Abstract: The present invention discloses a rectangular ceiling module, accessible one by one, that allows the use of larger-than-standard, reduced-thickness formats, with a front face, a rear face and four edges, with corners forming obtuse angles and robust geometry; it is installed from below without surpassing the height of the standard support grid; it rests on the grid by its four edges or sides and leaves the grid hidden. The module is useful as a standard false ceiling, hiding air-conditioning installations, electrical installations, fire-protection systems, low-current systems, etc., located under the slab, mostly in office buildings, while also serving as an element of insulation and/or sound absorption, depending on the material used.

Abstract: The present invention discloses a rectangular ceiling module, accessible one by one, that allows the use of larger-than-standard, reduced-thickness formats, with a front face, a rear face and four edges, with corners forming obtuse angles and robust geometry; it is installed from below without surpassing the height of the standard support grid; it rests on the grid by its four edges or sides and leaves the grid hidden. The module is useful as a standard false ceiling, hiding air-conditioning installations, electrical installations, fire-protection systems, low-current systems, etc., located under the slab, mostly in office buildings, while also serving as an element of insulation and/or sound absorption, depending on the material used.

Abstract: Highly flexible finished wood laminate, formed by several substrates that include a transparent plastic film finish, a layer of pre-varnished sanded wood, a plastic film with corona treatment on both faces and a flexible substrate. It is easy to affix using glue on straight and shaped surfaces and even adapts to acute corners without cracking; manufacturing process for the laminate.

Abstract: Direct circular rotary internal-combustion engine with toroidal expansion chamber and rotor without moving parts, which directly converts the combustion expansion into a rotary movement of the shaft thereof, receives the compressed oxidizing agent at high pressure, does not require inertia in order to function, and in which combustion can take place in a static combustion chamber.

Abstract: Direct circular rotary internal-combustion engine with toroidal expansion chamber and rotor without moving parts, which directly converts the combustion expansion into a rotary movement of the shaft thereof, receives the compressed oxidizing agent at high pressure, does not require inertia in order to function, and in which combustion can take place in a static combustion chamber.

Abstract: Highly flexible finished wood laminate, formed by several substrates that include a transparent plastic film finish, a layer of pre-varnished sanded wood, a plastic film with corona treatment on both faces and a flexible substrate. It is easy to affix using glue on straight and shaped surfaces and even adapts to acute corners without cracking; manufacturing process for the laminate.

Abstract: The invention relates to a removable ceiling panel, a rectangular material with a face, a back and four sides with edges, installed from beneath and retained horizontally by its four sides, concealing the profiled suspension grid. The panel is supported at the four sides and it is retained by gravity in the vertical direction. The profiled suspension grid is of the standard type known in the market. The design of the sides of the panel permits carrying out its installation on the basis of simple precise movements, which procedure for installation also forms part of the patent applied for. Said installation movements are not natural and, consequently, render the panels aseismic.