Particulate material intercepting arrangement for a hand held tool

US4207953A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Wilbert Reibetanz · Leinfelden, DE
• Horst Sigg
• Herbert Wiesner · Leinfelden, DE
• Karl Wanner · Echterdingen, DE
• Gernot Hansel · Stuttgart, DE
• Karl Seitz · Oberwil, CH
• Manfred Bleicher

Key dates

• Filing date: Dec 22, 1977
• Grant date: Jun 17, 1980
• Expiry date: Dec 22, 1997

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T408/21
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A dust-intercepting member is so mounted on a hand-held power tool as to contact a structure being acted upon around the tool element of the power tool, by a mounting arrangement which includes two hollow elongated mounting members one of which is received within the other for telescoping relative thereto while being retained against rotation with respect to the other mounting member about the common axis of the mounting members, and a helical compression spring the ends of which are respectively received in the interiors of the mounting members and urge the latter in opposite directions. The other mounting member is attached to an auxiliary hand grip which, in turn, is mounted on a cylindrical extension of the housing by a quick-release clamping arrangement. A setting ring on the inner one of the mounting members determines the depth of penetration of the tool element into the structure. A depth-determining profiled rod is displaceably and arrestably mounted on the auxiliary hand grip. The outer one of the mounting members is connected to the profiled rod when the intercepting arrangement is mounted on the auxiliary hand grip.