Throttle trigger device for an internal combustion engine of a working tool

US5544544A · kind A · utility

Assignee

• Andreas Stihl · DE

Inventors

• Klaus Hoppner · Erbach, DE
• Bernd-Ulrich Kaiser

Key dates

• Filing date: Dec 14, 1994
• Grant date: Aug 13, 1996
• Expiry date: Dec 14, 2014

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/2063
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A throttle trigger device for an internal combustion engine of a working tool has a throttle trigger connected to the handle of the working tool so as to be pivotable about a pivot axis. A throttle trigger lock is connected to the handle of the working tool so as to be pivotable about a pivot axis. A spring is connected between the throttle trigger and the throttle trigger lock. The throttle trigger, the throttle trigger lock, and the spring form a unitary part. The spring rests at an abutment of the handle at least when under load such that the spring is divided into functionally independent sections, whereby a first section extends between the abutment and the throttle trigger and a second section extends between the abutment and the throttle trigger lock.