Digging or gripping tool

• US 20060048851A1
• Filed: 09/02/2005
• Published: 03/09/2006
• Est. Priority Date: 09/06/2004
• Status: Active Grant

• Current Assignee: Liebherr-Hydraulikbagger GmbH (Liebherr-International AG)
• Original Assignee: Liebherr-Hydraulikbagger GmbH (Liebherr-International AG)
• Inventors: Wager, Bernd
• Granted Patent: US 7,357,163 B2
• Time in Patent Office: Days
• US Class Current: 144/4.100
• CPC Class Codes: B66C 3/04 Tine grabs
• CPC Class Codes: E02F 3/404 comprising two parts movable relative to each other, e.g. for gripping
• CPC Class Codes: E02F 3/413 with grabbing device E02F3/404 takes precedence; with grab buckets moved by cables or hoisting ropes E02F3/47; grab equipment for cranes B66C

Abstract

This invention relates to a digging or gripping tool with at least one cutting edge, wherein rollers are disposed along the outer edge of the cutting edge in accordance with the invention.

Claims

1. A digging or gripping tool with a least one cutting edge, characterized in that along the outer edge of the cutting edge rollers are disposed.

2. The digging or gripping tool as claimed in claim 1, characterized in that on the outer edge of the cutting edge vertical webs are provided, between which the rollers are mounted.

3. The digging or gripping tool as claimed in claim 1, characterized in that it constitutes a clamshell grab whose opposed cutting edges are equipped with rollers.

4. The digging or gripping tool as claimed in claim 1, characterized in that it constitutes timber tongs, whose opposed cutting edges are provided with rollers.

5. The digging or gripping tool as claimed in claim 1, characterized in that the cutting edges are welded onto the foundation of the digging or gripping tool.