The invention provides a transmission mechanism for an electric drill and the electric drill including the transmission mechanism. The transmission mechanism includes a primary planet carrier, a gear assembly, a secondary planet carrier, and a secondary gear assembly. The gear assembly comprises a primary gear ring and a primary gear set located in the primary gear ring. The primary gear set has two primary planetary gear sets mounted on the primary planetary gear shaft. The secondary planet carrier is provided with secondary planetary gear shafts and an output shaft. The secondary gear assembly includes a secondary gear ring and a secondary planetary gear set. The secondary planetary gear set is pivotably mounted on the secondary planetary gear shafts, an outer side of the secondary planetary gear set engages with the secondary gear ring, and an inner side of thereof engages with the sun gear.

An electrical handheld shovel system includes a handheld shovel with an auger bit. The shovel includes a motor configured to rotate the auger bit and a portable power source configured to power the motor. The shovel includes an input/output (I/O) device and a controller to control rotation of the auger bit. The shovel has a handle and a shovel portion. In one example, the power source is integrated into the handle, and in another example, the power source is detachably coupled to the handle. The shovel has a gearbox coupled to the motor. The shovel portion includes a blade positioned proximal to the auger bit to retain debris from the auger bit. The auger bit has a flute that is partially covered by the blade, and the blade defines a discharge opening configured to discharge at least some of the debris.

A hole digger is provided. The hole digger includes a first handle assembly and a second handle assembly. The first handle assembly includes a first grip, a first intermediate portion, and a first blade. The first intermediate portion extends between the first grip and the first blade. The second handle assembly including a second grip, a second intermediate portion, and a second blade. The second intermediate portion extends between the second grip and the second blade. The second handle assembly is pivotally coupled to the first handle assembly such that a front surface of the first blade faces a front surface of the second blade. The first blade is not identical to the second blade. At least one stiffener is coupled to at least one of the first or second blades.

A hole boring device includes a housing including a proximal end, an open distal end, and a bore extending longitudinally from the distal end to the proximal end. An inlet connectable to a pressurized water source is disposed on the proximal end of the housing. A spraying device in fluid communication with the inlet is disposed in the bore and is oriented towards the open distal end of the housing. The spraying device is configured discharge a stream of water passing therethrough so as to form a boring stream configured to bore a hole in a ground surface. In some embodiments, the spraying device is configured to rotatably discharge the pressurized stream of water. A depth collar disposed annularly about the housing defines the depth of the bored hole. A slot disposed along the housing allows debris from the boring process to exit the housing, leaving an empty bored hole.

A fence construction device includes a platform including an upper surface and a lower surface. Wheels are coupled to the lower surface of the platform. An auger drill is coupled to an upper surface of the platform. The auger drill is moveable up and down along a first vertical axis. A post drive is coupled to an upper surface of the platform and moveable up and down along a second vertical axis. A spool is rotatably coupled to the upper surface of the platform and is rotatable about a third vertical axis. The post drive is disposed in between the auger drill and the spool. The auger drill and the post drive are aligned along a horizontal axis.

A fence construction device includes a platform including an upper surface and a lower surface. Wheels are coupled to the lower surface of the platform. An auger drill is coupled to an upper surface of the platform. The auger drill is moveable up and down along a first vertical axis. A post drive is coupled to an upper surface of the platform and moveable up and down along a second vertical axis. A spool is rotatably coupled to the upper surface of the platform and is rotatable about a third vertical axis. The post drive is disposed in between the auger drill and the spool. The auger drill and the post drive are aligned along a horizontal axis.

Apparatus, systems and methods for irrigating lands are disclosed. In one example, an irrigation system is disclosed. The irrigation system includes a gate and a microcontroller unit (MCU). The gate is configured for adjusting a water flow for irrigating a piece of land. The MCU is configured for controlling the gate to adjust the water flow based on environmental information related to the piece of land.

An electrical handheld shovel system includes a handheld shovel with an auger bit. The shovel includes a motor configured to rotate the auger bit and a portable power source configured to power the motor. The shovel includes an input/output (I/O) device and a controller to control rotation of the auger bit. The shovel has a handle and a shovel portion. In one example, the power source is integrated into the handle, and in another example, the power source is detachably coupled to the handle. The shovel has a gearbox coupled to the motor. The shovel portion includes a blade positioned proximal to the auger bit to retain debris from the auger bit. The auger bit has a flute that is partially covered by the blade, and the blade defines a discharge opening configured to discharge at least some of the debris.

A yard tool blade is provided with a distal edge to dig a work material, with a surface to support the work material and an adaptor at a proximal end for receipt of a handle. The distal edge is sharpened to an angle within a tolerance of forty to fifty degrees for a reduced thickness to cut the work material. A method for manufacturing the yard tool blade forms a yard tool blade blank. A cutting edge is machined on a distal edge of the yard tool blade blank. The yard tool blade blank is formed into a shaped yard tool blade. The shaped yard tool blade is heat treated after the cutting edge is machined on the distal edge.

A cutting head includes a main body that is attachable to an ice drill shaft at a top side. The main body includes a bottom side that has a bottom peripheral surface. The cutting head includes at least one cutting edge that is disposed on the main body. The cutting edge is configured to perform a cutting operation at the bottom side of the main body. The cutting head includes a cutting rate control pad that is disposed on the bottom side of the main body. The cutting rate control pad extends away from the bottom peripheral surface.