Jib load limiting device

US6843383B2 · kind B2 · utility

Assignee

• National Crane Corporation · US

Inventors

• William Schneider · North Platte, US
• Max Fischer · Frankfurt, DE

Key dates

• Filing date: Feb 24, 2003
• Grant date: Jan 18, 2005
• Expiry date: Jul 13, 2023

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B66C23/66
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A load limiting device for a jib extension includes a pivotal insert adjacent the tip of the jib extension, a cable sheave mounted on the insert, a force measuring device for measuring forces imposed upon the insert by a load on the cable, an angle transducer for measuring the angle of orientation, and means for determining, based upon such force and angle of orientation, the load on the jib extension.