Patent · US Active

Roller finger follower for valve deactivation

US7909007B2 · kind B2 · utility

22Cited by

0References

13Claims

0Family size

Assignee

Schaeffler KG · DE

Inventors

Debora Manther · Royal Oak, US
Yunshan Liu · Rochester Hills, US
Anna Strehlau · Windsor, US
Richard Best · Orem, US
Xiaopo Ma · Aurora, US

Key dates

Filing date	Dec 4, 2008
Grant date	Mar 22, 2011
Priority date	—
Expiry date	Sep 28, 2029

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01L2305/00
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The finger follower has an inner and outer body and a torsional lost motion spring positioned at its lash adjuster end of the outer body. The torsional lost motion spring has two helical parts each with a short leg that abuts the outer body and a long leg that contacts the inner body. The torsional spring is located above the pivot point of the finger follower so as to provide a low mass moment of inertia and to reduce the weight over the valve stem end of the follower.

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