A multipurpose floor demolition tool enables removing, scraping, manipulating, and replacing a floor and floor covering and components without having to bend down, and with a lesser application of force. The tool provides a plate that is sufficiently flat, and has a straight scraping edge for scraping, flipping over, and prying floor components. The plate forms a central aperture for prying a nail from the floor. The plate has a first curvilinear edge defined by a claw for tearing and prying floor components. The plate has a second edge defined by a tab for prying floor components. A portion of the first and second edges are perpendicular to the straight scraping edge, such that the first and second edges simultaneously engage a floor. A handle joins with the straight mounting edge to enable manipulation of the plate and provide leverage for prying and scraping floor components with the plate.

A vertical joint system for substrates is formed with joints and which engaged by relative motion in a direction perpendicular to major surfaces and of the substrate. The joints are configured to enable relative rotation of up to 3 degrees while maintaining engagement of the joints. The joints and are further configured to form two locking planes one on each of the inner and outer most sides of the joint. Engagement about the locking planes is provided by transverse outward extending surfaces. At least one surface in each pair of engaging surfaces is smoothly curved. The joints and can be further arranged to provide a third locking plane parallel to and between the locking planes. The joints are disengaged by combination of a downward rotation of one joint relative the other then application of a downward force.

Dust free tile removal apparatus comprising a hollow base member, a hollow rake member, a plurality of rake tines, struts, and a handle. The hollow base member includes an opening that is configured to couple to a vacuum source at one end and is in fluid communication with the hollow rake member at another end. The connection of the hollow rake member with the hollow base member forms an obtuse angle. The hollow rake member has a top surface and a first end each having at least two openings. Rake tines extend outward from the first end of the hollow rake member. Struts extend from a bottom surface of the apparatus. The handle spans between the struts.

Improved function of floor stripping machines is achieved by orienting the leading edge of a blade attached to the machine at an angle that is other than perpendicular to the direction of travel of the machine. Additional benefits result from making the angle of the blade's leading edge adjustable.

Disclosed is an equalization vent usable for venting and drying a roof. In accordance with example embodiments, the equalization vent may include a base, a cup arranged in the base, a flexible membrane arranged in the cup, an airflow guide arranged on the base and the cup, and a cover on the air flow guide, wherein the flexible membrane allows air to flow through the vent when the pressure outside of the vent is less than the pressure inside the base and prevents air from flowing through the vent when the pressure outside of the vent is greater than pressure inside the base.

Disclosed is an equalization vent usable for venting and drying a roof. In accordance with example embodiments, the equalization vent may include a base, a cup arranged in the base, a flexible membrane arranged in the cup, an airflow guide arranged on the base and the cup, and a cover on the air flow guide, wherein the flexible membrane allows air to flow through the vent when the pressure outside of the vent is less than the pressure inside the base and prevents air from flowing through the vent when the pressure outside of the vent is greater than pressure inside the base.

Methods and apparatus for a chipping hammer adapter handle generally comprising an elongated shaft and a hammer receiver. The elongated shaft is coupled to the hammer receiver. The hammer receiver comprises a hammer handle housing configured to receive a chipping hammer handle, and at least one secure arm to secure a chipping hammer. The adapter handle further comprises a knee guard and at least one vacuum hose guide. The adapter handle allows a user to remain in a standing position while using a chipping hammer for tile removal. The more ergonomic position may prevent fatigue and health issues for the user.

A cleaning method includes controlling an unmanned aerial vehicle (UAV) to fly to a region of a wall body according to a path to be cleaned, and, in response to detecting a cleaning prohibition identifier associated with the region, recognizing the region as a cleaning prohibition region and controlling the UAV to fly over the cleaning prohibition region without cleaning the cleaning prohibition region.

An apparatus for protection of an elongated structural support from impact, the apparatus includes an elongated impact protection component in the form of a unitary part having an inner surface, an outer surface, and a plurality of orthogonally-oriented projections spaced along a length of the elongated impact protection component. The projections of the elongated impact protection component include integrally formed connectors for interlocking connection to other same type impact protection components.

An apparatus for protection of an elongated structural support from impact, the apparatus includes an elongated impact protection component in the form of a unitary part having an inner surface, an outer surface, and a plurality of orthogonally-oriented projections spaced along a length of the elongated impact protection component. The projections of the elongated impact protection component include integrally formed connectors for interlocking connection to other same type impact protection components.