Master cylinder

US6470791B1 · kind B1 · utility

Assignee

• LuK Lamellen und Kupplungsbau Beteiligungs KG · DE

Inventors

• Roland Welter · Laufenburg (Baden), DE
• Peter Schaaf · Neustadt an der Aisch, DE
• Peter Giese · Herzogenaurach, DE
• Ludwig Winkelmann · Erlangen, DE
• Gerhard Meyer · Lehrberg, DE

Key dates

• Filing date: May 25, 2000
• Grant date: Oct 29, 2002
• Expiry date: May 25, 2020

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16D2025/081
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A master cylinder for the clutch or brake of a motor vehicle has a housing for a reciprocable piston one end of which receives the spherical head of a reciprocable piston rod. The head is held in a desired position relative to the piston by a one-piece or composite coupling device having a first section exerting a pull or bearing upon the head of the piston rod and a second section which is confined in or surrounds the end of the piston and urges the first section in a direction to hold the piston rod against axial movements relative to the piston. The coupling device and/or the piston are or can be made of a plastic material, and the connection between such parts is or can be established by snap action.