Flexible or portable closure – partition – or panel – Pleating type – Lazy-tong links pivot about axes parallel to panel
Patent
1989-03-06
1991-04-09
Johnson, Blair M.
Flexible or portable closure, partition, or panel
Pleating type
Lazy-tong links pivot about axes parallel to panel
160 35, E06B 906
Patent
active
050056298
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention applies to the closure of passages where there is in particular a space problem.
The installation of a closure curtain which is resistant, sealing and fire-proof is often impossible in some cases such as car ferries or parking places, where any projection over the whole width of the ceiling or along the side walls reduces the section for passage of the vehicles over the whole surface of use.
An object of the present invention is to overcome this drawback and for this it provides a closure curtain which, while having great strength with respect to the hydrostatic pressure and shocks and providing excellent sealing, in the open position only takes up a minimum amount of room.
SUMMARY OF THE INVENTION
According to the invention, the curtain comprises a succession of thin high inertia metal sheet elements each formed of a shaped section comprising a wide central web and at least at one end a reinforcement forming an angle with said web, the shaped sections having hinged connections and being designed to fit into each other, in the open position of the curtain, with a minimum space occupation and to be positioned in a housing in a wall of the premises and, in the closed position, to open out across the passage, said shaped sections being possibly equipped with sealing members automatically providing sealing therebetween in the opened out position of the curtain, and sealing means being possibly provided for sealing the curtain on the sides thereof, whereas actuating members provide for operation of the curtain so as to pass from its open position to its closed position and conversely.
The shaped sections forming the curtain of the invention may have an L profile, the reinforcement part being practically perpendicular to the web of the section, and a hinge is disposed in the angle of the section and is connected to the end of the central web of the preceding section. In other embodiments, each shaped section may have, at the ends of the central web, two reinforcements substantially perpendicular to this web directed either in the same direction (U shaped profile) or in opposite directions (Z shaped profile), a hinge connecting together the adjacent reinforcements of two successive elements.
For closure, the curtain moves from top to bottom, which makes an emergency operation possible under its own weight, and its elements have decreasing dimensions so that the lower elements, exposed to the hydrostatic pressure or to shocks (from vehicles for example) are more resistant.
The device advantageously uses two slanted side walls, with inclined supports which serve as bolts. Sealing is provided by the pressure of the curtain on the seals carried by the side walls, due to the slant of the seals with respect to the movement of the curtain. Such sealing may be completed by a device for applying the seal, by inflation or by movement of the support wall. Such movement of the wall may have a sufficient amplitude to bring to a vertical position so as to have the maximum passage section available.
BRIEF DESCRIPTION OF THE DRAWINGS
To better understand the curtain of the invention, several preferred embodiments thereof will be described hereafter by way of examples without any limitative character, with reference to the accompanying drawings in which:
FIG. 1 is a vertical sectional view of a first embodiment of a curtain according to the invention, formed of a sucession of L shaped sections whose opening and closure movements take place vertically,
FIG. 2 is a vertical section on a larger scale through line II--II of FIG. 1, showing the system for locking the last element of the curtain to the ground,
FIG. 3 is a detail view showing the sealing between two successive elements of the curtain of FIG. 1,
FIG. 4 shows, in a variant, a side wall device with transverse movement providing lateral sealing of the curtain,
FIG. 5 is another variant showing a system for automatically positioning the elements of the curtain during its downward movement,
FIG. 6 is a horizontal section throug
REFERENCES:
patent: 2274216 (1942-02-01), Sanders
Drucker William A.
Johnson Blair M.
LandOfFree
Compact curtain for the closure of passages does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Compact curtain for the closure of passages, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Compact curtain for the closure of passages will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2027342