| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 144340100 | Tree felling | 7 |
| 20100071808 | ROTATION SYSTEM FOR A FELLING HEAD - A rotation system for a felling head mounted to a boom, the rotation system including: an adapter which is pivotally mounted to the boom; a housing fixed to the adapter; a gear system enclosed between the housing and the felling head and operable to allow the felling head to rotate with respect to the housing about an axis of rotation; and a plurality of actuators mounted to the housing and engaging the gear system, the plurality of actuators being operable to drive the rotation of the felling head, the plurality of actuators engaging the gearing system at positions below the axis of rotation so as to provide a vertical support therefor. | 03-25-2010 |
| 20120018043 | FELLER DEVICE FOR FELLING AND DELIMBING OF TREE TRUNKS, AND A DELIMBING BLADE - A feller device for felling and delimbing of tree trunks, as well as a delimbing blade device for delimbing of tree trunks, is disclosed. The delimbing blade device comprises: a delimbing blade having a cutting edge for delimbing of a tree trunk; a first joint, by means of which the delimbing blade can be connected to the felling device in a rotatable manner; a cylinder actuator, by means of which the delimbing blade can be moved into at least two different positions; and a second joint, by means of which the cylinder actuator is coupled to the delimbing blade. In a first example, the cylinder actuator can be placed almost parallel to a line extending via the first joint and the second joint so that the cylinder actuator and a third joint belonging to the same cylinder actuator for connection are placed in the area between the first and the second joint. In a second example, the cylinder actuator is coupled to the front surface of the felling device so that all the said joints are placed on the same side of the front surface. | 01-26-2012 |
| 20130240086 | Portable Directional Tree Feller - A portable directional tree feller is an apparatus used to brace a tree that is being felled and to control it is lowered to the ground. The apparatus comprises a trunk cradle, a notch hinge, a stump cradle, an actuator, a counterfort, and a ground support. The trunk cradle braces the cut portion of a felled tree, and the stump cradle braces the rooted portion of the felled tree. The trunk cradle is pivotally connected to the stump cradle by the notch hinge. The ground support is used to brace the apparatus against the ground and is perpendicularly connected the stump cradle. The counterfort is used to buttress the right angle created between the ground support and the stump cradle. The actuator is pivotally connected to both the ground support and the trunk brace and provides the mechanical power to raise and lower the cut portion with trunk brace. | 09-19-2013 |
| 144340500 | Shear | 4 |
| 20090065094 | Shear linkage device - The invention is directed to a shear device. The shear device comprises two mounting plates that form a first cutting member that is pivotally coupled to a second cutting member to facilitate moving the shear device between open and closed positions. The shear device further includes an extension arm extending from the mounting plates and pivotally connected to a rocker linkage device. An actuator is coupled to the first cutting member. The actuator has a piston slideably engaged in a cylinder, which is coupled to the rocker linkage device. The rocker linkage device is configured to pivot about the extension arm as the piston extends from the cylinder and to transfer force from the piston to a secondary linkage bar. The secondary linkage bar is configured to further transfer force to the second cutting member. | 03-12-2009 |
| 20110197998 | Shear Type Tree Cutter - A shear type tree cutter assembly is adapted to be mounted on a four wheel field vehicle. The assembly includes an anvil with a concave section for supporting the trunk of a tree. The blade portion has a convex portion that cooperates with the concave section of the anvil to shear the tree. The blade and anvil section also may include a straight portion useful for pruning brush and small limbs. | 08-18-2011 |
| 20110232804 | Shear linkage device - The invention is directed to a shear device. The shear device comprises two mounting plates that form a first cutting member that is pivotally coupled to a second cutting member to facilitate moving the shear device between open and closed positions. The shear device further includes an extension arm extending from the mounting plates and pivotally connected to a rocker linkage device. An actuator is coupled to the first cutting member. The actuator has a piston slideably engaged in a cylinder, which is coupled to the rocker linkage device. The rocker linkage device is configured to pivot about the extension arm as the piston extends from the cylinder and to transfer force from the piston to a secondary linkage bar. The secondary linkage bar is configured to further transfer force to the second cutting member. | 09-29-2011 |
| 20120037275 | Tree processing head - A tree processing head for processing a tree element. The tree processing head includes: a body; a scissor assembly mounted to the body and a chainsaw assembly also mounted to the body. The scissor and chainsaw assemblies are selectively usable individually or cooperatively to process the tree element. | 02-16-2012 |
