Provided is a breakaway-prevent trolley system for a flexible retractable structure, including a plate that supports a cable, and a trolley that is movable on the cable and folds or unfolds a flexible film. The trolley includes: a slider movable along the cable; a flexible film coupling member provided under the slider and coupled to the flexible film; an elastic module (E) provided inside the slider. The elastic module includes: an elastic block including a spring therein and moving under an elastic force of the spring by a predetermined distance in a vertical direction; and an upper support plate that supports the elastic block from above, a side support-plate that supports the elastic block from a side, and a lower support plate that supports the elastic block from below, and a lower surface of the elastic block vertically movable while in contact with an upper surface of the plate.

A retractable roof system includes a support structure, having a first vertical leg, a second vertical leg, a third vertical leg, and a fourth vertical leg extending upward from a ground surface; a first guide track extending from the first vertical leg to the second vertical leg; a second guide track extending from the third leg to the fourth leg; a first support beam connecting the first vertical leg and the third vertical leg; and a second support beam connecting the second vertical leg and the fourth vertical leg; a roof retractably secured on the support structure, the roof having: a frame having a first edge aligned with the first track and a second edge aligned with the second track; rollers connected to the first edge and the second edge to slidingly engage with the first track and the second track; and a flexible roofing material secured on the roof frame; a pulley attached to the first end of the frame; force exerted on the pulley pulls a set of the rollers towards a center of the roof, causing a first end of the frame to retract.

The present disclosure describes an expandable residential dwelling unit and a set of modular, prefabricated components which can be built offsite, shipped to site, and assembled. The prefabricated components and expandable dwelling unit enable faster, and more cost effective method for adding additional square footage onto a residential dwelling unit. These prefabricated wall components attach to the existing dwelling unit via mechanical connections that maintain a constant thermal and water barrier. Multiple preferred aspects are described herein.

A retractable roof system (30) for a large building structure (32) for selectively closing off an opening (39) of a fixed roof (34) of the building structure (32), the system includes at least one roof section (40) movably mountable on at least one pier (42) of substantially C-section when viewed in profile. The or each pier (42) comprises a ground-engaging foot (43) with an upstanding substantially columnar portion (48) leading to a substantially horizontal top section (50) provided with a movable bracket (44) reciprocable in guide channels (54) formed in the top section (50) and actuable by a deployment mechanism (46).

A slat roof (1) comprising beams (2), a plurality of slats (3) arranged parallel to one another therebetween and slat shafts (4) by means of which the slats (3) are rotatably fixed to the respective beams (2), wherein at least one slat shaft (4) is hollow and wherein the slat roof (1) comprises at least one corresponding tensioning cable (5) which is inserted through said hollow slat shaft (4) and the ends of which are fixed to the respective beams (2). In addition, a method for adapting a slat roof.

A collapsible modular building is constructed from at least two building modules that are joined together to form the building. Each building module is constructed to be configured in either a collapsed or erect position. In the collapsed position, each module is individually transported to a site by trailer. Once offloaded, the modules are joined together to form the building, this joining together of the modules can be done while the modules are in the collapsed position or in the erect position.

The invention relates to a console with the aid of which large roofs and facade elements can be horizontally or vertically retracted.

The invention relates to a console with the aid of which large roofs and facade elements can be horizontally or vertically retracted.

A movable enclosure is configured to selectively enclose an area. The enclosure includes at least one side wall and an end wall attached thereto. The side wall comprises a number of individual panels that are independently movable along a track secured to the ground. The panels are selectively collapsible such that they may travel along the track and overlap one another when in a collapsed or stowed position. The enclosure may be configured in any number of intermediate positions wherein the panels are partially collapsed. Roof panels may be attached to the side walls for movement therewith, or alternatively, the roof panels may operate independent of the side walls to extend and retract between an open and collapsed configuration.

A release mechanism for a transport carriage used to move an elongated beam or truss is constructed using a non-linear bearing mounted on the carriage and connected to the truss and including upper and lower bearing mounting surfaces having complementary arcuate surfaces and a layer of layers of lower friction bearing material between them. The upper and lower bearing mounting surfaces being arranged to allow one plate to move relative to the other in an arcuate path in the direction of the space of the beam or truss.