Patent · US Expired

Portable motor chain saw

US4370810A · kind A · utility

19Cited by

4References

19Claims

0Family size

Assignee

Andreas Stihl · DE

Inventors

Volker Schurr · Schwieberdingen, DE
Hans Nickel · Cottenweiler, DE
Klaus Hoppner · Erbach, DE
Gisbert Kohler · Fellbach, DE
Hermann Weiss · Hamburg, DE
Dieter Wieland · Neckarrems, DE

Key dates

Filing date	May 29, 1980
Grant date	Feb 1, 1983
Priority date	—
Expiry date	May 29, 2000

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16D59/00
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A portable motor chain saw with a braking device, for stopping the saw chain during recoil, and with a release, for the braking device, which in the release position is operatively connected with a locking mechanism of the braking device. The release is an inertial mass which is freely movable along an acceleration path, with the kinetic energy of the inertial mass in the release position being greater than the resistance force of the locking mechanism. The release is held in the ready position by at least one holder, preferably a spring which extends between the saw housing and the release.

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