A vent cover assembly is disclosed, such as for a floating or fixed floor. Example vent cover assemblies may include a support plate configured to be secured over a duct, and a flush mount vent cover. The support plate may define a plurality of first airflow apertures configured to permit airflow from the duct through the support plate. The vent cover may define a second plurality of airflow apertures that are positioned in the vent cover such that the second plurality of airflow apertures are aligned with the first airflow apertures when the vent cover is in a first installed position overlying the support plate. The vent cover may obstruct the first airflow apertures when the vent cover is in a second installed position overlying the support plate.

Improved support systems, including seismic isolation platforms, tracks and flooring systems are disclosed for protecting a payload, for example, data center racks containing delicate computer equipment such as a hard disk drive, from damage due to vibrations such as seismic vibrations and the like. The systems are modular in design, and can be assembled and changed quickly, while being strong and robust enough to support heavy loads.

Disclosed is the redirection of air flow in a sub-plenum using a multi-directional plume that is attached to the bottom surface of an air-grate floor panel. The air-grate floor panel 102 has openings which allow redirected air to flow in an upward direction to cool computer equipment, including servers. The multi-directional plume has a series of vanes that are disposed in various different directions to deflect a flow of air conditioning air through a sub-plenum in a vertical direction to flow through openings in the air-grate floor panel. Since the multi-directional plume is capable of redirecting air from various different directions in the sub-plenum, the air-grate floor panels do not have to be repositioned to capture air flow from any particular direction.

The invention relates to a raised ventilation flooring structure (105,106) comprising a first and a second transverse support beam (107,108) extending substantially parallel in a transverse direction T at a predetermined mutual distance W.

The support beams (107, 108) are interconnected via connection profiles (109, 110) to form a grid structure. Carrier profiles with side walls having a number of apertures, are supported with their ends on the support beams (107, 108). A panel with a closed surface is supported on each carrier profile with side edges of adjacent panels being spaced apart to form a ventilation gap (55).

The support beams (107, 108) form elongate collection members that extends along and/or below the side walls of the carrier profiles in the length direction L, below the ventilation gap, to form collection channels (70,100).

An air flow path extends from a space between the side walls of the carrier profiles (50,51), via the apertures (42,44) to the collection channel (70,100) and to the ventilation gap (55) between the adjacent panels (46,48).

A flooring element is used in a raised floor having removable flooring panels and a supporting structure and having a load bearing surface. The flooring element includes a roll of flexible sheet material mounted on the flooring element. The flooring element may include a flooring stringer or an insert. After removal of an overlying flooring panel to reveal an opening to a sub-floor void, the roll of flexible sheet material may be extended from the roll and affixed to an attachment means at an opposite side of the opening so as to substantially cover the opening and provide a warning of a removed panel.

A flooring element is used in a raised floor having removable flooring panels and a supporting structure and having a load bearing surface. The flooring element includes a roll of flexible sheet material mounted on the flooring element. The flooring element may include a flooring stringer or an insert. After removal of an overlying flooring panel to reveal an opening to a sub-floor void, the roll of flexible sheet material may be extended from the roll and affixed to an attachment means at an opposite side of the opening so as to substantially cover the opening and provide a warning of a removed panel.

An aircraft fuselage including a fuselage skin, cross-members supporting a floor of the aircraft, wherein the fuselage includes a multifunctional substructure fixed to at least one of the cross-members in a lowered part of the cross-member. The multifunctional substructure comprises: at least one duct of an air distribution system having a substantially rectangular section at the location of the at least one cross-member and having lateral walls of the duct that are substantially vertical; a seat fixing track or a stiffener fixed on a first lateral wall of the duct of the multifunctional substructure, and; a seat fixing track or a stiffener fixed on a second lateral wall, opposite the first lateral wall, of the duct of the multifunctional substructure.

A system and method of reducing consumption of electricity used to cool electronic computer data center, networking, and telecommunications equipment, and to reduce the incidence of thermal failure of electronic components, includes provision 5 of one or more partitions to reduce the volume of the cooled environment supplying coldest possible cooled air from air conditioning systems to a chamber adjacent to racks containing the electronic components, preventing dilution of the supplied cooling airflow by warmer air from outside of the reduced volume environment, and controlling the delivery of cooling air flow through the reduced volume of the cooled environment.

Improved support systems, including seismic isolation platforms, tracks and flooring systems are disclosed for protecting a payload, for example, data center racks containing delicate computer equipment such as a hard disk drive, from damage due to vibrations such as seismic vibrations and the like. The systems are modular in design, and can be assembled and changed quickly, while being strong and robust enough to support heavy loads.

A grate constructed in accordance with the present invention is used in connection with HVAC applications and systems and may be placed in an opening of an air duct in a floor. The grate has a plurality of grate bars and cross bars that are formed from strips of prefinished metal cut from a sheet of metal that are bent around a form to provide an upside down U shaped cross-section defining a channel. Pairs of grooves are formed across a top of each cross bar and portions of the grate bar. The grate bars are positioned above the cross bars in a perpendicular manner and portions of the grate bars are received in the pairs of grooves. The grate bars and the cross bars are coupled together by moving the portions of the grate bars received in the grooves away from each other, thereby wedging them together.