Hydraulic pressure reservoir

US7918245B2 · kind B2 · utility

Assignee

• LuK Lamellen und Kupplungsbau Beteiligungs KG · DE

Inventors

• Martin Staudinger · Ettlingen, DE
• Marco Grethel · Frebershausen, DE
• Felix Dreher · Waldkirch, DE
• Franz Benz · Achern, DE

Key dates

• Filing date: Apr 1, 2008
• Grant date: Apr 5, 2011
• Expiry date: Feb 22, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/86043
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A hydraulic pressure reservoir having at least one pressure chamber formed between two opposed, movable inner boundary members. Each inner boundary members includes a spring cover and a diaphragm spring. An outer boundary member peripherally surrounds the movable inner boundary members and has a U-shaped cross section along at least a part of its periphery to axially support the diaphragm springs in a fixed axial position. The outer boundary member can be formed in several pieces that are held together by interconnections or by a surrounding outer tensioning member.