Patent · US Active

Blade assembly of a hedge trimmer

US8713803B2 · kind B2 · utility

1Cited by

10References

18Claims

0Family size

Assignee

Andreas Stihl AG & Co. KG · DE

Inventors

Georg Heinzelmann · Winnenden, DE
Markus Hittmann · Waiblingen, DE

Key dates

Filing date	Feb 12, 2010
Grant date	May 6, 2014
Priority date	—
Expiry date	Sep 14, 2031

Classification

Technology area (CPC A)Human Necessities
CPC primaryA01G3/053
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A blade assembly of a hedge trimmer includes at least one cutting blade having cutting teeth. At least one portion of the cutting teeth are configured as protective teeth which, referred to the cutting blade axis, have an inner cutting region and from which an outer protective finger extends. The protective tooth is, referred to its tooth axis, configured unsymmetrically. The protective tooth has a cutting side and an opposite-lying holding side and a cutting edge in the cutting region on the cutting side and a holding edge on the holding side. The protective finger has a forward edge on the cutting side and a rearward edge on the holding side. Starting from the blade axis, the forward edge is inclined to the tooth axis and the rearward edge, starting from the blade axis, is inclined away from the tooth axis.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.