Abstract: Disclosed is a tungsten-doped lithium manganese iron phosphate-based particulate for a cathode of a lithium-ion battery. The particulates include a composition represented by a formula of LixMn0.998-y-zFeyMzW0.002PaO4a±p/C, wherein x, y, z, a, p, and M are as defined herein. Also disclosed is a powdery material including the particulates, and a method for preparing the powdery material.

Abstract: An air supply system may supply air into an elevator building and into the elevator. The system includes a number of frames each having a number of openings communicating with an air passage formed in the elevator building. One or more tubes are disposed in the elevator building for communicating with the air passage. An air generator is coupled to the tube for supplying air into the tube and for supplying air into the air passage and the elevator. A heat resistive panel assembly is secured to the wall and spaced from the elevator for forming an air chamber and for protecting the elevator from being burned by the fire.

Abstract: A window equiped with heat effect automatic opening device is provided. The window comprises a rectangular casing composed of hollow interior frames, an exterior panel and an interior panel secured to the lower portion of the casing and a tempered glass for covering the upper portion slidably secured into the casing between the panel and suspended from a suspension system which includes a heat effect device therein to automatically open the window when the indoor temperature becomes higher than an infusion point, and a lift device disposed between the glass and the interior panel for manually opening or closing the window. The improvement is characterized in that when comes a fire alarm, the heat effect device will break off to set the glass free to open the window.

Abstract: A building crane apparatus includes: a gantry crane slidably held on a pair of guiding rails longitudinally juxtapositionally mounted on two side walls of a building, and an elevating device secured on the building side walls for lifting the gantry crane from on the building walls to subsequently raise the crane corresponding to the building height under construction to provide a crane climbable on the building walls for eliminating an additional supporting base for erecting the crane in order for unobstructedly moving the crane in the working area.