Patent · US Expired

Portable handheld motor-driven tool

US4817738A · kind A · utility

25Cited by

2References

8Claims

0Family size

Assignee

Andreas Stihl · DE

Inventors

Wolfgang C. Dorner · Oconomowoc, US
Michael Leuchte · Stuttgart, DE
Klaus Brockel · Rottenburg am Neckar, DE

Key dates

Filing date	Aug 12, 1987
Grant date	Apr 4, 1989
Priority date	—
Expiry date	Aug 12, 2007

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16F15/10
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A portable handheld motor-driven tool such as a brushcutter or the like drives a work tool via a drive shaft. The drive shaft is coupled to the motor shaft and is journalled in the motor housing by means of damping member. The respective longitudinal axes of the motor shaft and drive shaft are displaced with respect to each other to prevent vibrations during operation of the motor-driven tool.

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