Patent · US Active

Camshaft with contrarotating cams for automotive engines in particular

US7431002B2 · kind B2 · utility

4Cited by

4References

9Claims

0Family size

Assignee

Mahle International GmbH · DE

Inventors

Hermann Hoffmann · Echterdingen, DE
Martin Lechner · Lindlar, DE
Falk Schneider · Neuerburg, DE

Key dates

Filing date	Jan 30, 2006
Grant date	Oct 7, 2008
Priority date	—
Expiry date	Mar 28, 2027

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T74/2102
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A camshaft has contrarotating cams for automotive engines, in which an inside shaft and an outside shaft are arranged concentrically so they are contrarotating, at least one cam has at least one main cam element that can be placed radially on the outside shaft and is supported there so it can rotate. The main cam element is connected to the inside shaft in a manner that is rotationally locked via a fastener passing through a recess in the outside shaft. Further features include a fastener, a main cam element and a locking means. The fastening of the main cam element to the inside shaft is provided by widening the outside diameter of the fastener by the locking means with a resulting tightly seated connection between the fastener and the inside shaft, and the fastener and the locking means.

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