Abstract: A nozzle for inflatable objects being made of a plastic material, including a nozzle body and a sealing element composed of a vertical sleeve body and an one-way membrane, in which the nozzle body is incorporated with an annular nozzle seat, a conical wall is extended upward from the annular nozzle seat, an annular horizontal wall is extended from the top of the conical wall, a vertical cylindrical body is extended from the annular horizontal wall, an air passage is formed in the vertical cylindrical body, a plug which can be inserted to the air passage to seal the air passage, the sealing element is tightly fitted to the lower cylindrical body, and an one-way membrane is secured to the inner wall of the sealing element to swing freely therein and to close the air passage tightly.

Abstract: A fire-escaping room capable of providing basic living necessities for persons in case of a fire, the room being constructed by concrete to form a close space, including a fire-proof door serving as an only entrance/exit of the room and capable of preventing outdoor heavy smoke from entering the room, several vent holes being formed on the fire-proof door, a slide block set being operable in the room to close or open the vent holes; a manually operated air pump disposed in the room, having a reciprocally movable diaphragm for changing the volume of the air pump so as to intermittently suck external air through an externally extending ventilating pipe into the fire-escaping room; and a sprinkling pipe disposed around vertical room walls of the room, the sprinkling pipe being formed with a plurality of sprinkling holes and connected with a water supply incoming pipe to be supplied with water therefrom, whereby when a manually operated controlling valve disposed in the room is located at a water flow conducting

Abstract: Disclosed herein is a sealed hexahedral package made of a piece of paper material by folding and bonding, including a flap consisting of an outer layer extending from its top panel and an inner layer extending from its side panel, lapped and adhered to the side panel so that the outer layer is covering the inner layer, where a pour spout is opened; and a protuberance made of soft material adhered to the side panel to block and seal the pour spout so that after the flap is pulled upwards, the pour spout is exposed, and the protuberance remains adhered to the side panel.