Woodworking – Process – Timber harvesting or processing
Reexamination Certificate
2004-12-22
2008-09-09
Self, Shelley (Department: 3725)
Woodworking
Process
Timber harvesting or processing
C144S208200, C144S024130
Reexamination Certificate
active
07422041
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.”
REFERENCES:
patent: 2612724 (1952-10-01), Llewellyn
patent: 2727335 (1955-12-01), Susil
patent: 3117401 (1964-01-01), Talley
patent: 3356113 (1967-12-01), Del Perugia
patent: 3457973 (1969-07-01), Meier
patent: 3612117 (1971-10-01), Kjell
patent: 3690351 (1972-09-01), Strickland et al.
patent: 3708000 (1973-01-01), Duffty et al.
patent: 3720246 (1973-03-01), David
patent: 3870123 (1975-03-01), Izumi
patent: 4050485 (1977-09-01), Valo
patent: 4773455 (1988-09-01), Lessard
patent: 4793439 (1988-12-01), Crawford
patent: 5056258 (1991-10-01), Quinn
patent: 5301459 (1994-04-01), Eliachar et al.
patent: 5366521 (1994-11-01), Wootton
patent: 5438793 (1995-08-01), Eliachar et al.
patent: 6474377 (2002-11-01), Van De Mortel
patent: 6672346 (2004-01-01), Heckmaier
Crews John
Smith George E.
Hunton & Williams LLP
Self Shelley
LandOfFree
Tree trimming apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Tree trimming apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tree trimming apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3978491