Pressure plate assembly for a friction clutch

US6755294B2 · kind B2 · utility

Assignee

• ZF Sachs AG · DE

Inventors

• Erwin Ziegler · Greßthal, DE
• Reinhold Weidinger · Unterspiesheim, DE
• Frank Hirschmann · Niederwerrn, DE
• Klaus Steinel · Bergrheinfeld, DE
• Wolfram Hick · Schwanfeld, DE
• Norbert Lohaus · Schweinfurt, DE
• Joachim Lindner · Schweinfurt, DE

Key dates

• Filing date: Sep 30, 2002
• Grant date: Jun 29, 2004
• Expiry date: Sep 30, 2022

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16D13/757
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A pressure plate assembly for a friction clutch, which assembly includes a housing; a pressure plate connected to the housing for rotation in common around an axis of rotation and which is free to move axially with respect to the housing; a stored-energy device, which pretensions the pressure plate in the axial direction with respect to the housing; a wear-compensating device which acts in the path of support between the stored-energy device and at least one of the housing and the pressure plate and comprises at least one wear-compensating element which is free to move when wear occurs and/or when wear is compensated; an indicator arrangement, comprising at least one indicator opening in the housing and at least one indicator element on a wear-compensating element. The indicator element at least partially fills at least one indicator opening in at least one state of wear; information concerning the amount of wear which has occurred can be derived from the position of the indicator element relative to the minimum of one indicator opening.