In one aspect, electric power equipment includes: a horizontally extending left rotary shaft operably connected with a cutter blade operation lever; a horizontally extending right rotary shaft operably connected with a travel operation lever; and a cutter blade on/off switch and a potentiometer for setting a travel speed arranged at a laterally central position substantially between the left and right rotary shafts, such that the cutter blade on/off switch is operated by the left rotary shaft and the potentiometer is operated by the right rotary shaft.

A land preparation implement includes a rotatable drum assembly that includes a tool assembly. The tool assembly includes a tool holder and a tool. The tool includes a plurality of cleats. The tool holder includes a plurality of cleat supports. The cleats and the cleat supports cooperate to facilitate releasable coupling of the tool to the tool holder.

A dirt extraction apparatus for use by a user in a crawlspace of a building to extract dirt and debris is provided. The dirt extraction apparatus includes a housing having an internal conduit with an inlet and an outlet, a plurality of blades rotatably mounted to the housing proximate the inlet, a motor disposed within the housing and operably connected to the plurality of blades, a support handle coupled to the top face of the housing and having a plurality of bars coupled together, and a collection assembly coupled to the outlet of the housing. Any bar of the support handle is grabbed by the user to maneuver the apparatus within the building crawlspace, thereby enabling the rotating blades to evacuate the dirt and debris from the ground surface through the internal conduit of the housing to the collection assembly.

A steam shank rotor assembly having rigid teeth connected to a hollow shaft via teeth mounts which collectively allow steam to circulate from the hollow shaft to the nozzles located near the working end of the teeth, and then into the soil. This invention provides an agricultural apparatus that simultaneously tills and disinfects soil with the use of steam.

In one aspect, power equipment includes a cutter blade operation lever, a left rotary shaft, an operated member operated by the left rotary shaft to control driving of a cutter blade, and a releasable engagement mechanism provided between the left rotary shaft and the cutter blade operation lever. The releasable engagement mechanism is configured to release a force transmitting engagement between the cutter blade operation lever and the left rotary shaft to allow the cutter blade operation lever to rotate relative to the left rotary shaft when an excessive force is applied to the cutter blade operation lever in a direction to rotate the left rotary shaft beyond a normal rotational angle range.

An apparatus, which may be a tillage apparatus, is disclosed that may have a flexible frame. The frame may be made from open members. The frame may support ground engagers and may be supported on wheel assemblies. The ground engagers may be connected to a spring trip mechanism. The ground engagers may be mounted to open members of the frame with a clamping style mechanism. The clamp mechanism may include wedge devices. The frame may be lowered and raised relative to wheels of the wheel assemblies with a lift mechanism. One row of ground engagers may be raised or lowered relative to the frame independent of another row of ground engagers. An anti-skid or skew control system may be employed in association with the independent height adjustment of one row of ground engagers. A system may be provided to maintain and control the height of a tow hitch forming part of the apparatus.

An apparatus, which may be a tillage apparatus, is disclosed that may have a flexible frame. The frame may be made from open members. The frame may support ground engagers and may be supported on wheel assemblies. The ground engagers may be connected to a spring trip mechanism. The ground engagers may be mounted to open members of the frame with a clamping style mechanism. The clamp mechanism may include wedge devices. The frame may be lowered and raised relative to wheels of the wheel assemblies with a lift mechanism. One row of ground engagers may be raised or lowered relative to the frame independent of another row of ground engagers. An anti-skid or skew control system may be employed in association with the independent height adjustment of one row of ground engagers. A system may be provided to maintain and control the height of a tow hitch forming part of the apparatus.

The active coulter system includes a pivotable support structure that vertically adjusts the position of an active coulter component to compensate for changes in the contour of a target field. In the preferred embodiment, a proximity sensor and an associated controller are in electronic communication with a linear actuator assembly. Based on data from the proximity sensor, the controller sends electronic instructions to the linear actuator assembly to automatically move the active coulter component vertically. The system also optionally includes a torque/speed sensor that can operate independently to control the torque and/or power supplied to the active coulter component, or the sensor can interface with the controller and anticipate changes in power needs and increase/decrease power before the operation of the active coulter component is affected.

An oblique submerged reverse deep rotary tilling device configured to be connected to a tractor. The tilling device includes a stander, a mounted frame, a gearbox and an oblique blade roller. The oblique blade roller has configured rotary blades whose tips bend to the same direction. The angle between the rotary tilling blade roller and an advancing direction of the tractor is 5570 while the rotary blade tips are all toward the right side of the advancing direction. Side force balance blades are installed to the left side of the oblique blade roller, rotate in a plane that is parallel to the advancing direction, and have a rotating center axis disposed at an angle to the oblique blade roller to balance the axial component force of the oblique blade roller.

An oblique submerged reverse deep rotary tilling device configured to be connected to a tractor. The tilling device includes a stander, a mounted frame, a gearbox and an oblique blade roller. The oblique blade roller has configured rotary blades whose tips bend to the same direction. The angle between the rotary tilling blade roller and an advancing direction of the tractor is 5570 while the rotary blade tips are all toward the right side of the advancing direction. Side force balance blades are installed to the left side of the oblique blade roller, rotate in a plane that is parallel to the advancing direction, and have a rotating center axis disposed at an angle to the oblique blade roller to balance the axial component force of the oblique blade roller.