A sealant discharging nozzle includes a nozzle body, a through hole, a discharge port, and a cutout. The through hole is provided in the nozzle body and extends along a central axis of the nozzle body. The discharge port is an opening of the through hole provided in an end surface of the nozzle body. Compared with a width of the discharge port in a first direction orthogonal to the central axis, a width of the discharge port in a second direction orthogonal to the central axis and the first direction is small. The cutout is formed on a first side in a first direction with respect to the discharge port.

A tool having two adjacent blades, for working fluent materials such as cement, plaster, and epoxies in corners and other angled areas, is shown and described. Each blade is angularly adjustable with respect to an included angle defined between the two blades. The tool may have right and left blade portions pivotal along abutting or adjacent edges, and a linkage including a releasable clamp to establish and secure desired working angles between the right and left blade portions. The tool has two pivot axles, one for supporting each of the right and left blade portions.

A joint-forming system includes a first smoothing plate, a second smoothing plate coupled with the first smoothing plate so as to form an interior angle and an exterior angle therewith, a first bracket extending between the first smoothing plate and the second smoothing plate so as to span a portion of the interior angle, a second bracket extending between the first smoothing plate and the second smoothing plate so as to span a portion of the interior angle. A handle extends between the first bracket and the second bracket. One or more blades are configured to extend along the exterior angle at a crest thereof.

The present invention is directed to construction tools. The present invention includes tools used for applying mastic or mud to a work surface, for example, a corner finishing tool that may have a quick engage/disengage ball and socket feature that automatically stays open and automatically closes and locks. Various embodiments may include a universal and interchangeable working/running blade and cooperating frame design. The frame design may be partially held in place with a face or top plate. Various embodiments may include a multiple tension spring design with one or more adjustment arm(s) for varying the tension on the frame(s) and blade(s). Various embodiments may include flat internal walls to accommodate the one or more adjustment arm(s). Various embodiments may also include a input port cone with ball for attachment to, for example, an applicator box, that may be formed from multiple parts that may be made from different materials.

A prefill tool for finishing wallboard joints is provided for finishing a wallboard joint, and includes a box assembly defining a hopper, having a top wall and a front wall constructed and arranged for engaging the wallboard joint. The front wall partially defines a gate dimensioned for dispensing joint compound stored in the hopper. Also, the gate is located on a skid plate mounted on the front wall, the skid plate having a main portion, and a gate portion partially defining the gate being displaced from a plane defined by the main portion.

Method and apparatus are disclosed for drywall banjo apparatus for applying joint tape. An example tool for applying joint tape to a corner drywall joint includes a base and a wheel configured to rotatably couple to the base and roll along the corner drywall joint. The wheel includes a body that defines an outer surface. The outer surface includes a first angled surface configured to press the joint tape against a first drywall defining the corner drywall joint, a second angled surface opposite the first angled surface and configured to press the joint tape against a second drywall defining the corner drywall joint, and a rounded vertex defined between the first angled surface and the second angled surface. The rounded vertex is rounded to deter the wheel from perforating the joint tape.

A hand tool is provided for the application of joint compound on wall board, having a planar blade affixed to an ergonomic handle. The blade has a concave arcuate working edge, wherein the concave arcuate curve extends the entire length of the working edge to each corner of the working edge. The concave arcuate working edge may be used to apply a self-feathered layer joint compound over drywall tape on planar butt joint or an inside corner joint. The blade is laterally flexible.

Disclosed is an adjustable drywall corner tool. The adjustable drywall corner tool includes a compound receiver and an adjustable compound supply. The compound receiver is disposed on a back side of a first plate and a second plate. The first plate and second plate is adjustably coupled to one another and adjustable to accommodate an angle of an outside corner of a wall. The compound receiver is shaped to receive a drywall compound. The adjustable compound supply is coupled in fluid communication with the compound receiver to receive the drywall compound from the compound receiver and flexibly deliver the drywall compound to a front side of the first plate and the second plate.

An applicator of jointing tape for joining two sheets of plasterboard includes a mud chamber through which the tape is paid out. The chamber has a tape inlet slot formed between a free end of a rear wall of the chamber and a first free end of a lower wall of the chamber. The free end of the rear wall of the chamber and the first free end of the lower wall of the chamber comprise a cylinder with a cross section greater than a thickness of the wall to which each cylinder is attached, each cylinder being covered by a removable protective sleeve with an interior cross section that complements the cylinder that the sleeve covers, each protective sleeve having a longitudinal opening delimited by two immobilization edges for immobilization against the wall bearing the cylinder that the sleeve covers.

Method and apparatus are disclosed for drywall banjo apparatus for applying joint tape. An example tool for applying joint tape to a corner drywall joint includes a base and a wheel configured to rotatably couple to the base and roll along the corner drywall joint. The wheel includes a body that defines an outer surface. The outer surface includes a first angled surface configured to press the joint tape against a first drywall defining the corner drywall joint, a second angled surface opposite the first angled surface and configured to press the joint tape against a second drywall defining the corner drywall joint, and a rounded vertex defined between the first angled surface and the second angled surface. The rounded vertex is rounded to deter the wheel from perforating the joint tape.