Abstract: A device attachable to a pair of cross-country skis for grooming a trail in fresh snow simply by skiing the first pass. The purpose of this invention is to create a grooved trail in fresh snow to guide all skiers that follow in the same track. Without this attachment installed on the lead skier's ski, the soft snow on each side of the packed ski track does not help to keep the subsequent skier's ski in the lead skier's track. For them, it is like trying to ski on top of a narrow rail. This creates a situation where the skier must be diligent to stay in the track. With this device installed on the lead skiers ski, the subsequent skiers are guided by the packed snow on the sides of the lead skier's ski track. When skiing in tracks made using this invention, a skier can ski faster and smoother than in untracked snow. Since the compacted track helps guide the skier in the track, it allows the skier to focus on, and enjoy, the surroundings scenery.

Abstract: A lawnmower can include a deck, blade, electric motor, battery pack, housing and fan. An air inlet can be located at the front end of the housing and adjacent to the top surface of the deck. The fan can be mounted in the housing and the housing can be configured such that, when the fan operates, air enters the housing air inlet at the front end of the housing, air flowing through the housing air inlet enters the first chamber, air flowing in the first chamber flows through the battery pack, air exiting the first chamber enters the second chamber and flows through the second chamber, air flowing in the second chamber flows through the motor in a direction that extends along the blade axis, and air exiting the motor exits the housing through the at least one air outlet.

Abstract: A rotatable pick-up device, which is installed or installable in an agricultural harvesting machine, for harvested crop, having a roller-shaped drum with an outer lateral surface that has an outside diameter, a multiplicity of tine rings that are arranged on the outer lateral surface of the drum and protrude over the outside diameter of the drum, intermediate spaces for receiving strippers provided between adjacent tine rings, and the tine rings have tine segments that, in the mounted state, are arranged entirely above the lateral surface and are manufactured from an elastic plastic. The tine rings and the tine segments have mutually complementary fastening means, by means of which the tine segments can be mounted on the tine ring without the tine ring being removed.

Abstract: A convertible lawnmower includes a housing and a mulching system. The housing includes a discharge opening. The mulching system includes a mounting ring and a shutter ring. The mounting ring is coupled substantially concentrically to the housing and includes an upper surface, a lower surface, and a sidewall that extends substantially axially therebetween. The sidewall is formed with a retaining groove and at least one installation groove. The retaining groove extends at least partially circumferentially within an inner surface of the sidewall and each installation groove extends axially from the lower surface to the retaining groove. The shutter ring is only coupled to mounting ring via the retaining groove such that the shutter ring is selectively shiftable between a mulching mode and a discharge mode.

Abstract: A threshing or separating concave for grain harvesting is equipped with curved cheeks, between which concave bars having an elongated cross-sectional profile extend, the curved inside edges of which are provided with a rounded inside edge, and having concave rods extending in the direction of the curve, which pass through holes in the concave bars that are immediately adjacent to the rounded inside edge.

Abstract: Gathering chains for row crop harvester heads which improve yield by minimizing the loss of kernels that may prematurely break loose and be lost to the ground. The gathering chains include continuous loops with a plurality of lateral extension segments which provide a substantially continuous conveying surface extending substantially across the width of the slot defining the path of travel of the row crop entering the row unit.

Abstract: A zero turn radius lawnmower, such as a stand-on lawnmower, including a main frame having a first end portion and a second end portion, a pair of drive wheels operably coupled to the second end portion of the main frame and configured to be driven independently in both forward and reverse directions, and a front axle assembly pivotally coupled to the first end portion of the main frame about a single axis. The zero turn radius lawnmower also includes a pair of caster wheels coupled to respective ends of the front axle assembly such that the pair of caster wheels are able to move relative to the main frame, as well as a mower deck coupled to the main frame by at least one first linkage and coupled to the front axle assembly by at least one second linkage.

Abstract: A mower and an attachment device or mount having a frame attachment clamp to removeably affix to the wheel support frame, a pivotable linkage arrangement to position a string trimmer proximate either front wheel of the lawnmower, and a grade wheel to maintain a designated height of string trimmer above grade. The attachment device or mount may enable the operator to attach the frame attachment clamp to either front wheel enabling the operator to look ahead and anticipate where the lawnmower needs to be driven and simultaneously to position the string trimmer for trimming and edging operation around landscapes and borders on either the left or right side of the lawnmower.

Abstract: A high-efficiency cutting system for an autonomous mower provides a multiple blade tip cutting radius for a cleaner cut, and more complete mow. The system includes a spinning blade disk provided within a housing including a vertical standoff. The blade disk includes a first pair of cutting blades located between the center of the blade disk and the circumference of the blade disk, and a second pair of cutting blades located radially inward from the first pair of cutting blades. The cutting blades extend downward and away from the blade disk at an angle.

Abstract: A threshing concave assembly is disclosed having a threshing concave bar wherein the threshing bar is comprised of two threshing surfaces having a dihedral angle relationship relative to each other. In addition, in another aspect the threshing bar can be comprised of two dihedral surfaces whereby one surface face has about 130% greater surface area than its adjacent surface face. Alternatively, one surface face of the threshing bar can be 1.3x wider than its adjacent surface face. In another aspect the threshing bar can be comprised of two dihedral surfaces whereby one surface face has about a 170% greater surface area than its adjacent surface face.

Abstract: A snow plow blade assembly allows substantially rigid blades to shift in response to surfaces and obstacles without placing undue stress on the blade assembly as a whole. The assembly includes a flexible bushing that is received in a bushing hole of a blade, the bushing further having at least one bushing hole to receive at least one stem. The blade is disposed between first and second plates that cooperate with the stem and a fastener to removably secure all of the elements together. A kit contains replacement blades and bushings, a flexible bushing or variable density, a wear block assembly on the blade trailing edge, a protuberance on the bushing that is received in one of the plates and a bushing hole formed as two connected lobes for receiving a like shaped bushing.

Abstract: An example snow blower machine includes a first stage snow mover and a second stage snow mover. Snow is received at an inlet opening of the first stage and expels snow to the discharge opening. In a second stage, an impeller chamber receives snow from the first stage. The impeller chamber extends from a snow receiving end proximate the discharge opening to a distal end rearward of the discharge opening. To receive expelled snow from the first stage and deliver the snow to a second discharge opening, an impeller rotatable around an impeller axis at a hub is disposed in the impeller chamber. The impeller may be rotated by an impeller motor having a motor body that is at least partially disposed within the hub.

Abstract: A mower unit 3 includes a rotational shaft extending upwards through a top wall of a mower deck, a cutter blade attached to a lower portion of the rotational shaft, a mower motor 4 having a rotor 43 disposed upward and a coil 42 disposed downward along an axial direction of an output shaft 41, a mount deck 5 having a horizontal mounting face for mounting the mower motor 4 in such a manner that the output shaft 41 assumes a vertical posture, the mount deck protruding outwards from a side wall of the mower deck, and a cooling arrangement 50 incorporated in the mound deck 5 for discharging heat of the mower motor 4.

Abstract: An articulating mower deck system. The system is adapted to disable power to a blade associated with the wing deck section before the wing deck section begins to lift—from an operating position toward a folded position—yet does not interfere with blade operation when the wing deck section floats relative to a center deck section during normal operation of the deck. Articulating decks of modular construction are also provided, allowing assembly of multiple deck widths with a minimum of modular deck sections.

Abstract: A combine harvester includes a housing, a separating system mounted within the housing for separating a seed material from a straw material, a cleaning system including a cleaning fan configured to produce a motive flow of air, a straw chopper operable to chop the straw material from the separating system into a chopped straw material, a spreading system positioned downstream of the straw chopper and configured to disperse the chopped straw material outside of the housing of the combine harvester, and an air discharge channel located downstream of the straw chopper and above the spreading system and configured to discharge a portion of the motive flow of air produced by the cleaning fan.

Abstract: A control system for controlling a motion of an auger tube of a combine harvester comprises a dynamic pre-filter, a position controller, and a speed controller. The dynamic pre-filter receives a desired position value for the auger tube and generates a filtered desired position signal which changes the desired position value from an old value to a new value over a time period. The position controller receives a first difference between the filtered desired position signal and an actual position of the auger tube. The position controller generates a desired angular speed signal that varies according to the first difference. The speed controller receives a second difference between the desired angular speed signal and an actual speed of the auger tube. The speed controller generates an actuator signal that varies according to the second difference and is received by an actuating system that moves the auger tube.

Abstract: Feederhouse gearboxes are provided for installation on combine harvesters. In embodiments, the feederhouse gearbox includes a gearbox housing, an output shaft rotatable about an output axis, and a primary drive input. The primary drive input is mechanically linked to an engine of the combine harvester when the feederhouse gearbox is installed thereon. A reverser drive input is mechanically linked to a reverser motor of the combine harvester when the feederhouse gearbox is installed on the combine harvester. The feederhouse gearbox further includes a selector mechanism within the gearbox housing and movable between a primary drive position and a reverser drive position, a primary gear train transmitting rotation from the primary drive input to the output shaft when the selector mechanism is in the primary drive position, and a reverser worm drive transmitting rotation from the reverser drive input to the output shaft when the selector mechanism is in the reverser drive position.

Abstract: A universal threshing concave for an agricultural combine for harvesting different types of crops is disclosed. The threshing concave comprises a frame with a pair of opposite side members and opposite end members. The invention further comprises an array of threshing bars angled and notched along their longitudinal extent, and hexagonal in cross-section. Each bar is seated in openings in the end members of said frame.

Abstract: A harvester head reel may include a bat support and an extendable bat supported by the bat support. The extendable bat may have a first segment and a second segment overlapping the first segment. The harvester head reels may further include a first finger extending from the first segment and a second finger extending from the second segment.

Abstract: A system for aquatic plant processing includes a harvester, which includes a nozzle assembly and optionally a pump assembly; and a transport subsystem. Additionally or alternatively, the system can include and/or interface with any or all of: a conduit, a collection assembly, a control subsystem, a sensor subsystem, a pond, and/or any other suitable components. A method for harvesting includes operating the harvesting system in a set of one or more operation modes.