Abstract: An extension fastener for a portable light and compact tool is described. The housing of the tool, or the useful part of it encompasses a self-taping screw. The termination of the self-taping screw is secured to a base plate and extends perpendicular thereto to provide a firm support. The tool is fasten to a support taken from surrounding vegetation, such as a branch from a tree and of any diameter, or a machined wood extension member in order to increase the tool reach.

Abstract: An extension fastener for portable tool is described. The housing of the tool or the useful part of it encompasses a self-taping screw. The termination of the fastening screw is a perpendicular base plate for a firm support. The tool is fasten to the surrounding vegetation of any diameter or machined extensions in order to increase the tool reach of the light compact tool.

Abstract: A roofing system for a substantially flat roof structure is provided, including a central panel with a substantially concave surface provided with a through hole at the centre for engaging a drainage system of the flat roof, and a first row of panels assembled around the central panel. The row of panels includes tapered side panels interlocked to the sides of said the central panel and tapered corner panels interlocked with adjacent side panels. Optionally at least one further row of side and corner panels may be assembled around the first row of panels. The side and corner panels are shaped so as to retain a constant slope to direct water away from their outside edges towards the through hole of the central panel. The panels are interlocked using a system with shiplap joints.

Abstract: A basin for simultaneous or consecutive dewaxing and curing of denture molds is disclosed. The basin is generally box-shaped and is provided with three vertically-shaped trays of which the topmost remains above the high fluid level. The upper rear portion of the basin has a pivotally-secured frame-arm provided with a plurality of nozzles adapted to spray over the entire area of the topmost tray. The fluid from the nozzles drains back into the basin; a recirculating pump recirculates the fluid back into the nozzles. A separate fluid inlet is provided to fill the basin for curing. The basin is further provided with an upper and lower fluid level-limiting means, a heating element, a thermostat and, preferably, an automatic timer.