| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 144240130 | Tree delimbing | 19 |
| 20090025828 | Tree pruners - A tree pruner includes a rod and a fixed part is fixed to the rod and an arm has a first end pivotably connected to the fixed part. A spring is connected between the fixed part and a second end of the arm. A movable part has an end fixed to the arm and a mediate portion of the movable part is pivotably connected to the fixed part. A positioning seat is movably positioned on the rod and a stationary pulley is connected to the positioning seat. A movable pulley is connected to the arm and a rope reeves through the stationary pulley and the movable pulley. When pulling the rope, the arm is pivoted to move the movable part toward the fixed part to prune branches when the arm is pivoted. | 01-29-2009 |
| 20090065093 | Hydraulic Crane-Mounted Remotely-Controlled Lifting Device - The hydraulic crane-mounted remotely-controlled lifting device ( | 03-12-2009 |
| 20090255606 | LAND CLEARING DEVICE - A land clearing device for use in conjunction with a hydraulic boom crane includes a body ( | 10-15-2009 |
| 20090272462 | Double chain saw arrangement for trail clearing - A double chain saw arrangement which has diametrically oppositely extending chain saws powered by a single motor driving two sprockets on said hub, each engaged with an associated chain saw chains on each chain saw bar mounted to the hub. A series of hooked capture pieces project from one side of the chain saw bars in a plane parallel to the chain saw bars, which pieces act to cause brush and limbs to be captured and forced into contact with the saw chains to be cut thereby. | 11-05-2009 |
| 20090277536 | TREE CLIMBING AND TRIMMING DEVICE - A tree trimming apparatus may include a first frame portion and a second frame portion that are spaced apart from each other. Each frame portion may have a generally circular shape so that the entire frame of the apparatus may be positioned around the trunk of a tree. A vertical actuator connects the first and second frame portions and may operate to increase or decrease the distance between those portions. Further, a horizontal actuator may be positioned on each of the portions with each horizontal actuator operating to extend into the interior of each frame portion and engage a tree trunk. Additionally, a cutting device may be positioned on the first frame portion to assist in the cutting or trimming of the tree. | 11-12-2009 |
| 20100313999 | Delimb Arm Cam Stop - A timber-working head comprises a frame, first and second delimb arms pivotally coupled to the frame, and a single delimb cylinder operatively coupled to both the first delimb arm and the second delimb arm to pivot the first and second delimb arms relative to the frame to open and close them. The first and second delimb arms are otherwise operatively unconnected from one another allowing pivotal movement of each of the first and second delimb arms without corresponding pivotal movement of the other of the first and second delimb arms. The second delimb arm comprises a cam stop defining a variable closure point for the first delimb arm, and the first delimb arm is configured to pivot into closed engagement with the cam stop. | 12-16-2010 |
| 20100314000 | Protective Routing Of Delimb Cylinder Hosing - A timber-working head comprises a frame, first and second delimb arms pivotally coupled to the frame, a delimb cylinder, and delimb cylinder hosing. A torso of the frame comprises a box enclosure, and a hosing channel extending through a cavity of the box enclosure. The delimb cylinder is mounted to both the first delimb arm and the second delimb arm and operable to pivot the first and second delimb arms relative to the frame to open and close them. The delimb cylinder is oriented in its longitudinal dimension laterally relative to the torso, and is positioned in front of and floatable laterally relative to the torso. The delimb cylinder hosing is routed from the delimb cylinder through the hosing channel. The hosing channel expands laterally relative to the torso as the hosing channel extends along its length forwardly through the box enclosure. | 12-16-2010 |
| 20110048579 | Tree trimmer telescopic - A mechanism designed to remove difficult to reach overhead tree branches. All power is derived from a standard 120 volt AC outlet. It is pneumatically controlled in 2- axes thru a main column containing one or a plurality of concentric cylinders and a separate air cylinder for height and elevation control. An electric powered saw is mounted at the end of the highest telescoping section. A pressure/vacuum pump provides the required force. | 03-03-2011 |
| 20120018041 | HARVESTER HEAD - The invention relates to a harvester head that comprises the frame of the harvester head to be connected to the end of the hoist boom of a forest machine, a feeding device for moving a tree trunk, a front blade and/or upper delimbing blades before the feeding device, a cutting device for cutting trunks after the feeding device, as well as a lower delimbing blade between the feeding device and the cutting device, installed on the side of the cutting device in the frame of the harvester head. In the harvester head according to the invention, the lower delimbing blade is arranged to turn into a delimbing position around the tree trunk and into a space-saving position between the outer surface of the tree trunk and the frame of the harvester head, away from the path of the tree trunk. Furthermore, when in the space-saving position, the lower delimbing blade is between the outer surface of the tree trunk and the frame of the harvester head so that its end points in the direction of the frame of the harvester head, wherein at least part of it extends above the path of the tree trunk. | 01-26-2012 |
| 20130008563 | HAND-OPERATED SHEARS - For hand-operated garden shears, in particular tree-pruning shears, with a ratchet mechanism, it is proposed that, between a hand lever (H | 01-10-2013 |
| 20130074989 | POSITIONING SYSTEM - A positioning system for attachment to a vehicle for operation of a power tool by a ground-based operator sitting in the vehicle provides a telescoping mast attached to the vehicle, a pivot bracket connecting an upper arm to the upper portion of the telescoping mast, mounting means for mounting the power tool on the upper arm; and power means for operating the power tool from the operator's position in the vehicle. | 03-28-2013 |
| 20130327441 | DELIMB KNIFE WITH INTEGRATED SIDE BLADES - A timber-working head is configured to hold a felled tree and to feed the felled tree. The timber-working head comprises a frame and a delimb knife module mounted to the frame and configured to delimb the felled tree when the felled tree is fed past the delimb knife module. The delimb knife module has a central blade, a pivotable first side blade, and a pivotable second side blade. | 12-12-2013 |
| 20140110021 | Robotic Tree Trimmer And Cutter - A train like vehicle composed of a plurality of interconnected cars (e.g. about 25 cm in length) linked together with springs and cables making it flexible. The shape and tension of the unit will be altered by remote control or an autonomous response system enabling steering and ability to grab on to various shapes of tree trunks and branches. The cars will be equipped with drive wheels that will move the vehicle. The device is configured to include a rotating turret capable of turning in a 360-degree circular motion, and a turret attached to the belly of the front car that is configured to roll 180 degrees back and forth. A hinge after the turret may be provided to give it more angle and flexibility to hold a chainsaw. | 04-24-2014 |
| 20140209210 | AIRBORNE VEGETATION TRIMMING APPARATUS - An airborne vegetation trimming apparatus includes an apparatus housing, an elongated saw boom extending from the apparatus housing, a plurality of rotatable saw blades carried by the saw boom, a saw blade operating system drivingly engaging the saw blades, a rotatable tubing coupling carried by the apparatus housing and a tubing coupling rotation motor drivingly engaging the tubing coupling. | 07-31-2014 |
| 20140299230 | TREE TRIMMING APPARATUS WITH SAFETY BOOM - An airborne tree trimming apparatus for installation on a helicopter or the like is described. The apparatus is designed to prevent arcing from power lines and includes a saw assembly having a housing that is at least partially non-conductive; an internal combustion engine operatively connected to the saw assembly; a boom extension having a lower end connected to the engine, and an upper end attachable to the helicopter, at least a part of the boom extension being non-conductive; and a safety cable extending through the boom extension, at least a part of the cable being non-conductive. | 10-09-2014 |
| 20140338789 | TREE DELIMBER WITH INFEED POST - A delimber for performing a delimbing operation is disclosed herein. The delimber includes a cutter head assembly pivotally mounted on a yoke assembly. The yoke assembly is rotatably mounted on a base assembly. The cutter head assembly includes a base portion with a first side and a second side. A box structure is arranged on the first side, whereas a saw assembly is structured and arranged on the second side. The box structure and the saw assembly define a throat region between the two sides. The throat region defines an infeed side and an exit side. At least one curved knife is pivotally supported within the throat region. Further, an elongated post is positioned adjacent the infeed side of the throat region. The infeed post has a first end attached to the box structure, and a second end attached to the base portion. | 11-20-2014 |
| 20150068644 | Mobile Tree-Trimming Apparatus - An apparatus, such as for tree trimming, includes a mobile carriage having a frame and a pedestal supported by the frame. The apparatus further includes a boom, such as a telescoping boom that is secured to the pedestal through a boom support. The pedestal is pivotable with respect to the carriage frame so that the boom may be selectively operated in a variety of orientations. The mobile carriage of the apparatus is sufficiently compact to fit though tight openings, while also being capable of stably supporting boom extension for operation of a distal end of the boom at elevated heights. | 03-12-2015 |
| 20150375974 | STABILIZER LEGS FOR KNUCKLEBOOM LOADER - A knuckleboom loader including four stabilizer legs to stabilize a knuckleboom loader and counter tipping forces acting on the knuckleboom loader. A rear first stabilizer leg extends away from the knuckleboom loader. A rear second stabilizer leg opposing the rear first stabilizer leg extends away from the knuckleboom loader. A front first stabilizer leg extends away from the knuckleboom loader. The front first stabilizer leg extends further away from the knuckleboom loader than the rear first stabilizer leg. The knuckleboom loader further includes a front second stabilizer leg opposing the front first stabilizer leg. The front second stabilizer leg extends further away from the knuckleboom loader than the rear second stabilizer leg. | 12-31-2015 |
| 20160192595 | Apparatus for Tree Trimming and Tree Maintenance | 07-07-2016 |
