GB2185099A - Ventilating element for roof sheets - Google Patents
Ventilating element for roof sheets Download PDFInfo
- Publication number
- GB2185099A GB2185099A GB08629011A GB8629011A GB2185099A GB 2185099 A GB2185099 A GB 2185099A GB 08629011 A GB08629011 A GB 08629011A GB 8629011 A GB8629011 A GB 8629011A GB 2185099 A GB2185099 A GB 2185099A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bearing
- ofthe
- aventilating
- grid structure
- element according
- 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.)
- Granted
Links
- 239000000725 suspension Substances 0.000 claims abstract description 14
- 238000009423 ventilation Methods 0.000 claims abstract description 12
- 229920003023 plastic Polymers 0.000 claims abstract description 4
- 239000004033 plastic Substances 0.000 claims abstract description 4
- 210000002105 tongue Anatomy 0.000 claims description 12
- 238000010276 construction Methods 0.000 claims description 2
- 238000005253 cladding Methods 0.000 abstract 1
- 238000001746 injection moulding Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/17—Ventilation of roof coverings not otherwise provided for
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G9/00—Forming or shuttering elements for general use
- E04G9/02—Forming boards or similar elements
- E04G2009/023—Forming boards or similar elements with edge protection
- E04G2009/025—Forming boards or similar elements with edge protection by a flange of the board's frame
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Building Environments (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
A ventilating element for providing a ventilating opening between overlapping roof cladding sheets or sarking consists of a one-piece plastic part and can be attached between two overlapping flexible sarking sheets of a pitched roof. The ventilating element (1) consists of a plane plate (2) with a grid structure, on the webs (4, 5, 6, 7, 8, 9 see Figure 1) of which bearing ribs (10) and/or bearing posts (11, 21) are arranged in order to produce ventilation channels. A suspension tab 12 is formed on the ridge-side longitudinal web (4) of the plate (2) and which extends obliquely under the plate (2). The elements may be stackable for transportation. <IMAGE>
Description
SPECIFICATION
Ventilating and deaerating element for roofs
The invention relates to a ventilating and deaerating element capable of being installed in a pitch roof between two roof sheets laid transversely relative to the fall line so asto overlap one another. When installed the element rests on the lower sheets and supports the overlapping upper sheet clear of the
lower sheet defining between the sheets air ventilation orifices.
Aventilating anddeaerating element of this type is known from German Offenlegungsschrift 3,202,509.
This known ventilating and deaerating element has an arcuate base plate, by means ofthe arcuate smooth outer bearing surfaces of which the ventilating and deaerating element, when in the installed position, rests on the lower sheet. An upper carrier plate, which can be either plane orcurved concavely, is connected to the two outer ends ofthis arcuate base plate. The upper overlapping sheet is supported on the likewise smooth outer surface of this upper carrier plate. A grid approximately in the form of a segment of a circle extends between the upper carrier plate and the lower base plate and serves as a ventilation orifice.This ventilation and deaerating element designed thus is fastened by
means of several separate clips which can be attached firmly to the arcuate base plate and by means ofwhich the element is clamped to the lower sheet. In the known ventilating and deaerating element,the separate clips are connected firmlyto the base plate subsequently in an additional work step. The known ventilating and deaerating elements cannot be stacked in one another, so that they are difficult to store, transport and carry up to the roof.
According to the present invention there is provided a ventilating element of one-piece plastics construction for use in a pitched rooffor separating overlapping roof sheets laid transverselyto thefall line to define airventilation orifices between the sheets, the element comprising a planargrid structure including webs having arranged thereon bearing projections for defining the ventilation orifices, and a suspension tonge provided on a longitudinal web atthe edge ofthe element which, in use is the upper edge located on the same side as the roof ridge, said tongue extending obliquely under the grid structure.
With such a ventilating and deaerating element there is no need to attach fastening elements subsequently, and the ventilating and deaerating element can be formed to allow easy stacking to facilitate storage and make it possible for several to be conveyed, and even carried up to the roof together.
Because of the constructive design, the ventilating and deaerating elements specifically described herein securethese advantages in every respect and in an extremely favourable way and they can be produced by injection moulding at a low outlay in terms of material.
The invention is explained in detail belowwith reference to the exemplary embodiments illustrated
in the drawings, in which:
Figure 1 shows a plan view of a first exemplary
embodiment ofthe ventilating and deaerating
element according to the invention;
Figure2 shows a side view ofthe ventilating and
deaerating element illustrated in Figure 1, in the
direction of the arrow A;
Figure 3 shows a perspective view of part of the ventilating and deaerating element illustrated in
Figures 1 and 2; Figure4showsafurthersideviewofthe ventilating and deaerating element illustrated in
Figure 1, in the direction ofthe arrow B;
Figure 5shows a plan view of several ventilating
and deaerating elements of the type shown in
Figures 1 to 4,which are stacked on top of one
another;;
Figure 6shows a side view of several ventilating
and deaerating elements ofthetype shown in
Figures 1 to 4, which are stacked on top of one another;
Figure 7shows a ventilating and deaerating elementofthetype illustrated in Figures 1 to4inthe installed position in the overlap region oftwo sheets;
Figure 8 shows a perspective view of part of a furtherexemplaryembodimentoftheventilating and deaerating element according to the invention;
Figure 9 shows a section through the ventilating and deaerating element illustrated in Figure 8 along the sectional line IX-IX marked there;;
Figure 10 shows a section through two ventilating and deaerating elements of the type illustrated in
Figures 8 and 9, which are stacked on top of one another;
Figure 11 shows a ventilating and deaerating element ofthetype illustrated in Figures 8 and 9 in the installed position in the overlap region oftwo sheets, together with further parts of a pitched-roof covering.
In the Figures, parts of the ventilating and deaerating elements illustrated which are identical orwhich correspond to one another bearthe same reference symbols.
Aventilating and deaerating element is designated as awhole by "1 ".As can be seen clearly from the overall view of Figures 1 and 2, it consists of a plane plate 2 with a grid structure. In the exemplary embodiments illustrated, this grid structure of the plate 2 arises as a result of a uniform arrangement of equal large-area perforations 3, here of rectangular cross-section, the plate 2 consequently being composed, in terms of its form, of a longitudinal web 4located on the same side asthe ridge,a longitudinal web 5 parallel to this and located on the same side asthe eaves, at leastone longitudinal web 6extending between them and preferablyalso parallel to them, a left-hand outer limiting crossweb 7, a right-hand outer limiting crossweb 8and several crosswebs 9 arranged between the latter. In a preferred embodiment, all the longitudinal webs 4, 5, 6 and all the crosswebs 7,8,9 are perpendicularto one another in the plane of the plate. However, it should be noted, in this respect, that the plate 2 can also perfectly well have a grid structure differing from that illustrated.
In general, bearing ribs 10 and bearing posts 11 are arranged on the webs ofthe plate 2 in orderto produce a ventilation cross-section. Moreover, at least one suspension tongue 12 extending obliquely underthe plate 2 is arranged on the longitudinal web 4 located on the same side asthe ridge, and as is evidentfrom Figures 7 and 11 the ventilating and deaerating element 1 can be suspended by means of this suspension tongue 12 on the outer edge 13 of a sheet 1 4fixed to the roof. For the desired purpose of suspending the ventilating and deaerating element 1, it would suffice per se to have one suspension tongue 12 which, as indicated by a broken line in Figure 1, would then be arranged on the ridge-side longitudinal web 4 in the middle of the longitudinal extension of the latter.However, as shown in Figure 1, in order to guarantee, in addition to the suspension function, a securely positioned fastening oftheventilating and deaerating element 1 on sheet 14, there will be on the ventilating and deaerating element 1 at least two suspension tongue 12 which are each arranged somewhat at a distance from the respective outer limiting crosswebs 7 and 8. It may be expedient for reasons of stability to stiffen each suspension tongue 12 on its underside by means of at least one supporting rib 15 extending longitudinally relativetothe direction of its extension (see Figure 4). Forthe same reason, especially when the thickness ofthe plate 2 is chosen relatively small, it may also prove expedientto stiffen the plate 2 by means of at least one stiffening rib 16 extending along a longitudinai web 4 or 5 or 6.
As can be seen in Figure 4, in the exemplary embodiment illustrated there this stiffening rib 16 is preferably arranged on the underside ofthe longitudinal web 4 located on the same side as the ridge.
There are, in principle, various design possibilities for arranging and constructing the bearing ribs 10 and bearing posts 11 which determinethe ventilation cross-section when the ventilating and deaerating element 1 is in the installed position.
According to one design alternative, in particular as illustrated in Figures 8 to 11, bearing ribs 1 0 and/or bearing posts 11 can be arranged only on thetop side ofthe plate 2. Alternatively, however, as in the exemplary embodiment according to Figures 1 to 6, bearing ribs 10 and/or bearing posts 11,21 can be provided both onthetop side and on the underside ofthe plate 2. Preferably, the bearing ribs 10 and/or bearing posts 11,21 present have have a frusto-conical outer contourwhich tapers starting from the plate 2. This makes production by injection moulding easier. Furthermore, especially in conjunction with thin sheets 14, 17, it is expedient to round the outer ends of all the bearing ribs 10 and bearing posts 11,21 present, as can be seen, for example, from Figures 3 and 4.
In the exemplary embodiments illustrated, there are both bearing ribs 10 and bearing posts 11 onthe plate 2, each bearing rib 10 being straight at its top end or back 18, and thetop end of a bearing post 11 arranged in line with this is in the extension ofthe straight back ofthe bearing rib 10. As a result of this
design of the bearing ribs 10, when the ventilating
and deaerating element 1 is in the installed position a
relatively large carrying bearing surface forthe overlapping upper sheet 17 is obtained along
individual supporting lines (see Figures 7 and 11).
However, an arrangement and design ofthe bearing
ribs 10 exactly like this is not absolutely necessary. If the sheets were resistant to tearing, these bearing
ribs mentioned could also be replaced by several
bearing posts. But in this case, the bearing posts
have to be so nearto one anotherthat pronounced
sagging of the projecting outer portion ofthe
covering sheet and consequently obstruction ofthe ventilation cross-section are prevented.
In the exemplary embodiments illustrated, on the top side ofthe plate 2, a bearing rib 10 with straight back 18 is arranged on each crossweb 7,8,9 extending between the longitudinal web 5 located on the same side as the eaves and the adjacent
longitudinal web 6, and arranged in line with each of these bearing ribs 10 on the longitudinal web 4
located on the same side as the ridge or, as in the exemplary embodiment according to Figures 8to 11, shortly before this on the crossweb 7,8,9 a bearing
post 1 1,thetop end 19 of which is in the extension of the straight back 18 ofthe bearing rib 10.At the same time, in the exemplary embodiment according to
Figures 8 to 1 1,the upper backs 18 of all the bearing ribs 10 and the top ends 19 of all the bearing posts 11 lie in a plane extending parallel to the plane ofthe
plate 2. In contrast to this, another design is chosen in the exemplary embodiment according to Figures 1 to4.There, on the top side ofthe plate 2, although there is a bearing rib 10 with a straight back 18on each crossweb 7,8,9 extending between the longitudinal web 5 located on the same side as the eaves and the adjacent longitudinal web 6, and in line with this there is a bearing post 11 with a top end 19 present at an appropriate height on the longitudinal web 4 located on the same side as the ridge or shortly before this on each of the crosswebs 7, 8, 9, nevertheless here the backs 18 of all the bearing ribs 10 and the top ends 19 of all the bearing posts 11 extend in a plane parallel to the plane ofthe plate 2 in the longitudinal direction and rising slightly from the eaves side to the ridge side in the transverse direction; the latter plane is represented in Figure4 by the plane 20 indicated bya broken line.
In this exemplary embodiment, two bearing posts 21 are additionally arranged on the underside of the plate 2 in the region below each bearing rib 10, these two bearing posts 21 being arranged respectively belowthestarting region andthe end region ofthe particular bearing rib 10. The heightofthe bearing posts arranged on the underside ofthe plate 2 is calculated so that heir bottom ends 22 are in a plane 23 which is represented by a broken line in Figure 4 and which, when the ventilating and deaerating element is in the installed position, corresponds to the bearing surface on the sheet 14. When the ventilating and deaerating element 1 is in the installed position, the above-mentioned plane20 extends essentially parallel to the said plane 23.
The ventilating and deaerating element 1 explained with referenceto Figures 1 to4is stackable, as can be seen from Figures 5 and 6.
There, ten such ventilating and deaerating elements are shown stacked on top of one another, a reference numeral from 1 to 10 being assigned to each individual element in Figure 6. Forclarification,this numbering is also partially indicated in FigureS. As illustrated, any number of ventilating and deaerating elements can be stacked in one another in a parallel arrangement. Such a stack has a relatively small volume, and the individual elements are anchored to one another, sothat a stable stackwhich can be transported.easily is obtained.
In such a stacked form, the craftsman employed forthe laying work will carry an appropriate number of ventilating and deaerating elements 1 uptothe pitched roof. No handling aids are needed to attach one of these ventilating and deaerating elements 1.
The craftsman employed only has to suspend a ventilating and deaerating element 1 on a lower sheet 14 already fixed to the roof and, as is evident from Figure 7, on its upperouteredge 13there by means of the suspension tongue 12. He adopts the same procedureforthe other ventilating and deaerating elements 1. The next sheet 17 isthen attached (see also Figure 7), in such a way that it overlaps the lower sheet 14 with the ventilating and deaerating elements 1 already attached there, to such an extentthat the ventilating and deaerating elements 1 are covered.Atthe same time, the overlapping sheet 17 is supported on the back 18of the bearing ribs 10 and on the top ends 19 ofthe bearing posts 11 of the particularventilating and deaerating element 1 supported on the sheet 14 by means ofthe bearing posts 21.The effective ventilation cross-section between the sheets 14 and 17 overlapping one another at the edge is determined by the distances between the bearing ribs 10 and the bearing posts 11 and 21 in conjunction with the perforations 3 in the plate 2.
The ventilating and deaerating element 1 according to Figures Sto 10 is designed for especially favourable stacking. For this purpose, the bearing ribs 10 and bearing posts 11 arranged on the top side ofthe plate 2 have a relatively pronounced frusto-conical shape. Moreover, blind holes 24 extend from the underside ofthe plate 2 into the bearing ribs 10 and bearing posts 11. The form of these blind holes matches the outer contour ofthe bearing ribs 10 and bearing posts 11,so that, as shown in Figure 10, positive parallel stacking of several identical ventilating and deaerating elements 1 is possible.
This ventilating and deaerating element 1 too can be carried up to the roof by the craftsman employed in appropriate stacked form and in sufficient numbers and can be attached there to an existing lower sheet 14 by appropriate insertion ofthe suspension tongs 12. The operations required are the same as when a ventilating and deaerating element according to Figures 1 to 4 is attached. In this case, however, the underside of the plate 2 ofthe ventilating and deaerating element rests directly on the top side ofthe sheet 14, whilst the overlapping sheet 17 is supported on the backs 18 ofthe bearing ribs 10 and on the top ends 19 of the posts 11. In this case, the ventilation cross-section is determined by the heightofthe bearing ribs 10 and bearing posts 11 in conjunction with the two sheets 14 and 17.
Practical trials have shown that it is sufficient merely to suspend a ventilating and deaerating element 1 according to the invention by means ofthe suspension tongues 12, since, on the one hand, the installed ventilating and deaerating element 1 is maintained underthe effect of gravity and, on the other hand, is held in its installed position bythe overlapping covering sheet 17.
Regardless of the particular embodiment, the ventilating and deaerating element 1 can be produced simply and economically by plastic injection moulding. After production, it can be stacked in relatively large quantities in a space-saving way and because ofthis is also easy to handle during storage and transport.
Claims (16)
1. Aventilating elementofone-piece plastics construction for use in a pitched roofforseparating overlapping roof sheets laid transversely to the fall line to define air ventilation orifices between the sheets, the element comprising a planar grid structure including webs having arranged thereon bearing projections for defining the ventilation orifices, and a suspension tongue provided on a longitudinal web at the edge ofthe element which, in use is the upper edge located on the same side as the roof ridge, said tongue extending obliquely under the grid structure.
2. Aventilating element according to Claim 1, wherein the bearing projections are arranged only on the upperside of the grid structure.
3. Aventilating element according to Claim 1, wherein the bearing projections are arranged both onthe upperside and on the underside ofthe grid structure.
4. Aventilating element according to Claims 1,2 or 3, wherein the bearing projections comprise bearing ribs andior bearing posts which taper frustoconically in the direction away from the grid structure.
5. A ventilating element according to any one of
Claims 1 to 4, wherein the free ends ofthe bearing projections are rounded.
6. Aventilating element according to any one of
Claims 1 to 5, wherein the grid structure has large-area perforations and webs delimiting the latter and including said longitudinal web located in use, on the same side as the ridge, a second longitudinal web parallel to said first longitudinal web and located on the opposite edge ofthe element, at least one intermediate longitudinal web extending between the first and second longitudinal webs and preferably parallel to them, a left-hand outer limiting crossweb, a right-hand outer limiting crossweb, and several crosswebs arranged between said outer crosswebs, the longitudinal webs and crosswebs preferably being perpendicularto one another in the plane ofthe grid structure.
7. Aventilating elementaccording to Claim 6, wherein on the upper side ofthe grid structure a bearing rib with a straight upper edge is formed on each crossweb extending between the second longitudinal web the longitudinal web adjacent thereto, and arranged in line with each of said bearing ribs on thefirst longitudinal web oradjacent thereto on the crossweb is a bearing post having the end thereof coinciding with the extension of the straight back ofthe respective bearing rib.
8. Aventilating element according to Claim 7, wherein at least one bearing post ore bearing rib is arranged on the underside of the grid structure in the region below each said bearing rib on the upper side thereof:
9. Aventilating element according to Claim 8, wherein a bearing post is arranged on the underside of the grid structure below each bearing rib in the region of the ends thereof.
10. Aventilating element according to any one of
Claims 6 to 9, wherein at least one stiffening rib extends along a longitudinal web.
11. Aventilating and deaerating element according to any one of Claims 6to 10, wherein there are two suspension tongues positioned adjacent the respective outer limiting crosswebs.
12. Aventilating element according to anyone of
Claims 1 to 11, wherein the or each suspension tongue is stiffened on the underside thereof by at least one supporting rib.
13. Aventilating element according to any one of Claims 1 to 12,wherein thetops ofthe bearing projections on the upper side ofthe grid structure lie in a plane parallel to the plane ofthe grid structure.
14. Aventilating element according to any one of Claims 3 to 12, wherein the tops of all the bearing projections on the upper side ofthe plate lie in a plane parallel to the plane ofthe grid structure in the longitudinal direction, and inclined upwardlythereto the transverse direction from the eaves side to the ridge side ofthe element, the bearing projections on the underside ofthe plate being so dimensioned that, when the element is installed position, said
plane ofthe bearing projection tops is substantially
parallel tothe plane ofthesurface on whichthe element rests.
15. Aventilating elementaccording to Claim 2, wherein blind holes extend from the underside ofthe grid structure into the bearing projections on the uppersideofthe grid structure and in shape match the outer contour ofthe bearing projections, thereby to allow positive parallel stacking of several identical ventilating elements.
16. Aventilating elementsubstantially as herein described with reference to the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19853543005 DE3543005A1 (en) | 1985-12-05 | 1985-12-05 | VENTILATION ELEMENT FOR ROOF TENSION VENTILATION |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8629011D0 GB8629011D0 (en) | 1987-01-14 |
| GB2185099A true GB2185099A (en) | 1987-07-08 |
| GB2185099B GB2185099B (en) | 1989-10-25 |
Family
ID=6287701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8629011A Expired GB2185099B (en) | 1985-12-05 | 1986-12-04 | Ventilating element for roofs |
Country Status (7)
| Country | Link |
|---|---|
| AT (1) | AT395996B (en) |
| DE (1) | DE3543005A1 (en) |
| DK (1) | DK159885C (en) |
| FR (1) | FR2591255B1 (en) |
| GB (1) | GB2185099B (en) |
| IT (1) | IT1205538B (en) |
| NL (1) | NL192271C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2198834A (en) * | 1986-09-11 | 1988-06-22 | Braas & Co Gmbh | Roof ventilator |
| GB2193515B (en) * | 1986-08-09 | 1990-04-11 | Kenneth Douglas James | Roof space ventilator |
| AU641385B2 (en) * | 1989-04-14 | 1993-09-23 | Tonwarenfabrik Laufen Ag | A roofing device |
| GB2288227A (en) * | 1994-03-30 | 1995-10-11 | Michael John Rhodes | Roof ventilation device |
| GB2321262A (en) * | 1997-01-21 | 1998-07-22 | David Frederick Martin | Roof underlay lap ventilator |
| GB2374092A (en) * | 2001-02-28 | 2002-10-09 | Easyvent Ltd | Roof ventilation |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1153028A (en) * | 1966-10-28 | 1969-05-21 | Metallgesellschaft Ag | Gas Flow Equalization device for an Electrostatic Precipitator |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1243372B (en) * | 1960-08-26 | 1967-06-29 | Carl Lohmann | Device for ventilating and ventilating a roof space covered with a pantile roof |
| EP0042539B1 (en) * | 1980-06-20 | 1983-11-09 | Aeroform Lüftungstechnik GmbH | Ridge ventilation on roofs |
| DE3125868A1 (en) * | 1981-07-01 | 1983-01-20 | Ewald Dörken AG, 5804 Herdecke | Air-supply and air-extraction element for subsequent installation into pitched roofs |
| DE3202509A1 (en) * | 1982-01-27 | 1983-08-04 | Herbert 4933 Blomberg Betke | Device for preventing condensation on roof foils |
| DE3500484A1 (en) * | 1984-01-12 | 1985-07-25 | Glidevale Building Products Ltd., Pinxton, Nottinghamshire | VENTILATION DEVICE FOR ROOF CONSTRUCTIONS |
| GB2169324B (en) * | 1985-01-04 | 1988-08-17 | Anchor Building Products Ltd | Roof space ventilation |
-
1985
- 1985-12-05 DE DE19853543005 patent/DE3543005A1/en active Granted
-
1986
- 1986-12-02 FR FR868616810A patent/FR2591255B1/en not_active Expired
- 1986-12-03 AT AT0322186A patent/AT395996B/en not_active IP Right Cessation
- 1986-12-03 DK DK582586A patent/DK159885C/en active
- 1986-12-04 GB GB8629011A patent/GB2185099B/en not_active Expired
- 1986-12-04 NL NL8603094A patent/NL192271C/en not_active IP Right Cessation
- 1986-12-05 IT IT83450/86A patent/IT1205538B/en active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1153028A (en) * | 1966-10-28 | 1969-05-21 | Metallgesellschaft Ag | Gas Flow Equalization device for an Electrostatic Precipitator |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2193515B (en) * | 1986-08-09 | 1990-04-11 | Kenneth Douglas James | Roof space ventilator |
| GB2198834A (en) * | 1986-09-11 | 1988-06-22 | Braas & Co Gmbh | Roof ventilator |
| GB2198834B (en) * | 1986-09-11 | 1990-05-23 | Braas & Co Gmbh | Ventilator element |
| AU641385B2 (en) * | 1989-04-14 | 1993-09-23 | Tonwarenfabrik Laufen Ag | A roofing device |
| GB2288227A (en) * | 1994-03-30 | 1995-10-11 | Michael John Rhodes | Roof ventilation device |
| GB2321262A (en) * | 1997-01-21 | 1998-07-22 | David Frederick Martin | Roof underlay lap ventilator |
| GB2374092A (en) * | 2001-02-28 | 2002-10-09 | Easyvent Ltd | Roof ventilation |
Also Published As
| Publication number | Publication date |
|---|---|
| DK582586A (en) | 1987-06-06 |
| DE3543005A1 (en) | 1987-06-11 |
| DE3543005C2 (en) | 1988-12-08 |
| ATA322186A (en) | 1992-09-15 |
| DK159885C (en) | 1991-06-24 |
| GB8629011D0 (en) | 1987-01-14 |
| AT395996B (en) | 1993-04-26 |
| NL8603094A (en) | 1987-07-01 |
| GB2185099B (en) | 1989-10-25 |
| DK582586D0 (en) | 1986-12-03 |
| FR2591255A1 (en) | 1987-06-12 |
| IT1205538B (en) | 1989-03-23 |
| IT8683450A0 (en) | 1986-12-05 |
| DK159885B (en) | 1990-12-24 |
| NL192271B (en) | 1996-12-02 |
| NL192271C (en) | 1997-04-03 |
| FR2591255B1 (en) | 1989-05-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20001204 |