Dust and chip removal device comprising a dust and chip retaining device

US6830507B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Doris Reich · Stuttgart, DE
• Steffen Wuesch · Holzgerlingen, DE
• Siegfried Keusch · Deizisau, DE

Key dates

• Filing date: May 2, 2003
• Grant date: Dec 14, 2004
• Expiry date: May 2, 2023

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B24B23/00
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A dust and chip removal device for sanding hand power tools has a storage container securable to a hand power tool, a transport channel via which dust and chips are directed into the storage container, a retaining element preventing the dust and chips from flowing back out of the storage container, the retaining element having at least one passage, an elastic element which has a holding force closing the at least one passage, the passage being openable automatically against the holding force at starting at a certain delivery pressure, while the elastic element automatically closes the passage below a certain delivery pressure, and a channel having cross-sectional area which tapers toward the passage.