiry date	Mar 6, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/2642
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A volume flow regulating valve for a hydraulic system for controlling a belt-driven conical-pulley transmission. The valve includes a control piston with a pressure surface and an oppositely facing pressure return surface. A supply segment is associated with the pressure surface, and a cooler return segment is connectable with the supply segment by a control edge of the control piston. A pressure return segment is associated with the pressure return surface, and a pressurizing segment is situated between the cooler return segment and the pressure return segment.

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