Leveling apparatus for excavator and forestry machine equipment

Land vehicles – Body elevation or tilt – Terrain slope compensation

Reexamination Certificate

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Details

C180S089150

Reexamination Certificate

active

07832740

ABSTRACT:
A leveling apparatus for excavator and forestry machine equipment. The leveling apparatus is mounted between an upper swing structure and a lower frame formed on a lower driving structure including a swing bearing, left and right track chassis, and a front arm and a rear arm connected to upper parts of the track chassis. The leveling apparatus can keep a horizontal level of the upper swing structure against an inclined ground.

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patent: 6135225 (2000-10-01), Barsic
patent: 6173973 (2001-01-01), Robinson
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patent: 6609581 (2003-08-01), Vaile
patent: 2009/0314566 (2009-12-01), Rust
patent: WO 99/01329 (1999-01-01), None

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