Tree trimming apparatus

Woodworking – Process – Timber harvesting or processing

Reexamination Certificate

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Details

C144S208200, C144S024130

Reexamination Certificate

active

11017801

ABSTRACT:
“A tree trimming device that automatically climbs a tree or other vertical member and shears limbs or debris as it climbs has an anchor structure with substantially horizontal clamps, a cutting assembly with substantially horizontal clamps, vertical connecting pistons, and a cutting blade assembly.”

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patent: 6474377 (2002-11-01), Van De Mortel
patent: 6672346 (2004-01-01), Heckmaier

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