A branch cutting saw is provided which can easily and reliably cut thin and thick branches, branches in places difficult to reach with shears, branches in dense areas, and the like. The branch cutting saw is for cutting a branch by hooking a hook section 22 onto the branch and advancing and retreating a saw blade section 11 while urging the branch toward the saw blade section 11. The hook section 22 is pivotally supported at a leading end of a sheath body 20 and is under spring bias to have a hook section steady-state position Fs in a longitudinal region Rf of the sheath body 20, and is configured to be rotationally displaced from the hook section steady-state position Fs when a load equivalent to or greater than the spring bias is applied against the spring bias. The saw blade section 11 of a saw body 10 is under spring bias to have a saw blade section steady-state position Ns at a position where a tip end of the saw blade section is retreated from the hook section 22, and is configured such that the saw blade section 11 is advanced from the saw blade section steady-state position Ns when the grip section of the saw body is manipulated against the spring bias.

A chainsaw, a lubrication system for a chainsaw, and a lubricant for a chainsaw are provided. The chainsaw includes a lubrication system and guide bar extending from a housing. The lubrication system includes a reservoir at which a lubricant is contained. The reservoir is releasably attachable to a machine drive device. The machine drive device includes a body at which a pump apparatus is positioned. The machine drive device forms an inlet opening in fluid communication with the reservoir. The machine drive device forms an outlet opening at which a conduit is fluidly coupled to receive the lubricant. The conduit forms a conduit outlet through which the lubricant is provided to the guide bar.

According to examples, a power tool may include a chassis and a guide bar mounted to the chassis, the guide bar having a central axis. The power tool may also include a handle attached to the chassis above the central axis of the guide bar and a motor housed within the chassis to drive a chain around the guide bar, in which the motor is positioned beneath the central axis of the guide bar and a central axis of the motor is at a certain angle with respect to the central axis. The handle, the motor, and the battery pack mount may be positioned with respect to the chassis to cause the power tool to substantially be balanced in both lateral and longitudinal directions about a location near the trigger mechanism when the battery pack is mounted to the battery pack mount.

A me.sub.thod for determining output data from crop plant characteristics for a crop plan comprising, in a data processing system providing measurement data detected for a crop plant; determining model data representing a three dimensional model of the crop plant from the measurement data; segmenting the three dimensional model determining first crop plant characteristics for a first subpart of the crop plant provided in a first three dimensional segment segments; and providing output data at an output device. The output data comprise at least one of the following: media data and operation control data indicative of operation control signals for controlling operating of an agricultural machine working on the crop plant, the operation control signals comprising first operation control signals determined from the first crop plant characteristics and configured to control operation of the agricultural machine for applying an agricultural treatment to the first subpart of the crop plant.

A laser system for agricultural applications, the purpose of which is to broaden, supplement or replace the functions performed by conventional implements, aimed at performing pruning, harrowing, cutting, drying and photostimulation, by means of one or more lasers, with a power-supply module, control module, compressed gas and/or ventilation module, temperature control module, distribution module, laser module, laser light containment and guidance module and wheels, having the advantages of reduced dimensions and weight, being able to move at relatively high speeds with low fuel consumption and low operating costs, being able to operate or not operate in environments with positive pressure to avoid damage to the optical parts or along the path of the laser, the modularity of the system and its adaptability to any size of field.

An aerial saw is provided, including an elongated arm having a proximal end and a distal end; a saw blade rotatably connected to the elongated arm; an engine enclosure having a distal end and a proximal end, the engine enclosure coupled to the elongated arm; and a saw attachment member connected to the saw assembly between saw blade and the proximal end of the engine enclosure; the saw attachment member connected to a support structure at a first connection point.

A field-configurable apparatus for different aerial applications is provided. The field-configurable apparatus attaches to an aerial boom on a mobile carrier. The apparatus can perform rapid semi-precise cutting of vegetation. Additionally, the apparatus can perform more precise trimming of one or more areas (e.g., limbs) and optionally use a limb clamp to prevent cut limbs/vegetation from arbitrarily falling on objects below the cutting area. Still further, the apparatus can have a grapple or similar device attached to the end of the boom for use in relocating debris or for loading debris. Other industrial applications are also possible (e.g., commercial water blasting, deicing of planes, etc.). In each configuration, the apparatus comprises one or more rotatable or pivoting couplings to allow for rotation about one or more axis and therefore allow precise manipulation of an aerial tool assembly from an operator in the vehicle or on the ground.

A blade has a flat body with a first side, a second side, an aperture extending between the first side and the second side, and an outer peripheral edge. The aperture has a central axis defining an axis of rotation. A plurality of teeth is formed along a portion of the outer peripheral edge forming a cutting edge. Each of the teeth has a tip that is a radial outermost part of the flat body in a plane defined by the tip and the central axis of the aperture. The cutting edge has a first end and a second end. The distance between each tip of the teeth increases from the first end of the cutting edge to the second end thereof. The distance between each tip and the central axis increases from the first end of the cutting edge to the second end thereof.

A cutting tool including a housing, the cutting tool having a longitudinal extension from the housing to a cutting element provided at the distal end of the cutting tool. The housing is provided with a rigid impact protecting member having at least a rigid portion, the rigid portion being transverse to the longitudinal extension of the cutting tool and provided at a distance from the housing such that the housing is protected from an impact.

A pruning system includes a cutting head comprising upper and lower cutting rings positioned along a bottom portion of one or more tubes. At least one cutting ring is adapted to rotate in a circular motion, while the other cutting ring may be adapted to remain stationary. A vacuum may be applied to suction target plant material, and the cutting head may be lowered toward the target plant material. As adjacent blades from the upper and lower cutting rings are separated in an open position, plant material may be collected in the opening defined by the adjacent blades. As the blades converge, the opening may close, and plant material collected in the opening may be severed from the plant. System variables, may be adjusted to accommodate different types of plant material. The pruning system may be used with a vision system to remove materials from plant beds in a field.