A new athletic floor resiliently retrofit to a worn athletic floor. The worn floor includes a plurality of elongated raised channels spaced from one another and connected to a ground substrate. The new athletic floor includes at least two elongated subfloor panels. At least two elongated raised channels are spaced from one another and have a first set of adjoined elongated subfloor panels located therebetween. At least one elongated raised channel is spaced therefrom and has a second set of adjoined elongated subfloor panels located therebetween. A resilient pad is positioned between each elongated subfloor panel and the ground substrate. A new flooring is located on the first and second sets of elongated subfloor panels, covering at least one elongated raised channel, and a bottom surface of the new flooring is spaced from a top surface of the elongated raised channel by a gap.

A carpet cutting apparatus comprises a bottom plate and a blade-mounting structure. The bottom plate has a rear flat portion, and a front pointed and slanted tip; and the blade-mounting structure comprises a rear base plate and a forward hood portion, the forward hood portion is configured to engage a blade within a blade holder by means of plurality of screws. The forward hood portion is configured to have a hole to engage a cable hook. A system of carpet cutting and removing comprises a winch connected to a first end of a cable, a carpet cutting apparatus, and a diverter. It provides easy cutting of carpet into carpet strips which can be pulled by means of clamps and winch action. During operation, the base plate capable of receiving a foot of an operator at foot area of the carpet cutting apparatus, to avoid lifting from rear portion.

A carpet pulling apparatus and system are disclosed. The apparatus comprises a base plate with a first surface and a second surface. The apparatus comprises a trolley detachably coupled with the base plate, and the trolley comprises a platform having one pair of vertical flanges, one pair of frames detachably coupled with the platform, and one pair of links coupled with the pair of vertical flanges at a first end, and with the pair of frames at a second end. The apparatus further comprises a spring-controlled lever detachably mounted to a main handle and the spring-controlled lever is configured to detach the base plate from the platform. Further, the apparatus includes a remote-controlled winch disposed over the platform, and a cable extending from a first end to a second end, the first end being received by the remote-controlled winch.

Methods and apparatus for remediating buildings damaged by floodwaters. The methods include removing floodwater-damaged wall cladding to expose underlying structure. Applying under pressure a chemical composition to remove malodor and that penetrates into the underlying structure. Then, allowing a powdery surface coating to form on surfaces of the underlying structure. Useful apparatus includes a container configured to contain a liquid phase of a chemical composition and a pressurized gas canister associated with the container for supplying gas under pressure to a fluid conduit extending from an inlet of the container to an outlet of the container. The apparatus can include a venturi in a flowpath of the fluid conduit which suctions a chemical composition in the container into the fluid conduit for expulsion from the outlet of the container and into a high pressure spray delivery hose.

Methods and apparatus for remediating buildings damaged by floodwaters. The methods include removing floodwater-damaged wall cladding to expose underlying structure. Applying under pressure a chemical composition to remove malodor and that penetrates into the underlying structure. Then, allowing a powdery surface coating to form on surfaces of the underlying structure. Useful apparatus includes a container configured to contain a liquid phase of a chemical composition and a pressurized gas canister associated with the container for supplying gas under pressure to a fluid conduit extending from an inlet of the container to an outlet of the container. The apparatus can include a venturi in a flowpath of the fluid conduit which suctions a chemical composition in the container into the fluid conduit for expulsion from the outlet of the container and into a high pressure spray delivery hose.

Dual-use flooring installation device with interchangeable tool-ends includes a pull bar defining a bend at a proximal end and a first connector at a distal end, the bend configured for engaging an end of a flooring material; and a wedge bar defining a wedge at a proximal end and a second connector at a distal end, the wedge configured for insertion between a wall surface or a cabinet surface and a flat material attached thereto. The device further includes a slide hammer unit comprising a hammer weight slidable about a shaft, the slide hammer unit defining an adaptor at a proximal end that is configured for removably attaching to one of the first connector of the pull bar and the second connector of the wedge bar. In a storage mode, the adaptor is disengaged from the pull bar and the wedge bar.

An automated building washing device generally includes one or more rotational brushes having a vertical rotational axis coupled to a window washing swing stage. The brushes are horizontally movable from end-to-end along the longitudinal direction of a window washing swing stage while rotating about their vertical axis so that a relatively large portion of building surface can be quickly cleaned.

A robot system for maintenance of a building façade with an irregular façade surface is provided. The robot system includes a platform cooperating with a least four pairs of cables for positioning the platform at a distance from a building façade. At least one robot arm is situated on the platform, and includes an adaptor positioned at a distal end thereof for holding and manipulating a building façade maintenance tool. An actuator drives the cables to move the platform to any arbitrary position along the building façade. A controller cooperates with the actuator to instruct the actuator to drive the cables and to control movement of the robot arm, such that driving the actuator and movement of the robot arm is coordinated by the controller; any position deviations in the platform are compensated for by positioning or movement of the robot arm.

According to an example aspect of the present invention, there is provided a cleaning system comprising a first guiding configured to be coupled to an object, a second guiding configured to be coupled to the object such that the second guiding is arranged at a distance from the first guiding, a first part movably coupled to the first guiding, a second part movably coupled to the second guiding, wherein the first part is movable relative to the second part, and wherein the system further comprises a drive system configured to simultaneously move the first part and the second part along the first guiding and the second guiding.

A walk-behind floor scraper machine for removing floor covering from a floor surface is disclosed. In one aspect, the machine includes a base frame, an electric motor secured to the base frame, and a scraper assembly movably secured to the base frame and driven by the electric motor. The machine also includes a rear wheel arrangement including a pair of wheels having a rotational axis. In one aspect, the machine includes a hydraulic circuit with a hydraulic pump driven by the electric motor and a hydraulic motor powered by the hydraulic pump. The hydraulic motor has a drive axle coupled to the wheels, wherein the drive axle is coaxially aligned with the rotational axis. In one aspect, the machine can include a hydraulic tank-frame integral to the chassis of the machine that simultaneously stores hydraulic fluid and structurally supports the hydraulic motor.