A Configurable Water Powered Digging Tool may enable a user to dig a hole in a fraction of the time and a fraction of the effort of traditional digging tools such as shovels and post hole diggers. A Configurable Water Powered Digging Tool may enable a user to purchase a Configurable Water Powered Digging Tool for a fraction of the cost of other water powered digging tools due to simple and rapid, partial disassembly, vastly reduced shipping costs, making the configurable water powered digging tool accessible to many more people. A Configurable Water Powered Digging Tool may enable a user to dig a hole more safely than with other water powered digging tools because of the integrated water valve that enables the user to keep both hands on the handle during operation and the coupler which significantly reduces the likelihood of breaking at the weld where the vertical rod meets the handle. A Configurable Water Powered Digging Tool is comprised of the minimum number of parts to achieve its purpose, thus reducing complexity, manufacturing costs, consumer costs, complexity, repairs and replacements, and increasing safety while reducing effort and time required to achieve an objective.

A Configurable Water Powered Digging Tool may enable a user to dig a hole in a fraction of the time and a fraction of the effort of traditional digging tools such as shovels and post hole diggers. A Configurable Water Powered Digging Tool may enable a user to purchase a Configurable Water Powered Digging Tool for a fraction of the cost of other water powered digging tools due to simple and rapid, partial disassembly, vastly reduced shipping costs, making the configurable water powered digging tool accessible to many more people. A Configurable Water Powered Digging Tool may enable a user to dig a hole more safely than with other water powered digging tools because of the integrated water valve that enables the user to keep both hands on the handle during operation and the coupler which significantly reduces the likelihood of breaking at the weld where the vertical rod meets the handle. A Configurable Water Powered Digging Tool is comprised of the minimum number of parts to achieve its purpose, thus reducing complexity, manufacturing costs, consumer costs, complexity, repairs and replacements, and increasing safety while reducing effort and time required to achieve an objective.

A hand held trencher assembly for digging a trench with existing weed trimmers includes a weed trimmer that is manipulated by a user. The weed trimmer has a motor, a pole and a drive that is positioned within the pole. The drive is rotatably coupled to the motor such that the motor rotates the drive when the motor is turned on. A trenching unit is removably coupled to the pole such that the trenching unit lies on the ground when the weed trimmer is employed. The trenching unit is releasably coupled to the drive for powering the trenching unit thereby facilitating the trenching unit to dig a trench in the ground.

A hand held trencher assembly for digging a trench with existing weed trimmers includes a weed trimmer that is manipulated by a user. The weed trimmer has a motor, a pole and a drive that is positioned within the pole. The drive is rotatably coupled to the motor such that the motor rotates the drive when the motor is turned on. A trenching unit is removably coupled to the pole such that the trenching unit lies on the ground when the weed trimmer is employed. The trenching unit is releasably coupled to the drive for powering the trenching unit thereby facilitating the trenching unit to dig a trench in the ground.

A tool changer for a construction machine includes at least one tool retaining portion for holding a tool being mountable to the tool mount, the tool changer being configured to be movably attached to the construction machine. The tool changer also includes and a moving mechanism for moving the tool retaining portion in alignment with the articulated boom of the construction machine to allow for picking of the tool by the tool mount. The construction machine includes an articulated boom with a tool mount.

A blade comprising at least one pushing element, at least one cutting element, and at least one wing section. The at least one pushing element may have a top edge, a bottom edge, and a concave face. The at least one cutting element may be coupled to the at least one pushing element at the bottom edge of the at least one pushing element. The at least one wing may include a wing face and a wing cutting element. The at least one wing may be coupled to a vertical side of the at least one pushing element. The at least one wing section may extend at an obtuse angle relative to the at least one pushing element.

A blade comprising at least one pushing element, at least one cutting element, and at least one wing section. The at least one pushing element may have a top edge, a bottom edge, and a concave face. The at least one cutting element may be coupled to the at least one pushing element at the bottom edge of the at least one pushing element. The at least one wing may include a wing face and a wing cutting element. The at least one wing may be coupled to a vertical side of the at least one pushing element. The at least one wing section may extend at an obtuse angle relative to the at least one pushing element.

A hand held supersonic air knife with a supersonic variable flow nozzle yields a continuously variable power mass flow rate (CFM) and pressure over a selectable power range, responsive to rotations of the nozzle exterior sleeve or outer nozzle member. The maximum power position identified as one end position and a second end position as the lowest power. The exterior sleeve can be rotated to any axial or circumferential position between start (low) and end (high). The result will be an intermediate power position. Any intermediate position will also be a supersonic nozzle of varying parameters between the start and end positions. Thus, a variable flow supersonic nozzle is provided by the manual sleeve rotation by an operator or a remotely controlled positioning of the sleeve.

A hand held supersonic air knife with a supersonic variable flow nozzle yields a continuously variable power mass flow rate (CFM) and pressure over a selectable power range, responsive to rotations of the nozzle exterior sleeve or outer nozzle member. The maximum power position identified as one end position and a second end position as the lowest power. The exterior sleeve can be rotated to any axial or circumferential position between start (low) and end (high). The result will be an intermediate power position. Any intermediate position will also be a supersonic nozzle of varying parameters between the start and end positions. Thus, a variable flow supersonic nozzle is provided by the manual sleeve rotation by an operator or a remotely controlled positioning of the sleeve.

A vacuum-assisted hole digger includes a central vacuum tube extending at an upper end from a handle assembly to a digger head assembly attached at a lower end, the digger head including a scraper blade assembly within a housing formed of an orifice plate and saw blade. The orifice plate attaches to the central vacuum tube, an extraction aperture formed in the orifice plate opening into the tube. Air entry apertures formed in the orifice plate outside of the vacuum tube have a total area smaller than the area of the evacuation aperture, which obtains enhanced airflow rates through the digger housing upon connection of the upper vacuum tube opening with a vacuum source. The blade edges of the scraper blade assembly abrasively engage the soil face when digging in a manner that obtains reduction in soil particle size and enhances soil particle airflow entrainment.