358results about "Movable stairways" patented technology

The instant invention includes a flexible fire-resistant thermally insulated composite structure designed in some embodiments to pass through an opening. The structure may be self-supporting due to the stiffness of various layers, and battens may contribute to the self-supporting capacity of the structure.The flexible composite structure may have a collapsed transit configuration, allowing the structure to be compressed to more easily pass it through an opening, a rotable attachment to allow the structure to rotate away from the opening, and a releasable attachment for attaching the structure around an opening periphery. In another embodiment, the structure may also include a bottom and such a structure could provide shelter in conditions ranging from ambient environmental conditions to the extreme heat of certain fires.The insulative structures of the instant invention are not limited to embodiments designed to rest on generally horizontal surfaces. For example, it may be desirable to utilize such a structure to block an attic fan, or other roof penetration, during certain seasons of the year. Such an embodiment may also include a releasable attachment configured for releasably attaching the installation periphery to a surface inclined from the horizontal.

A post to be used in conjunction with a gangway or other fall restraint equipment where the post defines an aperture having an upper portion and a lower portion such that the upper portion is configured to allow a link of a chain to pass there through while the lower portion allows the link to pass through in one orientation but prevents the link from passing through in a second orientation traverse to the first orientation.

The invention provides a staircase arrangement for use within a swimming pool. The staircase arrangement comprises a staircase and at least one suction device. The staircase includes a set of stairs, a bottom-facing surface and a wall-facing surface. Each of the at least one suction devices comprises an attachment portion for attachment to at least one of the bottom-facing surface and the wall-facing surface of the staircase and a suction portion suitable for establishing a suction connection with an interior surface of the swimming pool so as to secure the staircase to the interior surface of the swimming pool.

A thermal insulating cover is presented. The cover includes a top, a plurality of sides extending from the top and a wide base perimeter extending from the plurality of sides. The device may be formed as a unitary piece, or may be provided in two or more sections which are easily assembled together. A piece of foam, acting as a gasket may be affixed to the base perimeter.

The invention relates to a reinforced concrete stair with a local steel plate type sliding device on a support, which belongs to the field of the concrete structure and is mainly used for the building engineering. The reinforced concrete stair adopts a reinforced concrete cast-in-place plate-type stair, wherein the upper end of the reinforced concrete cast-in-place plate-type stair is integrally cast with a supporting construction member on a main body structure floor or a rest platform of the main body structure, and the lower end of the reinforced concrete cast-in-place plate-type stair is provided with a horizontally sliding support supported by the local steel plate. The setting method comprises the following steps of: on the lower surface at the lower end of a stair section plate and the upper surface of a lower-end supporting construction member, respectively arranging one row of upper embedded steel plates and one row of lower embedded steel plates which are pulled open for a space along the width direction of the stair section plate, correspond one by one vertically and extrude out of the support of a respective concrete surface; ensuring that the upper steel plates and the lower steel plates are in contact supporting; fully laying a graphite powder layer on the supporting surface; and keeping the rest of gaps as the gaps, or to be separated by a polystyrene foam plate. The reinforced concrete stair disclosed by the invention provides an economic technical measure convenient to implement for lightening earthquake damage to the building stair and the integral structure, and can be popularized and applied to the multi and high rise concrete building structure systems in a seismic area, especially to the frame structure.