摘要:
Loft stairs comprising a frame 1 which comprisies a four frame members joined together to form a rectangular frame, at least two folding ladder or scissor segments that move relative to each other, and a closing flap 2, where the frame 1 is located deeper in the ceiling than the closing flap 2, and in the area of that difference in depth of their seating there is an coplanar infill in the form of a covering strip that comes flush with the outer surface of the ceiling 4, the covering strip having an embedding section 3' and an attachment arm 3", and when installed, the attachment arm 3" lies beneath the plasterboard layer and is mounted to the ceiling wall by means of a screw 7, the frame 1 abuts on the inner surface 3.1' of the embedding section 3', and the outer surface 3.2' of the embedding section 3' lies beneath the surface covering the ceiling 4, e.g. under plaster.
摘要:
A loft ladder subframe assembly comprising a generally quadrangular subframe, a hatch door moveably couplable to the subframe at or about one lateral edge of the hatch door to allow the hatch door to be movable between an open position and a closed position. A multi-sectional loft ladder assembly being mountable on the upper surface of the hatch door, wherein at least one section of the multi-sectional loft ladder assembly is detachably couplable to the loft ladder subframe assembly.
摘要:
Le dispositif consiste en un support fixe (1) et en un plan (2) d'échelle ou d'escalier relié audit support fixe (1) par l'intermédiaire d'un bras articulé (3) à une extrémité sur le support fixe (1) et à l'extrémité opposée sur le plan (2) d'échelle ou d'escalier, un deuxième bras (4) plus long étant articulé sur le support fixe (1) et sur le plan (2) de manière à former un quadrilatère déformable pouvant être déployé en un mouvement amorti de sorte que le deuxième bras (4) formant palier soit sensiblement horizontal. De cette manière on obtient que les utilisateurs de ce dispositif destiné essentiellement comme escalier de secours soient à l'abri des flammes ou des fumées qui s'échappent par les fenêtres des immeubles en cas d'incendie.
摘要:
Eine schwenkbare Treppe, insbesondere für Fahrzeuge, weist einen mit Trittplatten (1a) oder Sprossen versehenen Treppenkörper (1) auf, der in einer ortsfesten Schwenklagerung (2) mit horizontaler Drehachse gehalten ist. Um den Treppenkörper (1) in seiner begehbaren Stellung unabhängig von der Beschaffenheit des Bodens (5) in stabiler Weise zu positionieren und weitestgehend unfallfrei benutzen zu können, steht der Treppenkörper (1) über mindestens ein Traggestänge (3), das aus zwei durch ein Gelenk (3c) miteinander gekoppelten Hebeln (3a, 3b) gebildet ist, mit einem ortsfesten Traglager (4) in Verbindung, wobei das Traggestänge (3) im Sinne eines Handgeländers und für eine Aufnahme sämtlicher, aus der Eigenlast des Treppenkörpers (1) und dessen Belastung durch Personen resultierenden Zugkräfte ausgebildet ist.
摘要:
An arrangement for enabling the installation of a loft ladder subframe assembly in the aperture of a ceiling. The arrangement providing a quick and easy support structure to initially support the weight of a loft ladder subframe assembly to allow for the permanent installation of the loft ladder subframe assembly.
摘要:
A combined stairway and lift installation has a stairway (13) which comprises a stack of horizontally movable step members (14 to 16) whereby the stairway (13) is retractable to expose a lift (18) which is installed in a cavity (19) which is covered by the stairway (13) when the latter is extended. Uncovering of the lift (18) allows it to be operated to raise its load carrying platform to the level of the top of the stairway (13). A chain (63) is anchored by either end (64, 65) in the bottom step member (14). The chain (63) is led from the anchorage up through the step members (14 to 17), alternately clockwise and counter clockwise around guide rollers (43, 49) mounted in each of the movable step members (14 to 16), clockwise around a guide roller (34) and a motor-driven cog wheel (32) in the top step member (17), and back down through the movable step members (14 to 16) to the other anchorage (64) again alternately clockwise and counter clockwise around further guide rollers (44, 48) mounted in each of the movable step members (14 to 16). The motor is reversible so that in one sense it drives the movable step members (14 to 16) to form the stairway (13) and in the other sense it drives them to their retracted position.
摘要:
Foldable or retractable ladder, especially for use at an opening in the ceiling, for example, to an upper storey such as an attic in a building or the like, which ladder comprises a plurality of sections (11, 12, 13) arranged in operative position of the ladder, in such a manner, that the upper section (13) of the ladder by hinge members (15) is pivotally attached to a frame (14) for the door opening, and the folding-down movement of the ladder is limited by a toggle joint arrangement (16, 17) attached to the upper section (13) of the ladder. The toggle joint arrangement consists of two toggle joints attached to each side of the frame and, respectively, each side rail of the ladder and interconnected at the ladder by means of an axle (18) extending in parallel with the runs.