Guide bar for a motor chainsaw and method for producing a guide bar

US11485040B2 · kind B2 · utility

Assignee

• Andreas Stihl AG & Co. KG · DE

Inventors

• Thomas Lux · Welzheim, DE
• Martin Leiendecker · Göppingen, DE
• David Mitrega · Winnenden, DE

Key dates

• Filing date: Jul 24, 2020
• Grant date: Nov 1, 2022
• Expiry date: Feb 5, 2041

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P10/25
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A guide bar for motor chainsaws has side plates and a middle section between the side plates connected fixedly and non-movably to the side plates. The side plates form a clamping section and a deflection section opposite the clamping section. A guide groove extends circumferentially about the guide bar. The middle section forms the guide groove bottom in the deflection section. A guide bar tip is located where the longitudinal center axis of the guide bar intersects the deflection section. The side plates each have a guide surface extending continuously across a first longitudinal side of the guide bar, the deflection section, and a second longitudinal side of the guide bar. The guide surfaces of the side plates have hardened regions at the first and second longitudinal sides and at the guide bar tip with a hardness greater than a hardness of a middle region of the side plates.