Patent · US Active

Two stage check valve for automatic transmission system

US8043186B2 · kind B2 · utility

3Cited by

12References

17Claims

0Family size

Assignee

Schaeffler KG · DE

Inventors

Ross A. Gresley · Tega Cay, US
Eric John Nelson · Rochester, US

Key dates

Filing date	Feb 4, 2008
Grant date	Oct 25, 2011
Priority date	—
Expiry date	Aug 26, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/7867
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

The two stage check valve for the automatic transmission system provides a first member that opens in response to a first pressure and a second member which opens in response to a second pressure where the second pressure is higher than the first pressure.

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