Rubber spring element

US5110660A · kind A · utility

Assignee

• Woco Franz-Josef Wolf & Co. GmbH · DE

Inventors

• Franz J. Wolf · Salmünster, DE
• Hubert Pletsch · Salmünster, DE

Key dates

• Filing date: Dec 21, 1989
• Grant date: May 5, 1992
• Expiry date: Dec 21, 2009

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31826
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

In order to obtain a particularly soft spring characteristic the rubber spring element consisting of relatively hard material having good mechanical strength is traversed by cavities and hollow channels, which intersect said cavities, in such a manner that the area of the inside cross-section of the hollow channels amounts to at least 25% of the area of the largest inside cross-section of the nearest cavity traversed by this hollow channel, while the hollow channels may directly intersect in the rubber matrix.