Motor chain saw with plural clutches and a brake

US3958680A · kind A · utility

Assignee

• Andreas Stihl Maschinenfabrik

Inventors

• Herbert Armbruster · Waiblingen, DE
• Wolfgang Schilling
• Dieter Wieland · Neckarrems, DE

Key dates

• Filing date: Dec 23, 1974
• Grant date: May 25, 1976
• Expiry date: Dec 23, 1994

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16D67/00
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A motor chain saw with a driving sprocket wheel adapted to be driven by a motor through the intervention of a centrifugal clutch, or the like. A safety clutch is arranged in the driving connection between the motor shaft and the driving sprocket and disengageable by a release mechanism. The safety clutch includes at least one disengageable follower member for interconnecting the two pertaining clutch members while being coaxially arranged with the centrifugal clutch and being located adjacent thereto. The safety clutch is arranged on that side of said centrifugal clutch which faces toward the driving sprocket while being located in the driving connection between the centrifugal clutch and the driving sprocket.