CA2097991A1 - Raisable-curtain goods-handling door with improved lateral sealing - Google Patents
Raisable-curtain goods-handling door with improved lateral sealingInfo
- Publication number
- CA2097991A1 CA2097991A1 CA002097991A CA2097991A CA2097991A1 CA 2097991 A1 CA2097991 A1 CA 2097991A1 CA 002097991 A CA002097991 A CA 002097991A CA 2097991 A CA2097991 A CA 2097991A CA 2097991 A1 CA2097991 A1 CA 2097991A1
- Authority
- CA
- Canada
- Prior art keywords
- curtain
- door
- sheet material
- constriction
- lateral
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
- E06B9/58—Guiding devices
- E06B9/581—Means to prevent or induce disengagement of shutter from side rails
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
- E06B9/08—Roll-type closures
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
- E06B9/08—Roll-type closures
- E06B9/11—Roller shutters
- E06B9/13—Roller shutters with closing members of one piece, e.g. of corrugated sheet metal
- E06B2009/135—Horizontal shutter reinforcements
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
- E06B9/58—Guiding devices
- E06B2009/585—Emergency release to prevent damage of shutter or guiding device
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
- Curtains And Furnishings For Windows Or Doors (AREA)
Abstract
A B S T R A C T
A raisable flexible curtain door for closing a door-bay, the door including two lateral uprights each having a slideway that forms a constriction, the curtain substantially forming a plane and having lateral edges that slide in respective ones of said constrictions and that are provided with relief projecting out from the plane of the curtain, said relief being disposed substantially continuously along the lateral edges of the curtain and being adapted to bear in substantially sealed manner against the constrictions of the slideways at least while the curtain is being subjected to a traction force directed towards the inside of the door-bay, said relief being sufficiently flexible to be able to pass through said constrictions when said traction force exceeds a determined value, wherein said relief is constituted by a resilient flexible material in sheet form secured to the lateral edges of the curtain, and said sheet material extends outwardly from each lateral edge of the curtain on either side of the plane of the curtain.
A raisable flexible curtain door for closing a door-bay, the door including two lateral uprights each having a slideway that forms a constriction, the curtain substantially forming a plane and having lateral edges that slide in respective ones of said constrictions and that are provided with relief projecting out from the plane of the curtain, said relief being disposed substantially continuously along the lateral edges of the curtain and being adapted to bear in substantially sealed manner against the constrictions of the slideways at least while the curtain is being subjected to a traction force directed towards the inside of the door-bay, said relief being sufficiently flexible to be able to pass through said constrictions when said traction force exceeds a determined value, wherein said relief is constituted by a resilient flexible material in sheet form secured to the lateral edges of the curtain, and said sheet material extends outwardly from each lateral edge of the curtain on either side of the plane of the curtain.
Description
209~799:~.
:' 1 A RAISABLE-CURTAIN GOODS-HANDLING DOOR WITH IMPROVED :
LATERAL SEALING
The present invention relates to a raisable-curtain door with improved lateral sealing, for the purpose of reducing flow of air past the door, for limiting heat exchange, and/or for limiting penetration of dust o~
microorganisms into premises.
BACKGROUND OF THE INVENTION ~ `:
Such do~rs generally comprise two lateral uprights provided with respective slideways in which the lateral portions of the curtain slide. European patent No. 0 194 194 describes means for avoiding a flow of air between the slideways and the lateral portions of the curtain.
According to that patent, the lateral uprights are channel section members having a web wall that is substantially perpendicular to the curtain, and two flange walls that extend from the web, parallel to the curtain, and towards the curtain. The lateral edges of the curtain are extended by a strip of flexible material that rubs against the web of the channel section.
In such a solution, to obtain excellent sealing between the lateral edges of the curtain and the slideways, it is necessary to accept a large amount of friction between said strip of flexible material and the `~
slideways. This gives rise to a large amount of energy being lost when the curtain is moved. This drawback is particularly troublesome in "goods-handling" doors which are required to open and close quickly a large number of times a day, on each occasion that a goods-handling 30 vehicle passes through. ;
Document EP 0 033 199 describes a raisable-curtain door having a flexible curtain made of rubber and provided with thick lateral edges that slide in slideways. The slideways have a constriction disposed between the thick edge of the curtain and the door-bay to be closed. That type of door is particularly intended to provide substantially sealed closure between lengths of a- -::
209'7~91.
mine that are maintained at a determined pressure. Thethick edges of the curtain are deformable so as to pass through the constriction of the slideway in the event of the curtain being subjected to a violent shock. However, under such circumstances, the thick edge of the curtain may jam in the constriction of the slideway, thereby subsequently preventing the curtain being raised and ~ -locking the door in the closed position.
OBJECTS AND SUMMARY OF THE INVENTION
An object of the present invention is to remedy the above drawback.
The present invention provides a raisable flexible curtain door for closing a door-bay, the door including ~ -two lateral uprights each having a slideway that forms a ~ -constriction, the curtain substantially forming a plane and having lateral edges that slide in respective ones of said constrictions and that are provided with relief projecting out from the plane of the curtain, said relief being disposed substantially continuously along the lateral edges of the curtain and being adapted to bear in substantially sealed manner against the constrictions of the slideways at least while the curtain is being sub;ected to a traction force directed towards the inside of the door-bay, said relief being sufficiently flexible to be able to pass through said constrictions when said traction force exceeds a determined value, wherein said relief is constituted by a resilient flexible material in sheet form secured to the lateral edges of the curtain, and said sheet material extends outwardly from each lateral edge of the curtain on either side of the plane of the curtain. In this way, the lateral edges of the curtain can be deformed so as to present very small thickness, thereby ensuring that they do not jam in the constrictions of the slideways when they are partially extracted from the slideways, thus making it certain that the curtain can be raised unde- all circumstances.
' ' ,:
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2097391.
-~ 3 . , The sheet material may include two lateral sheets each secured to one of said lateral edges of the curtain, and each extending to one side of the plane of the curtain, diverging away from the lateral edge of the curtain, or else it may comprise a single sheet in the form of a loop constituting a hollow bead secured to the lateral edge of the curtain. Advantageously, said sheet material may extend continuously along each lateral edge of the curtain. In a variant, said sheet material may ~0 include horizontal cutouts to facilitate deformation of -the curtain out of its own plane, e.g. on being wound around an axis while the curtain is being raised.
In an advantageous embodiment, said constriction of the slideway of each upright includes ribs directed towards said sheet material and extending continuously parallel to the lateral edge of the curtain, which ribs are adapted to bear with substantially sealing contact against said sheet material, at least while the curtain -is being subjected to traction force directed towards the inside of the door-bay. In any event, regardless of whether the constriction includes ribs or not, it is possible for said sheet material to include ribs directed towards the constriction of the slideway of an uprigh-t, said ribs extending substantially continuously parallel to the lateral edge of the curtain and being adapted to bear in sealing contact against said constriction, at least when the curtain is subjected to a traction force directed towards the inside of the door-bay.
In another embodiment of the invention, the sheet material on each lateral edge of the curtain includes relief facing the constriction of the slideway in the upright, and said constriction includes relief against which said relief of the sheet material comes into abutment when the curtain is subjected to a traction force directed towards the inside of the door-bay.
In another embodiment of the in~ention, said constriction of the slideway in each upright includes , : ~ : ' . :
:' 1 A RAISABLE-CURTAIN GOODS-HANDLING DOOR WITH IMPROVED :
LATERAL SEALING
The present invention relates to a raisable-curtain door with improved lateral sealing, for the purpose of reducing flow of air past the door, for limiting heat exchange, and/or for limiting penetration of dust o~
microorganisms into premises.
BACKGROUND OF THE INVENTION ~ `:
Such do~rs generally comprise two lateral uprights provided with respective slideways in which the lateral portions of the curtain slide. European patent No. 0 194 194 describes means for avoiding a flow of air between the slideways and the lateral portions of the curtain.
According to that patent, the lateral uprights are channel section members having a web wall that is substantially perpendicular to the curtain, and two flange walls that extend from the web, parallel to the curtain, and towards the curtain. The lateral edges of the curtain are extended by a strip of flexible material that rubs against the web of the channel section.
In such a solution, to obtain excellent sealing between the lateral edges of the curtain and the slideways, it is necessary to accept a large amount of friction between said strip of flexible material and the `~
slideways. This gives rise to a large amount of energy being lost when the curtain is moved. This drawback is particularly troublesome in "goods-handling" doors which are required to open and close quickly a large number of times a day, on each occasion that a goods-handling 30 vehicle passes through. ;
Document EP 0 033 199 describes a raisable-curtain door having a flexible curtain made of rubber and provided with thick lateral edges that slide in slideways. The slideways have a constriction disposed between the thick edge of the curtain and the door-bay to be closed. That type of door is particularly intended to provide substantially sealed closure between lengths of a- -::
209'7~91.
mine that are maintained at a determined pressure. Thethick edges of the curtain are deformable so as to pass through the constriction of the slideway in the event of the curtain being subjected to a violent shock. However, under such circumstances, the thick edge of the curtain may jam in the constriction of the slideway, thereby subsequently preventing the curtain being raised and ~ -locking the door in the closed position.
OBJECTS AND SUMMARY OF THE INVENTION
An object of the present invention is to remedy the above drawback.
The present invention provides a raisable flexible curtain door for closing a door-bay, the door including ~ -two lateral uprights each having a slideway that forms a ~ -constriction, the curtain substantially forming a plane and having lateral edges that slide in respective ones of said constrictions and that are provided with relief projecting out from the plane of the curtain, said relief being disposed substantially continuously along the lateral edges of the curtain and being adapted to bear in substantially sealed manner against the constrictions of the slideways at least while the curtain is being sub;ected to a traction force directed towards the inside of the door-bay, said relief being sufficiently flexible to be able to pass through said constrictions when said traction force exceeds a determined value, wherein said relief is constituted by a resilient flexible material in sheet form secured to the lateral edges of the curtain, and said sheet material extends outwardly from each lateral edge of the curtain on either side of the plane of the curtain. In this way, the lateral edges of the curtain can be deformed so as to present very small thickness, thereby ensuring that they do not jam in the constrictions of the slideways when they are partially extracted from the slideways, thus making it certain that the curtain can be raised unde- all circumstances.
' ' ,:
: "'':
2097391.
-~ 3 . , The sheet material may include two lateral sheets each secured to one of said lateral edges of the curtain, and each extending to one side of the plane of the curtain, diverging away from the lateral edge of the curtain, or else it may comprise a single sheet in the form of a loop constituting a hollow bead secured to the lateral edge of the curtain. Advantageously, said sheet material may extend continuously along each lateral edge of the curtain. In a variant, said sheet material may ~0 include horizontal cutouts to facilitate deformation of -the curtain out of its own plane, e.g. on being wound around an axis while the curtain is being raised.
In an advantageous embodiment, said constriction of the slideway of each upright includes ribs directed towards said sheet material and extending continuously parallel to the lateral edge of the curtain, which ribs are adapted to bear with substantially sealing contact against said sheet material, at least while the curtain -is being subjected to traction force directed towards the inside of the door-bay. In any event, regardless of whether the constriction includes ribs or not, it is possible for said sheet material to include ribs directed towards the constriction of the slideway of an uprigh-t, said ribs extending substantially continuously parallel to the lateral edge of the curtain and being adapted to bear in sealing contact against said constriction, at least when the curtain is subjected to a traction force directed towards the inside of the door-bay.
In another embodiment of the invention, the sheet material on each lateral edge of the curtain includes relief facing the constriction of the slideway in the upright, and said constriction includes relief against which said relief of the sheet material comes into abutment when the curtain is subjected to a traction force directed towards the inside of the door-bay.
In another embodiment of the in~ention, said constriction of the slideway in each upright includes , : ~ : ' . :
2~9'7991.
~- 4 skids or rolling means disposed at a certain distance from each side of the plane of the curtain, facing the sheet material.
In yet another embodiment of the invention, said sheet material includes skids or rolling means disposed at a certain distance from each side of the plane of the curtain, facing the constriction of the slideway in each ~
of the side uprights. -BRIEF DESCRIPTION OF THE DRAWINGS
Other characteristics and advantages of the invention appear from the following description of several embodiments of the invention given as non-limiting examples and described with reference to the accompanying drawings, thus making it clear how the 15 invention can be performed. ;
In the drawings: -Figure 1 is an overall perspective view of an example of a door of the invention;
Figures 2 and 3 are diagrams showing two possible ways in which the curtain can be raised;
Figure 4 shows one embodiment of a lateral edge of the curtain;
Figure 5 shows another embodiment of a lateral edge of the curtain;
Figure 6 shows how the curtain of Figures 4 and 5 can be wound about an axis;
Figure 7 shows the lateral edge of the curtain of Figure 5 or of Figure 6, in cross-section and prior to being installed in the slideway;
Figure 8 shows a variant of the Figure 7 lateral edge; -Figure 9 is a section view showing the position of the lateral edge of Figure 7 in a slideway of the door while the curtain is not being subjected to a traction force directed towards the inside o~ the door-bay;
Figure 10 is a view similar to Figure 9 for when the curtain is being subjected to a wind force;
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Figure 11 is another view similar to Figure 9, for -when the curtain is subjected to a violent shock;
Figure 12 is a section view through a variant of the Figure 7 lateral edge;
Figure 13 is a perspective view of a particular embodiment of the lateral edge of a curtain of the invention;
Figure 14 is a detail view of Figure 13;
Figures 15 and 16 show two particular embodiments of -the lateral edge of a curtain of the invention;
Figures 17 and 18 show two particular embodiments of the slideway of the invention;
Figure 19 shows a particular embodiment of the lateral edge of the curtain of the invention, in place in its slideway;
Figure 20 is a v-iew similar to Figure 19, when a traction force is applied to the curtain; and -~
Figure 21 is a view similar to Figure 19, in which the lateral edge of the curtain is analogous to that of Figure 17 but the slideway is provided with internal wheels.
In the drawings, the same references designate parts that are identical or similar.
MORE DETAILED DESCRIPTION
In the following description, adjectives such as -"vertical" or "horizontal" are sometimes used. It should nevertheless be observed that such ad~ectives are used merely for linguistic convenience and that they are not limiting in any way. Thus, the adjective "vertical"
3b should be understood as meaning "parallel to the lateral edges of the curtain", and the adjective "horizontal"
should be understood as meaning "perpendicular to the -lateral edges of the curtain".
With reference to Figure 1, the door of the 35 invention has two lateral uprights 1 and 2 on either side of a door-bay 5 that is open in a wall 9 of a building.
Each of the lateral uprights 1 and 2 includes a slideway - .~
- - ..., ,. ~ - :. : :
: ~. ' : . ; ~ ' .
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that forms a constriction 7 in the vicinity of the door- -bay 5, with the constriction 7 delimiting a vertical slot 8. In the particular example shown in Fiyure 1, the vertical lateral uprights are channel-section members, - -e.g. made of metal. Thus, in this example, the constriction of the slideway is constituted by a web wall 7 having two flange walls 10 extending away from the door-bay 5, bu~ providing they have constrictions 7, the uprights 1 and 2 could be of any other configuration without going beyond the scope of the present invention.
The door of Figure 1 also has a raisable curtain 4 which includes lateral edges 4a that slide in the slot 8 of the respective lateral upright. The curtain 4 is flexible, such that when a force is applied to it perpendicularly to its plane, said force gives rise to traction on the lateral edges 4a of said curtain, thereby --tending to extract said lateral edges 4a from the slots 8. In the particular example shown in Figure 1, the ;~
curtain 4 further includes horizontal reinforcing bars 6.
It i9 essential for these bars to be sufficiently flexible to enable the edges 4a to escape from their slots 8 when sufficient force is applied to the curtain 4 ~-~
perpendicularly to its plane, e.g. in the event of a -"-shock from a goods-handling vehicle colliding with the 25 curtain 4. ;
In the particular example shown in Figure 1, the door further includes a cross-member 3 which inter-connects the top ends of the lateral uprights 1 and 2. ~
Such a cross-member 3 could optionally be omitted without ~ ~;
thereby going beyond the scope of the present invention.
! ' The curtain of the door of the present invention may be raisable in several different ways. For example, as -shown in Figure 2, the curtain 4 may be raisable by being ~
wound about a horizontal axis 11 situated at the top of ~ ~ ;
the door. In a variant, as shown in Figure 3, the lateral uprights 1 and 2 of the door may be extended upwardly by slideways 15 and 16 in which the lateral - -:, . ..
. - ,, ~" ..~ ,', .' . ,.` ' . ,' . ', -2()97991.
edges 4a of the curtain 4 can slide. Under suchcircumstances, the curtain 4 is raised without being wound, merely by sliding along the slideways 15 and 16.
The curtain 4 may be actuated by mechanical or electromechanical means that are well known in the art.
As shown in Figure 4, each lateral edge 4a of the curtain 4 of the door of the present invention may include two sheets of resilient material 20 and 21 which extend continuously up the entire height of the lateral edge 4a, on respective sides of the plane of the curtain.
Each of the sheets 20 and 21 is secured to the lateral edge 4a of the curtain and extends from said lateral edge 4a in a direction that is not parallel to the plane of the curtain 4. The lateral edge 4a of the curtain thus has a Y-shaped or T-shaped section.
As shown in Figure 7, the flexible sheets 20 and 21 may each include a respective portion 20a or 21a that is parallel to the plane of the curtain, and a respective portion 20b or 21b that is bent out from the plane of the curtain. In the example shown in Figure 7, each portion 20a, 21a parallel to the plane of the curtain is at an angle of substantially 90 to the c~orresponding outwardly-directed portion 20b, 21b. However, the angle may be other than 90 providing it is not as much as 180. Each portion 20a, 21a parallel to the plane of the curtain is fixed to the curtain by any conventional means, e.g. by sewing, welding, gluing, hot pressing, etc.
In a variant, as shown in Figure 8, the sheets 20 and 21 may be secured to each other in the vicinity of the junction 22 between their portions parallel to the curtain and their outwardly-directed portions.
Optionally, the sheets 20 and 21 may thus be formed as a single piece.
As shown in Figure 5, the outwardly-directed portions 20b and 21b of each flexible sheet 20 and 21 may include horizontal slits 23 spaced apart up the height of ~:
~:
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the lateral edge 4a of the curtain. This makes it easier to deform the curtain 4 out from its own plane, e.g. when the curtain 4 is being wound up because it is being raised. As shown in Figure 6, the curtain 4 is then wound on a rotary roller 24 about an axis 11. It may be advantageous for the axial extent of the roller 24 to be equal to or slightly less than the width of the curtain 4 itself, such that the outwardly-directed portions 20b and 21b of the flexible sheets 20 and 21 wind up beyond the axial ends 25 of said roller 24. This prevents the outwardly-directed portions 20b and 21b giving rise to local excess thickness while the curtain is being wound up.
Figure 9 shows the disposition of the lateral edge 15 4a of Figure 7 when it is inserted in a slideway ~;
constituted by a constriction 7 of a lateral upright 1. -So long as the curtain 4 is not being subjected to any force perpendicularly to its own plane, its lateral edge 4a is not subjected to any traction force towards the 20 inside of the door-bay 5. In the example shown in Figure ~ ;
9, the outwardly-directed portions 20b and 21b of the flexible sheets 20 and 21 are deformed a little away from the door-bay 5 so that their respective free edges 20c and 21c are in resilient contact with the constriction 7 of the upright. In this way, said sheets 20 and 21 provide sealed contact between the curtain 4 and the lateral uprights 1 and 2 without the friction between the constriction 7 and said sheets 20 or 21 becoming large.
While the curtain 4 is being raised, said sheets 20 and 21 rub against the constriction 7 via their free ends 20c and 21c only, such that the friction area is limited.
It would optionally be possible to provide for the - -~
flexible sheets 20 and 21 to be completely out of touch with the constriction 7 providing the curtain 4 is not 35 being sub~ected to any force. As shown in Figure 10, as -soon as an air pressure difference comes into existence between the two faces of the curtain 4, e.g. because of . ,, ., ., ., ,- , ~ ~ ." . . ..
~ 2099'~991.
the wind, or because premises are being kept under raised pressure or under reduced pressure, the curtain 4 is subjected to a traction force directed to-~ards the inside of the door-bay 5. As a result, the flexible sheets 20 and 21 are pulled by the curtain 4 into the door-bay 5 such that their outwardly~directed portions 20b and 21b bear in sealed manner against the constriction 7 of each upright 1, 2. The door of the invention thus ensures that practically no significant flow of air can take 10 place through the door-bay 5 when the curtain 4 is down. -When an air pressure difference exists between the two faces of the curtain 4, the flexible sheets 20 and 21 bear against the constriction 7 with considerable resilient force, and the contact area between the flexible sheets and the constriction 7 may well be increased. As a result, friction between said flexible sheets 20, 21 and the constriction 7 also increases.
However, it will be observed that when the curtain is raised, the pressure between the two faces tends to equalize because of the air that can escape beneath the curtain. The curtain therefore tends to return to the shape shown in Figure 9 in which friction between the constriction 7 and the flexible sheets 20, 21 is reduced or even eliminated. This ensures that the energy consumed while moving the curtain 4 is limited.
8ecause of the flexibility of the sheets 20 and 21, in the event of the curtain 4 receiving a shock of sufficient strength, the outwardly-directed portions 20b and 21b of said sheets tend to line up with the curtain 4, as shown in Figure 11, thereby enabling the lateral edge 4a of the curtain to escape from the constriction 7.
This prevents the curtain itself being damaged.
In addition, if a portion of a lateral edge 4a of the curtain 4 is not fully extracted from the slot 8 delimited by the constriction 7, said lateral edge 4a does not remain jammed in the slot 8. The total thickness of the flexible sheets 20, 21 is-less than the ~097g91.
. '-width of the slot 8. Thus, if a portion of a lateral edge 4a of the curtain 4 remains in the slot 8, that does not prevent the curtain 4 from being raised. It is therefore certain that the door will not be jammed in its closed position after a shock, which would be extremely inconvenient in running an industrial installation.
As shown in Figure 16, the outwardly-directed portions 20b and 21b of the flexible sheets 20 and 21 may include ribs 27 extending parallel to the lateral edge 4a --of the curtain. These ribs 27 are directed towards the constriction 7 of the lateral upright and are suitable for bearing resiliently in sealed manner against said constriction 7. Thus, the ribs 27 put a limit on the contact area between the constriction 7 and the flexible sheets 20 and 21, thereby putting a limit on the friction between the constriction 7 and said flexible sheets 20 and 21 while the curtain 4 is sliding. ;~
As shown in Figure 17, the constriction 7 of each upright 1, 2 may optionally include ribs 28 extending parallel to the lateral edge 4a of said curtain and extending towards the sheets 20 and 21 of said lateral edge 4a, on either side of the plane of the curtain 4. ;
These ribs 28 also have the effect of limiting friction between the constriction 7 and said sheets 20 and 21 while the curtain 4 is sliding. In addition, it is advantageously possible to provide said ribs 28 on the constriction 7 and said ribs 27 on the flexible sheets 20 and 21. This increases the traction force that needs to be applied to the curtain 4 in order to extract the lateral edges 4a o~ said curtain from the constrictions 7. The ribs 28 of the constriction 7 may be integrally formed with said constriction 7, as shown in Figure 17, or else, as shown in Figure 18, the ribs 28 may be gaskets made of elastomer or of some other flexible material and applied to the constriction 7.
As shown in Figure 19, it may be advantageous for the outwardly-directed portions 20b and 21b to include- -:,:,., ~;
~` 209'799~
wheels in the vicinity of their respective free edges 20cand 21c and adapted to run vertically along the constriction 7, while keeping a gap between the constriction 7 and said outwardly-directed portions 20b and 21b so long as no traction force is being applied to the curtain 4. In such a configuration, there is no sealing contact between the constriction 7 of each lateral upright of the door and the flexible sheets 20 and 21. The wheels 29 serve to eliminate substantially all friction between the constriction 7 of each lateral upright of the door and the flexible shee-ts 20 and 21, thereby achieving considerable energy saving. As shown in Figure 20, as soon as an ambient pressure difference occurs between the two faces of the curtain, such as could entrain a flow of air round the sides of said curtain, said pressure difference causes the curtain to deform, thereby applying a traction force on the curtain 4 towards the inside of the door-bay 5. As a result, the flexible sheets 20 and 21 are displaced towards the inside of the door-bay 5 such that the outwardly-directed portions 20b and 21b of said flexible sheets 20 and 21 come into sealing contact with the constriction 7 along the edges of the slot 8. Air therefore never flows between the lateral edges of the curtain 4 and the uprights 1, 2.
As shown in Figure 21, in a variant, wheels 29' could be disposed on the constriction 7 instead of being disposed on the outwardly-directed portions 20b and 21b of said flexible sheets 20 and 21.
In another variant, as shown in Figure 15, the wheels 29'can be replaced by skids 30 which may be disposed on the outwardly-directed portions 20b and 21b of the flexible sheets 20 and 21 in the vicinity of their respective free ends 20c and 21c. In a variant, the skids 30 may be disposed on the constriction 7, like the wheels of Figure 21.
209~7991.
, As shown in Figure 12, instead of including two ;~
resilient flexible sheets 20 and 21 disposed on either side of the plane of the curtain 4, the lateral edge 4a of the curtain may be fixed to a single resilient flexible sheet 26 looped in the form of a bead that extends longitudinally up the lateral edge 4a of the curtain. The flexible sheet 26 has two ends 26a and 26b ~ ~
which are fixed to the lateral edge 4a of the curtain, by -any conventional means. In the vicinity of the edge of the curtain 4, the flexible sheet 26 moves out from the plane of the curtain 4 to opposite sides of said plane so that the lateral edge 4a of the curtain locally presents ;~ ;
a Y-shaped section, as described above. The curtain 4 ~ ~ ;
shown in Figure 12 thus behaves in exactly the same manner as the curtain described before, and may have the same variants applied thereto. -As shown in Figures 13 and 14, when the curtain 4 includes horizontal reinforcing bars 6 that slide in the lateral uprights 1 and 2, said bars are generally engaged in sheaths formed in the curtain 4. As a result, it may be difficult to fix the resilient flexible sheets as described above to the lateral edge of the curtain 4 in the vicinit~ of the bars 6. For example; if the fixing -is done by sewing or by hot-pressing, then it runs the risk o locally obstructing the sheaths for receiving the bars 6. To avoid this drawback, it is possible to use the solution shown in Figure 13. The lateral edge 4a of the curtain includes a single flexible sheet 26 that is looped and has both edges 26a fixed to the edges of the curtain 4. The sheet 26 extends along the entire height of the lateral edge 4a of the curtain, but it is -interrupted level with each horizontal bar 6. In order to avoid loosing sealing at the end of each horizontal bar 6, each end 6a of each bar 6 is engaged in a sealing member 31, one of which can be seen in Figure 14. Each sealing member 31 has a front portion 32 adapted to be engaged on the end 6a of the bar 6, and a rear portion 33 ' :" ~ , ,, '-....
209'7991.
which may include two resilient flexible sheets 34 and 35 that extend from the front portion 32 outwardly from the curtain 4, and diverging on either side of the plane of the curtain 4. The rear portion 33 is adapted to bear in sealed manner against the constriction 7 of the slideway in which the lateral edge 4a of the curtain slides.
Instead of including two flexible sheets 34 and 35, the rear portion 33 could include a single flexible sheet that is looped back and has both ends fixed to the front portion 32. In the example shown in Figure 14, the front portion 32 of the sealing member 31 includes two resilient sheets 35 and 36 that are connected together at a rear end 37 and that are adapted to engage on the horizontal bars 6 of the curtain 4 starting from the lateral edge 4a of the curtain, clamping resiliently onto said bars 6 and onto said curtain 4.
~- 4 skids or rolling means disposed at a certain distance from each side of the plane of the curtain, facing the sheet material.
In yet another embodiment of the invention, said sheet material includes skids or rolling means disposed at a certain distance from each side of the plane of the curtain, facing the constriction of the slideway in each ~
of the side uprights. -BRIEF DESCRIPTION OF THE DRAWINGS
Other characteristics and advantages of the invention appear from the following description of several embodiments of the invention given as non-limiting examples and described with reference to the accompanying drawings, thus making it clear how the 15 invention can be performed. ;
In the drawings: -Figure 1 is an overall perspective view of an example of a door of the invention;
Figures 2 and 3 are diagrams showing two possible ways in which the curtain can be raised;
Figure 4 shows one embodiment of a lateral edge of the curtain;
Figure 5 shows another embodiment of a lateral edge of the curtain;
Figure 6 shows how the curtain of Figures 4 and 5 can be wound about an axis;
Figure 7 shows the lateral edge of the curtain of Figure 5 or of Figure 6, in cross-section and prior to being installed in the slideway;
Figure 8 shows a variant of the Figure 7 lateral edge; -Figure 9 is a section view showing the position of the lateral edge of Figure 7 in a slideway of the door while the curtain is not being subjected to a traction force directed towards the inside o~ the door-bay;
Figure 10 is a view similar to Figure 9 for when the curtain is being subjected to a wind force;
;~0979~1.
Figure 11 is another view similar to Figure 9, for -when the curtain is subjected to a violent shock;
Figure 12 is a section view through a variant of the Figure 7 lateral edge;
Figure 13 is a perspective view of a particular embodiment of the lateral edge of a curtain of the invention;
Figure 14 is a detail view of Figure 13;
Figures 15 and 16 show two particular embodiments of -the lateral edge of a curtain of the invention;
Figures 17 and 18 show two particular embodiments of the slideway of the invention;
Figure 19 shows a particular embodiment of the lateral edge of the curtain of the invention, in place in its slideway;
Figure 20 is a v-iew similar to Figure 19, when a traction force is applied to the curtain; and -~
Figure 21 is a view similar to Figure 19, in which the lateral edge of the curtain is analogous to that of Figure 17 but the slideway is provided with internal wheels.
In the drawings, the same references designate parts that are identical or similar.
MORE DETAILED DESCRIPTION
In the following description, adjectives such as -"vertical" or "horizontal" are sometimes used. It should nevertheless be observed that such ad~ectives are used merely for linguistic convenience and that they are not limiting in any way. Thus, the adjective "vertical"
3b should be understood as meaning "parallel to the lateral edges of the curtain", and the adjective "horizontal"
should be understood as meaning "perpendicular to the -lateral edges of the curtain".
With reference to Figure 1, the door of the 35 invention has two lateral uprights 1 and 2 on either side of a door-bay 5 that is open in a wall 9 of a building.
Each of the lateral uprights 1 and 2 includes a slideway - .~
- - ..., ,. ~ - :. : :
: ~. ' : . ; ~ ' .
209~79~t1.
that forms a constriction 7 in the vicinity of the door- -bay 5, with the constriction 7 delimiting a vertical slot 8. In the particular example shown in Fiyure 1, the vertical lateral uprights are channel-section members, - -e.g. made of metal. Thus, in this example, the constriction of the slideway is constituted by a web wall 7 having two flange walls 10 extending away from the door-bay 5, bu~ providing they have constrictions 7, the uprights 1 and 2 could be of any other configuration without going beyond the scope of the present invention.
The door of Figure 1 also has a raisable curtain 4 which includes lateral edges 4a that slide in the slot 8 of the respective lateral upright. The curtain 4 is flexible, such that when a force is applied to it perpendicularly to its plane, said force gives rise to traction on the lateral edges 4a of said curtain, thereby --tending to extract said lateral edges 4a from the slots 8. In the particular example shown in Figure 1, the ;~
curtain 4 further includes horizontal reinforcing bars 6.
It i9 essential for these bars to be sufficiently flexible to enable the edges 4a to escape from their slots 8 when sufficient force is applied to the curtain 4 ~-~
perpendicularly to its plane, e.g. in the event of a -"-shock from a goods-handling vehicle colliding with the 25 curtain 4. ;
In the particular example shown in Figure 1, the door further includes a cross-member 3 which inter-connects the top ends of the lateral uprights 1 and 2. ~
Such a cross-member 3 could optionally be omitted without ~ ~;
thereby going beyond the scope of the present invention.
! ' The curtain of the door of the present invention may be raisable in several different ways. For example, as -shown in Figure 2, the curtain 4 may be raisable by being ~
wound about a horizontal axis 11 situated at the top of ~ ~ ;
the door. In a variant, as shown in Figure 3, the lateral uprights 1 and 2 of the door may be extended upwardly by slideways 15 and 16 in which the lateral - -:, . ..
. - ,, ~" ..~ ,', .' . ,.` ' . ,' . ', -2()97991.
edges 4a of the curtain 4 can slide. Under suchcircumstances, the curtain 4 is raised without being wound, merely by sliding along the slideways 15 and 16.
The curtain 4 may be actuated by mechanical or electromechanical means that are well known in the art.
As shown in Figure 4, each lateral edge 4a of the curtain 4 of the door of the present invention may include two sheets of resilient material 20 and 21 which extend continuously up the entire height of the lateral edge 4a, on respective sides of the plane of the curtain.
Each of the sheets 20 and 21 is secured to the lateral edge 4a of the curtain and extends from said lateral edge 4a in a direction that is not parallel to the plane of the curtain 4. The lateral edge 4a of the curtain thus has a Y-shaped or T-shaped section.
As shown in Figure 7, the flexible sheets 20 and 21 may each include a respective portion 20a or 21a that is parallel to the plane of the curtain, and a respective portion 20b or 21b that is bent out from the plane of the curtain. In the example shown in Figure 7, each portion 20a, 21a parallel to the plane of the curtain is at an angle of substantially 90 to the c~orresponding outwardly-directed portion 20b, 21b. However, the angle may be other than 90 providing it is not as much as 180. Each portion 20a, 21a parallel to the plane of the curtain is fixed to the curtain by any conventional means, e.g. by sewing, welding, gluing, hot pressing, etc.
In a variant, as shown in Figure 8, the sheets 20 and 21 may be secured to each other in the vicinity of the junction 22 between their portions parallel to the curtain and their outwardly-directed portions.
Optionally, the sheets 20 and 21 may thus be formed as a single piece.
As shown in Figure 5, the outwardly-directed portions 20b and 21b of each flexible sheet 20 and 21 may include horizontal slits 23 spaced apart up the height of ~:
~:
- 20979~1.
the lateral edge 4a of the curtain. This makes it easier to deform the curtain 4 out from its own plane, e.g. when the curtain 4 is being wound up because it is being raised. As shown in Figure 6, the curtain 4 is then wound on a rotary roller 24 about an axis 11. It may be advantageous for the axial extent of the roller 24 to be equal to or slightly less than the width of the curtain 4 itself, such that the outwardly-directed portions 20b and 21b of the flexible sheets 20 and 21 wind up beyond the axial ends 25 of said roller 24. This prevents the outwardly-directed portions 20b and 21b giving rise to local excess thickness while the curtain is being wound up.
Figure 9 shows the disposition of the lateral edge 15 4a of Figure 7 when it is inserted in a slideway ~;
constituted by a constriction 7 of a lateral upright 1. -So long as the curtain 4 is not being subjected to any force perpendicularly to its own plane, its lateral edge 4a is not subjected to any traction force towards the 20 inside of the door-bay 5. In the example shown in Figure ~ ;
9, the outwardly-directed portions 20b and 21b of the flexible sheets 20 and 21 are deformed a little away from the door-bay 5 so that their respective free edges 20c and 21c are in resilient contact with the constriction 7 of the upright. In this way, said sheets 20 and 21 provide sealed contact between the curtain 4 and the lateral uprights 1 and 2 without the friction between the constriction 7 and said sheets 20 or 21 becoming large.
While the curtain 4 is being raised, said sheets 20 and 21 rub against the constriction 7 via their free ends 20c and 21c only, such that the friction area is limited.
It would optionally be possible to provide for the - -~
flexible sheets 20 and 21 to be completely out of touch with the constriction 7 providing the curtain 4 is not 35 being sub~ected to any force. As shown in Figure 10, as -soon as an air pressure difference comes into existence between the two faces of the curtain 4, e.g. because of . ,, ., ., ., ,- , ~ ~ ." . . ..
~ 2099'~991.
the wind, or because premises are being kept under raised pressure or under reduced pressure, the curtain 4 is subjected to a traction force directed to-~ards the inside of the door-bay 5. As a result, the flexible sheets 20 and 21 are pulled by the curtain 4 into the door-bay 5 such that their outwardly~directed portions 20b and 21b bear in sealed manner against the constriction 7 of each upright 1, 2. The door of the invention thus ensures that practically no significant flow of air can take 10 place through the door-bay 5 when the curtain 4 is down. -When an air pressure difference exists between the two faces of the curtain 4, the flexible sheets 20 and 21 bear against the constriction 7 with considerable resilient force, and the contact area between the flexible sheets and the constriction 7 may well be increased. As a result, friction between said flexible sheets 20, 21 and the constriction 7 also increases.
However, it will be observed that when the curtain is raised, the pressure between the two faces tends to equalize because of the air that can escape beneath the curtain. The curtain therefore tends to return to the shape shown in Figure 9 in which friction between the constriction 7 and the flexible sheets 20, 21 is reduced or even eliminated. This ensures that the energy consumed while moving the curtain 4 is limited.
8ecause of the flexibility of the sheets 20 and 21, in the event of the curtain 4 receiving a shock of sufficient strength, the outwardly-directed portions 20b and 21b of said sheets tend to line up with the curtain 4, as shown in Figure 11, thereby enabling the lateral edge 4a of the curtain to escape from the constriction 7.
This prevents the curtain itself being damaged.
In addition, if a portion of a lateral edge 4a of the curtain 4 is not fully extracted from the slot 8 delimited by the constriction 7, said lateral edge 4a does not remain jammed in the slot 8. The total thickness of the flexible sheets 20, 21 is-less than the ~097g91.
. '-width of the slot 8. Thus, if a portion of a lateral edge 4a of the curtain 4 remains in the slot 8, that does not prevent the curtain 4 from being raised. It is therefore certain that the door will not be jammed in its closed position after a shock, which would be extremely inconvenient in running an industrial installation.
As shown in Figure 16, the outwardly-directed portions 20b and 21b of the flexible sheets 20 and 21 may include ribs 27 extending parallel to the lateral edge 4a --of the curtain. These ribs 27 are directed towards the constriction 7 of the lateral upright and are suitable for bearing resiliently in sealed manner against said constriction 7. Thus, the ribs 27 put a limit on the contact area between the constriction 7 and the flexible sheets 20 and 21, thereby putting a limit on the friction between the constriction 7 and said flexible sheets 20 and 21 while the curtain 4 is sliding. ;~
As shown in Figure 17, the constriction 7 of each upright 1, 2 may optionally include ribs 28 extending parallel to the lateral edge 4a of said curtain and extending towards the sheets 20 and 21 of said lateral edge 4a, on either side of the plane of the curtain 4. ;
These ribs 28 also have the effect of limiting friction between the constriction 7 and said sheets 20 and 21 while the curtain 4 is sliding. In addition, it is advantageously possible to provide said ribs 28 on the constriction 7 and said ribs 27 on the flexible sheets 20 and 21. This increases the traction force that needs to be applied to the curtain 4 in order to extract the lateral edges 4a o~ said curtain from the constrictions 7. The ribs 28 of the constriction 7 may be integrally formed with said constriction 7, as shown in Figure 17, or else, as shown in Figure 18, the ribs 28 may be gaskets made of elastomer or of some other flexible material and applied to the constriction 7.
As shown in Figure 19, it may be advantageous for the outwardly-directed portions 20b and 21b to include- -:,:,., ~;
~` 209'799~
wheels in the vicinity of their respective free edges 20cand 21c and adapted to run vertically along the constriction 7, while keeping a gap between the constriction 7 and said outwardly-directed portions 20b and 21b so long as no traction force is being applied to the curtain 4. In such a configuration, there is no sealing contact between the constriction 7 of each lateral upright of the door and the flexible sheets 20 and 21. The wheels 29 serve to eliminate substantially all friction between the constriction 7 of each lateral upright of the door and the flexible shee-ts 20 and 21, thereby achieving considerable energy saving. As shown in Figure 20, as soon as an ambient pressure difference occurs between the two faces of the curtain, such as could entrain a flow of air round the sides of said curtain, said pressure difference causes the curtain to deform, thereby applying a traction force on the curtain 4 towards the inside of the door-bay 5. As a result, the flexible sheets 20 and 21 are displaced towards the inside of the door-bay 5 such that the outwardly-directed portions 20b and 21b of said flexible sheets 20 and 21 come into sealing contact with the constriction 7 along the edges of the slot 8. Air therefore never flows between the lateral edges of the curtain 4 and the uprights 1, 2.
As shown in Figure 21, in a variant, wheels 29' could be disposed on the constriction 7 instead of being disposed on the outwardly-directed portions 20b and 21b of said flexible sheets 20 and 21.
In another variant, as shown in Figure 15, the wheels 29'can be replaced by skids 30 which may be disposed on the outwardly-directed portions 20b and 21b of the flexible sheets 20 and 21 in the vicinity of their respective free ends 20c and 21c. In a variant, the skids 30 may be disposed on the constriction 7, like the wheels of Figure 21.
209~7991.
, As shown in Figure 12, instead of including two ;~
resilient flexible sheets 20 and 21 disposed on either side of the plane of the curtain 4, the lateral edge 4a of the curtain may be fixed to a single resilient flexible sheet 26 looped in the form of a bead that extends longitudinally up the lateral edge 4a of the curtain. The flexible sheet 26 has two ends 26a and 26b ~ ~
which are fixed to the lateral edge 4a of the curtain, by -any conventional means. In the vicinity of the edge of the curtain 4, the flexible sheet 26 moves out from the plane of the curtain 4 to opposite sides of said plane so that the lateral edge 4a of the curtain locally presents ;~ ;
a Y-shaped section, as described above. The curtain 4 ~ ~ ;
shown in Figure 12 thus behaves in exactly the same manner as the curtain described before, and may have the same variants applied thereto. -As shown in Figures 13 and 14, when the curtain 4 includes horizontal reinforcing bars 6 that slide in the lateral uprights 1 and 2, said bars are generally engaged in sheaths formed in the curtain 4. As a result, it may be difficult to fix the resilient flexible sheets as described above to the lateral edge of the curtain 4 in the vicinit~ of the bars 6. For example; if the fixing -is done by sewing or by hot-pressing, then it runs the risk o locally obstructing the sheaths for receiving the bars 6. To avoid this drawback, it is possible to use the solution shown in Figure 13. The lateral edge 4a of the curtain includes a single flexible sheet 26 that is looped and has both edges 26a fixed to the edges of the curtain 4. The sheet 26 extends along the entire height of the lateral edge 4a of the curtain, but it is -interrupted level with each horizontal bar 6. In order to avoid loosing sealing at the end of each horizontal bar 6, each end 6a of each bar 6 is engaged in a sealing member 31, one of which can be seen in Figure 14. Each sealing member 31 has a front portion 32 adapted to be engaged on the end 6a of the bar 6, and a rear portion 33 ' :" ~ , ,, '-....
209'7991.
which may include two resilient flexible sheets 34 and 35 that extend from the front portion 32 outwardly from the curtain 4, and diverging on either side of the plane of the curtain 4. The rear portion 33 is adapted to bear in sealed manner against the constriction 7 of the slideway in which the lateral edge 4a of the curtain slides.
Instead of including two flexible sheets 34 and 35, the rear portion 33 could include a single flexible sheet that is looped back and has both ends fixed to the front portion 32. In the example shown in Figure 14, the front portion 32 of the sealing member 31 includes two resilient sheets 35 and 36 that are connected together at a rear end 37 and that are adapted to engage on the horizontal bars 6 of the curtain 4 starting from the lateral edge 4a of the curtain, clamping resiliently onto said bars 6 and onto said curtain 4.
Claims (12)
1/ A raisable flexible curtain door for closing a door-bay, the door including two lateral uprights each having a slideway that forms a constriction, the curtain substantially forming a plane and having lateral edges that slide in respective ones of said constrictions and that are provided with relief projecting out from the plane of the curtain, said relief being disposed substantially continuously along the lateral edges of the curtain and being adapted to bear in substantially sealed manner against the constrictions of the slideways at least while the curtain is being subjected to a traction force directed towards the inside of the door-bay, said relief being sufficiently flexible to be able to pass through said constrictions when said traction force exceeds a determined value, wherein said relief is constituted by a resilient flexible material in sheet form secured to the lateral edges of the curtain, and said sheet material extends outwardly from each lateral edge of the curtain on either side of the plane of the curtain, in such a manner that said sheet material is capable of flattening elastically substantially into the plane of the curtain while said relief is passing through said constrictions.
2/ A door according to claim 1, in which said sheet material on each lateral edge of the curtain is constituted by two lateral sheets each secured to said lateral edge of the curtain, and each extending to one side of the plane of the curtain diverging from the lateral edge of the curtain.
3/ A door according to claim 1, in which said sheet material on each lateral edge of the curtain is constituted by a single sheet formed into a loop, constituting a hollow bead secured to the lateral edge of the curtain.
4/ A door according to claim 1, in which said sheet material extends continuously along each lateral edge of the curtain.
5/ A door according to claim 1, in which said sheet material includes horizontal cutouts to facilitate deformation of the curtain out from its own plane, e.g.
while being wound around an axis during raising of the curtain.
while being wound around an axis during raising of the curtain.
6/ A door according to claim 1, in which said constriction of the slideway of each upright includes ribs directed towards said sheet material and extending continuously parallel to the lateral edge of the curtain, which ribs are adapted to bear with substantially sealing contact against said sheet material, at least while the curtain is being subjected to traction force directed towards the inside of the door-bay.
7/ A door according to claim 1, in which said sheet material on each lateral edge of the curtain includes ribs directed towards the constriction of the corresponding upright slideway, which ribs extend continuously parallel to said lateral edge of the curtain and are adapted to bear in sealed manner against said corresponding constriction, at least while the curtain is being subjected to traction force directed towards the inside of the door-bay.
8/ A door according to claim 1, in which said sheet material on each lateral edge of the curtain includes relief facing the constriction of the corresponding upright slideway, and said slideways include relief against which said relief on the sheet material comes to bear while the curtain is being subjected to a traction force towards the inside of the door-bay.
9/ A door according to claim 1, in which said constriction of the slideway in each upright includes skids disposed at a certain distance on either side of the plane of the curtain facing the sheet material.
10/ A door according to claim 1, in which said constriction of the slideway in each upright includes rolling means disposed at a certain distance on either side of the plane of the curtain and facing the sheet material.
11/ A door according to claim 1, in which said sheet material includes skids disposed at a certain distance on either side of the plane of the curtain facing the constriction of the slideway in the corresponding lateral upright.
12/ A door according to claim 1, in which said sheet material includes rolling means disposed at a certain distance on either side of the plane of the curtain facing the constriction of the slideway of the corresponding lateral upright.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9113682A FR2683258A1 (en) | 1991-11-06 | 1991-11-06 | Warehouse door with roll-up shutter providing improved lateral sealing |
| EP93401176A EP0623731A1 (en) | 1991-11-06 | 1993-05-07 | Overhead industrial door with improved lateral sealing |
| CA002097991A CA2097991A1 (en) | 1991-11-06 | 1993-06-08 | Raisable-curtain goods-handling door with improved lateral sealing |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9113682A FR2683258A1 (en) | 1991-11-06 | 1991-11-06 | Warehouse door with roll-up shutter providing improved lateral sealing |
| EP93401176A EP0623731A1 (en) | 1991-11-06 | 1993-05-07 | Overhead industrial door with improved lateral sealing |
| CA002097991A CA2097991A1 (en) | 1991-11-06 | 1993-06-08 | Raisable-curtain goods-handling door with improved lateral sealing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2097991A1 true CA2097991A1 (en) | 1994-12-09 |
Family
ID=27169464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002097991A Abandoned CA2097991A1 (en) | 1991-11-06 | 1993-06-08 | Raisable-curtain goods-handling door with improved lateral sealing |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0623731A1 (en) |
| CA (1) | CA2097991A1 (en) |
| FR (1) | FR2683258A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE1008321A3 (en) * | 1994-04-29 | 1996-04-02 | Dynaco International Sa | Roller blind closure device |
| DE69530923T2 (en) * | 1994-04-29 | 2004-05-19 | Dynaco International | LOCKING DEVICE WITH FLEXIBLE UMBRELLA |
| FR2728011B1 (en) * | 1994-12-12 | 1997-01-24 | Mavil | IMPROVEMENTS IN HANDLING DOOR APRON |
| EP1191184A1 (en) * | 2000-09-25 | 2002-03-27 | Dynaco International | Shutter device for closing an opening |
| FR2863646B1 (en) | 2003-12-11 | 2006-02-24 | Nergeco Sa | IMPROVED CURTAIN DOOR BY ROLLER WITH IMPROVED SIDE SEAL |
| US7748431B2 (en) | 2006-06-05 | 2010-07-06 | Rite-Hite Holding Corporation | Track and guide system for a door |
| US8037921B2 (en) | 2006-06-05 | 2011-10-18 | Rite-Hite Holding Corporation | Track and guide system for a door |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1545508A (en) * | 1976-11-11 | 1979-05-10 | Precision Blinds Ltd | Roller blinds |
| FI810010L (en) * | 1980-01-15 | 1981-07-16 | Glenn Robert Palmer | DOERRKONSTRUKTION |
| US4601320A (en) * | 1984-02-09 | 1986-07-22 | Douglas Taylor | Industrial door |
| GB8624735D0 (en) * | 1986-10-15 | 1986-11-19 | Clark Door Ltd | Roller door assemblies |
| US5176194A (en) * | 1989-08-08 | 1993-01-05 | Metaco Co., Ltd. | Roller screen unit |
| US5117892A (en) * | 1990-06-22 | 1992-06-02 | Murray Alan C | Window shade track construction |
| NL9001495A (en) * | 1990-06-29 | 1992-01-16 | Hct Engineering B V | Window roller blind arrangement - has drum ends of smaller dia., then drum centre section |
-
1991
- 1991-11-06 FR FR9113682A patent/FR2683258A1/en not_active Withdrawn
-
1993
- 1993-05-07 EP EP93401176A patent/EP0623731A1/en not_active Withdrawn
- 1993-06-08 CA CA002097991A patent/CA2097991A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| FR2683258A1 (en) | 1993-05-07 |
| EP0623731A1 (en) | 1994-11-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |