Hand-held circular saw

US5146682A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Hans Blochle · Stans, CH
• Rainer Schilling
• Martin E. Kummer · Auburn, US
• Eduard Gansel · Waldenbuch, DE
• Heribert Schramm · Stuttgart, DE
• Helmut Eblen · Stuttgart, DE
• Joachim Muller · Metzingen, DE

Key dates

• Filing date: May 31, 1991
• Grant date: Sep 15, 1992
• Expiry date: May 31, 2011

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B23Q11/005
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A hand-held circular saw is designed so that a fan exhaust air from a fan wheel is introduced into a sawdust duct along the shortest path in a duct arranged inside a gearing housing, in order to reinforce a conveying of saw dust in the sawdust duct. The fan air is fed parallel to the movement direction of the sawdust, effects a vacuum in the sawdust duct and prevents stoppage of the duct.