Trimmer line spool for a trimmer head

US12290022B2 · kind B2 · utility

Assignee

• Andreas Stihl AG & Co. KG · DE

Inventors

• Sebastian Schmidt · Kirchheim, DE
• Simon Haug · Waiblingen, DE
• Sebastian Zappe · Kirchberg an der Murr, DE
• Christoph Brenner · Steyr, AT
• Achim Rethaber · Stuttgart, DE
• Björn Petersen · Berlin, DE
• Stefan Buchner · Nesselwang, DE

Key dates

• Filing date: Nov 30, 2020
• Grant date: May 6, 2025
• Expiry date: May 28, 2041

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A01D34/4168
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A trimmer line spool has first and second spool chambers for a trimmer line. First and second holder pairs are provided. The first holder pair has first and second trimmer line holders associated with the first spool chamber and the second spool chamber, respectively. The second holder pair has first and second trimmer line holders associated with the first spool chamber and the second spool chamber, respectively. The trimmer line holders of the first holder pair each have a first opening for the trimmer line. The trimmer line holders of the second holder pair each have a second opening for the trimmer line. A diameter of the first openings is larger than a diameter of the second openings. The first openings are positioned at an angle of 150° to 210° to each other. The second openings are positioned at an angle of 150° to 210° to each other.