Patent · US Expired

Hydraulic support element for a valve gear mechanism of an internal combustion engine

US5979377A · kind A · utility

11Cited by

7References

7Claims

0Family size

Assignee

INA Wälzlager Schaeffler oHG · DE

Inventors

Werner BARTH · Herzogenaurach, DE
Arndt Ihlemann · Herzogenaurach, DE
Dieter Schmidt · Steinhagen, DE

Key dates

Filing date	May 28, 1998
Grant date	Nov 9, 1999
Priority date	—
Expiry date	May 28, 2018

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01L2303/00
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A sleeve-like element (14) is arranged inside a hydraulic support element to secure against drainage. In axial direction, the sleeve-like inner element (14) bears a shoulder (13) of a piston (4), formed by a rolled-in step (12). In this manner, the inner element (14) can be secured while the piston (4) maintains a uniform wall thickness.

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