Woodworking – Special-work machine – Tree felling
Reexamination Certificate
2007-07-17
2007-07-17
Miller, Bena (Department: 3725)
Woodworking
Special-work machine
Tree felling
C144S004100, C144S003100
Reexamination Certificate
active
11529448
ABSTRACT:
A tree shear for use with a prime mover such as a skid-steer loader wherein the tree shear includes a pair of tree shear blades, having forward and rearward ends, which are secured to the forward end of a tree shear frame in a non-movable and fixed manner. The blades define a V-shaped opening therebetween for receiving a tree therebetween. The V-shaped opening decreases in width from the forward end of the blades to the rearward end of the blades. The trees are sheared by moving the prime mover so that the tree is received between the tree shear blades with the continued forward movement of the prime mover causing the tree to be sheared and received within a grapple arm assembly.
REFERENCES:
patent: 3640322 (1972-02-01), Allen
patent: 3915211 (1975-10-01), Barwise
patent: 3999582 (1976-12-01), Allen et al.
patent: 4050488 (1977-09-01), Albright
patent: 4147191 (1979-04-01), Giese
patent: 4210183 (1980-07-01), Nilsen
patent: 6453957 (2002-09-01), Devaney
patent: 6662836 (2003-12-01), Andersen
patent: 6901978 (2005-06-01), Simpson
Miller Bena
Thomte Dennis L.
Thomte, Mazour & Nieberall
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