Diaphragm spring for a friction clutch

US6918479B2 · kind B2 · utility

Assignee

• ZF Sachs AG · DE

Inventors

• Martin Pahrisch · Hallstadt, DE
• Ronald Beck · Heidenheim, DE
• Alfred Schraut · Waigolshausen, DE
• Erwin Ziegler · Greßthal, DE
• Frank Hirschmann · Niederwerrn, DE

Key dates

• Filing date: Aug 11, 2003
• Grant date: Jul 19, 2005
• Expiry date: Aug 11, 2023

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16D13/583
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A diaphragm spring for a friction clutch includes a ring-like body area and a plurality of spring tongues arranged at the inner edge in a row in a circumferential direction and extending radially inward from the body area. Openings are formed between adjacent spring tongues, each opening having a radially outer base area, at least one of the openings being limited in the circumferential direction by a wall area having a curvature which increases as the wall proceeds from the base area.