A yoke for a ceiling suspension system is disclosed. For example, the yoke may include a yoke body having an upper end configured to be mounted only to another yoke, or to an extension mounted to the other yoke. The yoke body may have a lower end having a first mount configured to be mounted to a first ceiling support member (CSM), and a second mount configured to be mounted to a second CSM that differs from the first CSM. In one version, no portion of the yoke body extends through any portion of the first CSM and the second CSM.

A double rail (1) for creating a stretched-fabric structure, having a tubular body comprises a longitudinal passage opening (3) for the passage of stretched fabrics, wherein the tubular body comprises two internal flanges (4, 5) converging toward one another and delimiting, with an internal wall (6), a cavity (7) in which lighting means (8) are housed, the cavity (7) being open toward the passage opening (3).

Technologies are described for a system for mounting a louver, a lens, or a rectangular or square light LED light source to a ceiling support grid. A mounting frame has at least one fixed flat extension extending from the first side and at least one retractable extension on a second side. The mounting frame is configured to be inserted into a grid opening and mounted to the grid and provide a frame for the mounting of a louver, a lens, or a rectangular or square light LED light source to the ceiling support grid.

Technologies are described for a louver or lens holder having a rectangular or square frame with parallel first side edge and a second side edges. At least one extension extends from the first side edge and at least one retractable support arm is configured to be extended from, and retracted into, the second side edge. The louver or lens holder is configured to be inserted into a ceiling support grid and to be held therewith.

A system and method for creating a trompe-l'oeil skylight in a ceiling where a light emitting image of the sky is provided in a structure configured to emulate a skylight frame, including an embodiment of a unified non-rectangular sky image area in a substantially rectangular fixture which mount as a single unit into a substantially rectangular hole in a ceiling.

A method of creating a sculpted decorative ceiling with lighting fixtures in a suspended ceiling grid utilizing ceiling components constructed with structural side elements and a floor, forming a cavity that extends downward three to five inches. Each individual component has a perimeter installation flange enabling it to be installed into a new or existing ceiling grid system cell. The said components esthetic contours and functional structural side elements, as well as the size of the perimeter installation flange create space(s) between installed components, throughout an entire ceiling arrangement of said components or in specific areas of arrangements of said components, for luminesce channel(s) in which may be positioned one or more lighting fixtures, or combinations of lighting fixtures, attached to the room facing surfaces of the cross tee or main runner flanges that comprise the ceiling grid structural assembly. Components may have floor perimeter shapes approximately equal in area to the entire ceiling grid cell, or they may have floors perimeter shapes occupying only part of the ceiling grid cell with a filler section at right angles to the structural side elements of the component that extend co-planer to the perimeter installation flange. Ceiling components can come in a variety of floor profile shapes allowing the construction of a wide variety of arrangements in the suspended ceiling grid. The side panels and the floor can be created with a wide variety of decorative surfaces.

A method and assembly for laying and leveling adjacent tiles. The assembly includes a base member having a bottom plate and a cam tool. The cam tool is pivotally combined with the base member so that the cam tool rotates relative to the base member about an axis of rotation. The cam tool has a handle combined with a cam member. The cam member has a tile engaging surface around its outer periphery with a first portion that is a first distance from the axis of rotation and a second portion that is a second distance from the axis of rotation. Rotation of the cam tool around the axis of rotation causes the distance between the tile engaging surface and the bottom plate to change. One or more tiles is adapted to be placed between the tile engaging surface of the cam member and the bottom plate of the base member. The tiles are compressed between the tile engaging surface and the bottom plate as the cam tool is rotated to a desired position.

A stretched-web structure for producing a false ceiling or a dropped ceiling box in a room, including two flexible webs arranged parallel to one another and fastened stretched between at least one wall, wherein one of the webs is made of polyvinyl chloride and the other web is made of fabric.

A sound-absorbing element and a sound-absorbing system comprising a fibrous material having the following properties is described: specific airflow resistance comprised between 527 and 1552 [Pa s/m]; and mass porosity comprised between 66% and 79%.

An edgelit multifunctional lighting assembly is configured as a cross tee within a suspended ceiling system and supports at least one ceiling panel and is configurable to produce symmetric and asymmetric targeted light distributions for narrow and wide angle illumination applications.