Patent · US Active

Method of operating a crane

US7395940B2 · kind B2 · utility

2Cited by

1References

20Claims

0Family size

Assignee

LIEBHERR-WERK EHINGEN GMBH · DE

Inventors

Peter Abel · Berea, US
Helmut Spaeth · Heroldstatt, DE

Key dates

Filing date	Jul 26, 2006
Grant date	Jul 8, 2008
Priority date	—
Expiry date	Jul 30, 2026

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB66C15/00
WIPO fieldHandling
WIPO sectorMechanical engineering

Abstract

The present disclosure relates to a method of operating a crane whose safe working load depends on one or more changeable parameters, with the change of at least one of the parameters being made such that the speed of the parameter change is reduced continuously or step-wise before a parameter value is reached at which the safe working load corresponds to the actual working load.

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