GB2446864A - Awning with drain - Google Patents

Awning with drain Download PDF

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Publication number
GB2446864A
GB2446864A GB0703287A GB0703287A GB2446864A GB 2446864 A GB2446864 A GB 2446864A GB 0703287 A GB0703287 A GB 0703287A GB 0703287 A GB0703287 A GB 0703287A GB 2446864 A GB2446864 A GB 2446864A
Authority
GB
United Kingdom
Prior art keywords
awning
screen
water
permeable
gutter
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.)
Withdrawn
Application number
GB0703287A
Other versions
GB0703287D0 (en
Inventor
Daniel Cutler
Dvir Brand
Original Assignee
Daniel Cutler
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Daniel Cutler filed Critical Daniel Cutler
Priority to GB0703287A priority Critical patent/GB2446864A/en
Publication of GB0703287D0 publication Critical patent/GB0703287D0/en
Publication of GB2446864A publication Critical patent/GB2446864A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F10/00Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins
    • E04F10/02Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F10/00Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins
    • E04F10/02Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins
    • E04F10/06Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H15/00Tents or canopies, in general
    • E04H15/32Parts, components, construction details, accessories, interior equipment, specially adapted for tents, e.g. guy-line equipment, skirts, thresholds
    • E04H15/58Closures; Awnings; Sunshades
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F10/00Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins
    • E04F10/02Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins
    • E04F10/06Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building
    • E04F10/0644Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building with mechanisms for unrolling or balancing the blind
    • E04F10/0655Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building with mechanisms for unrolling or balancing the blind acting on the movable end, e.g. front bar
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F10/00Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins
    • E04F10/02Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins
    • E04F10/06Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building
    • E04F10/0666Accessories
    • E04F10/0681Support posts for the movable end of the blind

Abstract

An awning 1 comprising a screen 2 for covering an outdoor area, the screen comprising a water permeable portion 3 for draining water through the screen. The water permeable portion may be proximate to a front edge of the screen and may preferably be a longitudinal strip centrally located in a transverse direction. This strip may extend at least half the longitudinal length of the screen or more preferably the whole length of the screen. The water permeable portion may be a net capable of withstanding a lateral tension at least as great as the rest of the awning fabric. The awning may further comprise a gutter 11 attached to the underside of the screen beneath the water permeable portion in order to conduct water towards the edge of the screen. The gutter may separate progressively from the underside of the screen towards its outlet end and the outlet may be rearwards of the leading edge of the screen. The awning may be an extendable awning and comprise a plurality of water permeable portions. The extendable awning may comprise a plurality of longitudinal members which may be flexible, wherein the leading edge of the screen is supported by said longitudinal members.

Description

Awning with drain The invention concerns a canopy or awning having a
drain for draining water from the surface of the canopy or awning and preventing water from pooling on the surface of the canopy or awning.
Various types of known canopies and awnings are used for covering outdoor spaces so as to shield those spaces from the rain and/or sun. Typical uses involve covering public outdoor seating areas at cafés and restaurants or areas of pavement outside the front of shops and also private outdoor areas such as patios, gardens and balconies.
The canopy or awning can be made from a rigid material such as plastic or it can be made from a sheet of flexible material such as various fabrics. Flexible sheets are particularly used for extendable awnings which can be rolled or folded away when not in use.
As mentioned above, one purpose of a canopy or awning can be to protect the outdoor area from rain. In the case of awnings made from flexible sheets, a problem arises in that rain water can collect on the sheet and form a pool which creates a local dip in the flexible sheet and thereby collects more rain water. When these pools get larger, they get significantly heavier and it is possible that the fabric or the structure of the awning can be damaged by this extra weight. It is therefore desirable to prevent such pools from forming or to provide some means for emptying them.
The most straightforward approach which is adopted is to angle the awning sheet such that water falling upon it tends to run down the slope of the sheet under the influence of gravity and thereby drains off the end of the sheet. The effectiveness of this approach depends on the angle of the slope and the tension (both lateral and longitudinal) in the fabric. Research has shown that a slope of at least 14 is required for effective water runoff.
Another factor which can increase the likelihood of pool formation is that many awnings, particularly extendable awnings where the fabric is stored on a roll when the awning is retracted and is unrolled when the awning is deployed, have a rigid bar at the leading edge of the sheet for providing support in the transverse direction of the sheet. This bar is normally the lowest edge of the canopy, i.e. in the downstream direction of any rainwater runoff. Therefore if there is insufficient tension in the sheet of the canopy, the fabric will normally sag a little behind the bar, creating a trough in which the water will naturally collect.
If pools of water do form on the sheet, the easiest way to empty them is to push the sheet from underneath in the region of the pool so that the sheet becomes locally raised in the region of the pool causing the water to cascade off the side or end of the awning.
In the case of most small awnings (e.g. up to about four metres in length) the tension in the screen can easily be maintained at a level where the water will not collect into pools. However, when the length of the awning is increased, the greater span and the greater weight of fabric makes it difficult to maintain the tension at a sufficient level and water pooling becomes more of a problem. Additionally, with smaller awnings, the angle of the sheet to the horizontal can be greater without the leading edge of the screen getting too low. However, with larger awnings, in order to maintain the leading edge of the screen at a sufficient height above the ground, the downward angle of the sheet must necessarily be kept shallower which reduces the awning's ability to shed water.
EP1174565 describes an awning with a mechanism for automatically lowering one lateral side of the awning by shortening the effective length of one of the supporting arms when a predetermined weight of water has collected on top of the sheet. One disadvantage of this system is that the mechanism is quite complex which adds to the costs of production and maintenance. Another disadvantage is that the mechanism is triggered at a threshold weight, but as soon as some of the pooled water has been shed, the weight threshold is crossed back again, so the system will not reliable drain all of the pooled water from the sheet. Rather, it merely prevents the size of the pool from getting large enough to cause damage. The system also results in unpredictable cascades of water off the side of the canopy which could soak an unlucky person entering or exiting the cover of the awning.
The Markilux skylife awning can be transformed from a standard arrangement to a gable-shaped arrangement in which the front bar of the canopy is deformed so that the centre thereof is higher than the ends thereof, thus directing rain towards the front corners of the awning sheet. However, this arrangement again is rather complex and is costly to produce and repair. The transformation to a gable-shaped arrangement is required to be done manually, before the accumulation of rainwater. It is also impractical for larger awnings where significant tension needs to be imparted to the screen in order to prevent sagging of the awning.
According to the present invention, there is provided an awning comprising a screen for covering an outdoor area, the screen comprising a water permeable portion for draining water through the screen.
In order to create tension and stability in the awning surface, the screen is typically supported by rigid members at the front and back of the awning and in some cases along the sides of the awning. The fabric of the awning tends to sag in between these members and it is most difficult for water to drain over such obstacles.
Pools of water therefore tend to accumulate behind or next to such rigid members. By providing a water permeable portion in the awning screen, water can be drained through the canopy from a point within the sagging portion of the fabric, i.e. within the framework of rigid members which supports the awning. Thus regions of the canopy which are at risk of collecting water can be effectively drained and pooling can be prevented.
As mentioned above, larger awnings naturally suffer a great deal more from sagging of the fabric and therefore it is much more difficult to prevent pooling of water on the awning surface. In particular, awnings with greater span (both transverse span and longitudinal span) have a greater need for support at the sides in the form of rails or cables. These rails or cables provide a barrier to water runoff in the lateral direction.
Further, in the case of motorised extendable awnings, the front bar at the leading edge of the screen can be quite large to accommodate the motors and can therefore provide a barrier to water runoff in the forward direction, resulting in water pooling on the screen just behind it.
Therefore, preferably the permeable portion is located proximate to a front edge of the screen so as to drain the area immediately behind the front edge. With an angled awning, this will typically be the lowest point on the awning surface and therefore the most likely place for water to collect.
In general, awning structures are substantially symmetrical about the central longitudinal axis and therefore, the lowest point in the sagging portion of the awning screen will tend to be in the middle, equidistant from the side edges. Therefore, preferably the permeable portion is centrally located in a transverse direction.
In some cases, particularly in the case of an extendable awning which may be deployed fully or only partially, it can be difficult to ascertain in advance the best location for providing a drain in the screen. The tension in the screen may vary with the extent of deployment and therefore the region of greatest sag in the screen may also vary with the extent of deployment.
Therefore preferably, the permeable portion is formed as a longitudinal strip. Such a longitudinal strip is capable of draining a greater area of the screen which could potentially hold water.
As discussed above, awnings tend to be angled down from the horizontal, with the angle varying depending on size and application. If the awnings are not angled to rise above the horizontal then the lowest point in the screen cannot be further back than half way in the longitudinal direction. Therefore in order to minimise the area of the awning which is permeable, one embodiment of the invention preferably has a permeable strip which extends about half the longitudinal length of the screen. The strip preferably extends backwardly from the leading (front) edge of the screen.
In an alternative preferred embodiment, the permeable strip extends substantially the whole length of the screen. Although this increases the permeable area of the screen, it increases the symmetry of the screen so that when the awning is assembled, it does not matter in which direction the screen is rolled up onto the roller.
Thus the manufacturing of the awning is simplified.
It is important, particularly in larger awnings that the tension in the screen can be maintained so as to reduce the sag in the screen. Therefore, it is preferred that the permeable portion is capable of withstanding a tension at least as great as the rest of the awning fabric. In the case that the permeable portion is formed as a longitudinal strip, any weakness in the fabric of the permeable portion could significantly reduce the maximum lateral tension which can be applied to the awning screen. It is therefore preferred that the permeable portion is capable of withstanding thistension in the lateral direction.
0 Although it would be possible to form the permeable portion as a simple hole and to reinforce it with tension straps across the hole, in a. preferred embodiment, the permeable portion comprises a mesh or alternatively a net.
The above described arrangements assist in draining water from the canopy and thus preventing pooling of water and the resulting sag of the screen and potential damage to the awning screen or structure. Although water is drained through the screen and thus falls into the area which is being covered by the awning, it is drained into predictable regions of that covered area, such as the region near to the front bar of the awning, and therefore it still allows the use of the remainder of the covered area to shelter from the rain.
However, in more preferred embodiments the awning further comprising a gutter attached to the underside of the screen underneath the permeable portion for conducting water towards an edge of the screen. Most preferably the gutter conducts water to the leading edge at the front of the screen as this will normally be the direction of slope of the awning screen and therefore provides the quickest and most direct route for channelling water off the screen. In this way, water can be drained from the upper surface of the awning screen and channelled underneath the supports at the sides or end of the awning where it can be expelled through the open end of the gutter.
In the case of sloping awnings, gravity will cause the water to run down the gutter to its outlet end where it is expelled. However, where the awning is substantially flat or at a low angle to the horizontal, the rate of expulsion of surface water can be increased by providing a gutter which separates progressively further from the underside of the screen in the direction towards its outlet end. In this way, the channel down which water flows can be at a greater angle to the horizontal than the angle of the main awning surface. Thereby the water accelerates out of the awning faster and water is drained from the awning surface at a greater rate.
Although the gutter may extend the full length of the awning up to the leading edge of the screen, this may result in the expelled water colliding with the front bar of the awning, creating unwanted splashing. Preferably therefore the outlet end of the gutter is rearward of the leading edge of the screen. By terminating the gutter slightly back from the front bar, the water can fall clear of the front bar.
If the awning comprises further supporting members, for example further longitudinal supports to allow for an extended lateral span, the awning may have more than one region in which water is liable to pooi. Therefore the awning screen may comprise a plurality of permeable portions with each permeable portion located so as to drain a particular area of the screen. Each such permeable portion may be arranged in any of the ways described above and a plurality of gutters may be arranged underneath them to channel the water away from the awning as described above.
As mentioned above, a particularly preferred awning of the invention is an extendable awning wherein the screen is extendable from a retracted position to an extended position or to any level of deployment in between.
More preferably, the awning of the invention comprises a plurality of longitudinal members which support the leading edge of the screen as it is extended or retracted. These longitudinal members may preferably be flexible. A preferred embodiment of the invention uses flexible cables held under tension as the longitudinal members.
The use of the term "front" in the above description means the leading portion of an extendable awning or the lowest edge of a sloping awning which falls away from a building or other support. If the awning is arranged to rise away from the building/support, it will of course be preferred that the permeable portion is located towards the rear of the awning, i.e. near to the building/support which would then be the lowest point of the awning and therefore the place where water would tend to pool.
Preferred embodiments of the invention will now be described, by way of example only and with reference to the accompanying drawings in which: Figure 1 shows a first embodiment of an awning according to the invention viewed from underneath; Figure 2 shows a perspective view of the first embodiment of the invention; and Figure 3 shows a front view of a second embodiment of the invention.
Figures 1 and 2 show an awning 1 having a screen 2 made from water impermeable material with a water permeable net 3 which extends along the longitudinal length of the screen 2. The net 3 is located centrally in the transverse direction of the screen 2.
The awning 1 in figures 1 and 2 is an extendable awning which can be extended or retracted to any level of deployment. When not in use, the screen 2 is stored on storage roller 10. The awning 1 is supported by longitudinal flexible cables 4 which extend between a first support which in this case is a wall 5 and second supports 6. The cables are held under tension so as to support the screen 2 with minimal sag. The awning covers an area of ground 12 next to the wall 5.
Screen 2 has a front bar 7 at i-ts leading edge 8. The screen slopes down at an angle to the horizontal away from the wall 5.
As water is incident on the screen 2 of awning 1, the water runs down the screen under the influence of gravity in the general direction of the slope of the screen 2, i.e. towards the leading edge 8 of the screen 2. Due to the lateral sag of the screen 2, the water also travels generally from the edges 9 towards the central permeable net 3. Upon reaching the net 3, water passes through the net 3 and therefore through the screen 2 and so it does not collect into a pool on top of the screen 2. The net 3 is made from nylon thread and is capable of withstanding a lateral tensile force greater than that of the rest of the awning fabric.
Figure 3 shows a second embodiment of the invention which is similar to the first embodiment (like reference numerals are used for like parts) with the addition of a gutter 11 which is fixed to the underside of the screen 2. The gutter is made from an impermeable material and carries the water which permeates through the net 3 towards the leading edge 8 of the screen 2. The gutter expels the water out from the underside of the screen 2 beneath the front bar 7 at the leading edge 8 of the screen 2.

Claims (17)

  1. Claims: 1. An awning comprising a screen for covering an outdoor area,
    the screen comprising a water permeable portion for draining water through the screen.
  2. 2. An awning as claimed in claim 1, wherein the permeable portion is proximate to a front edge of the screen.
  3. 3. An awning as claimed in claim 1 or 2, wherein the permeable portion is centrally located in a transverse direction.
  4. 4. An awning as claimed in claim 1, 2 or 3, wherein the permeable portion is a longitudinal strip.
  5. 5. An awning as claimed in claim 4, wherein the permeable strip extends at least half the longitudinal length of the screen.
  6. 6. An awning as claimed in claim 5, wherein the permeable strip extends substantially the whole length of the screen.
  7. 7. An awning as claimed in any preceding claim, wherein the permeable portion is a net.
  8. 8. An awning as claimed in any preceding claim, wherein the permeable portion is capable of withstanding a lateral tension at least as great as the rest of the awning fabric.
  9. 9. An awning as claimed in any preceding claim, further comprising a gutter attached to the underside of the screen underneath the permeable portion for conducting water towards an edge of the screen.
  10. 10. An awning as claimed in claim 9, wherein the gutter conducts water to the leading edge of the screen.
  11. 11. An awning as claimed in claim 9 or 10, wherein the gutter separates progressively further from the underside of the screen in the direction towards its outlet end.
  12. 12. An awning as claimed in claim 9, 10 or 11, wherein the outlet end of the gutter is rearward of the leading edge of the screen.
  13. 13. An awning as claimed in any preceding claim, comprising a plurality of permeable portions.
  14. 14. An awning as claimed in any preceding claim, wherein the awning is an extendable awning.
  15. 15. An awning as claimed in claim 14, further comprising a plurality of longitudinal members, wherein the leading edge of the screen is supported by the longitudinal members as the screen is extended or retracted.
  16. 16. An awning as claimed in claim 15, wherein the longitudinal members are flexible.
  17. 17. An awning substantially as hereinbef ore described and with reference to Figures 1 and 2 or Figure 3 of the accompanying drawings.
GB0703287A 2007-02-20 2007-02-20 Awning with drain Withdrawn GB2446864A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0703287A GB2446864A (en) 2007-02-20 2007-02-20 Awning with drain

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0703287A GB2446864A (en) 2007-02-20 2007-02-20 Awning with drain

Publications (2)

Publication Number Publication Date
GB0703287D0 GB0703287D0 (en) 2007-03-28
GB2446864A true GB2446864A (en) 2008-08-27

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Family Applications (1)

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GB0703287A Withdrawn GB2446864A (en) 2007-02-20 2007-02-20 Awning with drain

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016218147B3 (en) * 2016-09-21 2018-01-18 Schmitz-Werke Gmbh + Co Kg Weather awning
IT201700020992A1 (en) * 2017-02-24 2018-08-24 Paolo Berto COVERED CURTAIN FOR EXTERIOR EXTERIOR
EP3421682A1 (en) 2017-06-28 2019-01-02 WAREMA Renkhoff SE Awning with water outlet

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191012979A (en) * 1910-05-28 1911-05-04 Solomon Jones Improvements in or connected with Shop Blinds and the like.
DE2751792A1 (en) * 1977-11-19 1979-05-23 Alten K Loading porch roof sheathing drainage unit - comprises flexible U=shape gutter fastened at edges to perforated roof skin
DE29720312U1 (en) * 1997-11-14 1999-03-18 Herzog Erich Eugen Tent roof
DE202004014799U1 (en) * 2004-09-23 2004-11-18 Schmitz-Werke Gmbh + Co. Kg Wintergarden awning, especially for fitting above sloping glass roof, has fabric which in region of outer end in front of drop section has woven-in water drain openings
US20050211287A1 (en) * 2004-03-24 2005-09-29 Meyer Ted H Canopy cover having a meshed portion
DE202007004760U1 (en) * 2007-03-31 2007-06-14 Pusch Gmbh & Co. Kg Overhanging canopy for fixing to a house wall comprises a rectangular acrylic glass top plate and two holding arms connected to metal bars with a molded ring at each end

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191012979A (en) * 1910-05-28 1911-05-04 Solomon Jones Improvements in or connected with Shop Blinds and the like.
DE2751792A1 (en) * 1977-11-19 1979-05-23 Alten K Loading porch roof sheathing drainage unit - comprises flexible U=shape gutter fastened at edges to perforated roof skin
DE29720312U1 (en) * 1997-11-14 1999-03-18 Herzog Erich Eugen Tent roof
US20050211287A1 (en) * 2004-03-24 2005-09-29 Meyer Ted H Canopy cover having a meshed portion
DE202004014799U1 (en) * 2004-09-23 2004-11-18 Schmitz-Werke Gmbh + Co. Kg Wintergarden awning, especially for fitting above sloping glass roof, has fabric which in region of outer end in front of drop section has woven-in water drain openings
DE202007004760U1 (en) * 2007-03-31 2007-06-14 Pusch Gmbh & Co. Kg Overhanging canopy for fixing to a house wall comprises a rectangular acrylic glass top plate and two holding arms connected to metal bars with a molded ring at each end

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016218147B3 (en) * 2016-09-21 2018-01-18 Schmitz-Werke Gmbh + Co Kg Weather awning
DE102016218147B8 (en) * 2016-09-21 2018-04-12 Schmitz-Werke Gmbh + Co. Kg Weather awning
IT201700020992A1 (en) * 2017-02-24 2018-08-24 Paolo Berto COVERED CURTAIN FOR EXTERIOR EXTERIOR
EP3421682A1 (en) 2017-06-28 2019-01-02 WAREMA Renkhoff SE Awning with water outlet
DE102017114352A1 (en) 2017-06-28 2019-01-03 Warema Renkhoff Se Awning with water drain

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