Patent · US Expired

Apparatus for trimming plants

US4285127A · kind A · utility

26Cited by

1References

25Claims

0Family size

Assignee

Andreas Stihl AG & Co. KG · DE

Inventors

Gerhard Zerrer · Bad Marienberg, DE
Roland Beier · Eßlingen, DE

Key dates

Filing date	Jun 28, 1979
Grant date	Aug 25, 1981
Priority date	—
Expiry date	Jun 28, 1999

Classification

Technology area (CPC A)Human Necessities
CPC primaryA01D34/4162
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

Apparatus for trimming plants, which apparatus includes at least one handle and a rotating, powered trimming head, which trimming head includes at least one flexible, filament-type trimming element, especially a synthetic or plastic filament or thread end-section, extending beyond the periphery of the housing for the trimming head, which trimming element is wound on a spool provided in the housing. The end-section can be adjusted by a predetermined amount during operation of the apparatus by the intervention of a coupling element whereby the spool is rotated relative to the housing through a predetermined angle, with the coupling element being movable from a lock position to a release position by means of centrifugal forces.

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