Patent · US Expired

Method and device for preventing or releasing a blocking caused by logs fed to a chipper through a feeding chute

US6164350A · kind A · utility

2Cited by

8References

9Claims

0Family size

Assignee

Andritz-Patentverwaltungs-GmbH · AT

Inventors

Anders Olofsson · Bissenkamp, SE
Ulf Perhson · Bissenkamp, SE

Key dates

Filing date	Oct 14, 1999
Grant date	Dec 26, 2000
Priority date	—
Expiry date	Oct 14, 2019

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB27L11/002
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

Method and apparatus for preventing or releasing a blockage occurring in a flow of tree trunks supplied to a wood chipper via a feed hopper and for securing an uninterrupted flow of timber to the chipper. At least one lifting arm is insertable to project through an opening defined in a hopper. The lifting arm is inserted to raise tree trunks wedged in the hopper and release blockages. The duration of the lifting arm insertion is controlled momentarily for limiting the amount of tree trunks supplied to the chipper.

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