CA1179472A - Device for bridging the joint between two parts of roof and method for testing its tightness - Google Patents
Device for bridging the joint between two parts of roof and method for testing its tightnessInfo
- Publication number
- CA1179472A CA1179472A CA000412707A CA412707A CA1179472A CA 1179472 A CA1179472 A CA 1179472A CA 000412707 A CA000412707 A CA 000412707A CA 412707 A CA412707 A CA 412707A CA 1179472 A CA1179472 A CA 1179472A
- Authority
- CA
- Canada
- Prior art keywords
- narrow strip
- strip
- expansion joint
- opening
- side sections
- 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.)
- Expired
Links
- 238000012360 testing method Methods 0.000 title claims description 14
- 238000000034 method Methods 0.000 title abstract description 4
- 239000002184 metal Substances 0.000 claims description 10
- 239000013013 elastic material Substances 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000002950 deficient Effects 0.000 abstract description 3
- 239000012858 resilient material Substances 0.000 abstract 1
- 230000007547 defect Effects 0.000 description 8
- 230000006378 damage Effects 0.000 description 7
- 238000009434 installation Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 238000004073 vulcanization Methods 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000013101 initial test Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000011179 visual inspection 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
- E04D13/15—Trimming strips; Edge strips; Fascias; Expansion joints for roofs
- E04D13/151—Expansion joints for roofs
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Examining Or Testing Airtightness (AREA)
- Roof Covering Using Slabs Or Stiff Sheets (AREA)
- Building Environments (AREA)
- Gasket Seals (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE:
An expansion joint unit is made up of two side sections and an expansion joint strip made of a resilient material and bridging the joint with its center portion. The edge portions of the expansion joint strip are vulcanized to the side sections. Disposed between the expansion joint strip and the side portions are separating strips defining chambers which are inflatable by way of openings.
According to the method, a pump and/or pressure guage is connected to the openings for supplying compressed air to the closed space and the pressure is observed over a period of time. A drop in pressure is a clear indication of a defective expansion joint element.
An expansion joint unit is made up of two side sections and an expansion joint strip made of a resilient material and bridging the joint with its center portion. The edge portions of the expansion joint strip are vulcanized to the side sections. Disposed between the expansion joint strip and the side portions are separating strips defining chambers which are inflatable by way of openings.
According to the method, a pump and/or pressure guage is connected to the openings for supplying compressed air to the closed space and the pressure is observed over a period of time. A drop in pressure is a clear indication of a defective expansion joint element.
Description
~7g~2 DEVICE FOR BRIDGING THE JOINT BETWEEN
TWO PARTS OF ROOF AND METHOD FOR TESTING
IT S T I GHTNE S S
BACKGROUND AND SUMMARY OF INVENTION:
This invention relates to a device for bridging the gap or joint between two composite parts of roofing.
The device consists of an expansion joint strip, the center section of which is made of a rubber elastic material and is placed in the joint, while the two side sections, being made of sheet metal to which the edges of the center section.
are vulcanized in a waterproof manner, are adhered to the "
portions of the roofing on either side of the joint. The ~75~2 1 invention further relates to a method of testing the device for tightness.
Devices of the foregoing type are known from Swiss Patent CH-PS 456.106 (METOBA ANSTALT) and zre sold com-mercially under the generic term of "dilatation element".
Although dilatation elements of this ty~e have proven their merit a hundred thousand times, defects do occasionally occur and they may have a variety of causes.
In addition to defects caused by mechanical damage, chemical lo decomposition, disintegration due to the impact of W
radiation, and production errors in the vulcanization process resulting in the formation of blisters and insufficient adhesive properties, the majority o~ defects that occur are due to improper installation.
Since the causes for the various defects are known, a number of suggestions to avoid damage have been made in the past. In particular, suggestions have been advanced to guard against mechanical and chemical destruction and against the effects of ultraviolet radiation. The following publications deal with matters of this kind:
DE-OS 17 59 246 tSchoop)~ DE-GM 70 44 967 (Wetra-Trachsel & Co.) and DE-OS 20 18 309 and DE-AS 25 31 695 (E. Ammann AG).
No protection, however, has so far been available against faulty installation. In particular, the careless handling of blow-torches has been found time and again the cause of damage to the rubber elastic center section.
This has given rise to the need to inspect the expansion 72 t 1 joint element after completion of the installation.
German public disclosure DE OS 41 365 (Schoo) proposes a detachable cover or lid to make visual inspection possible in the event of damage. To this end, the cover needs to be detached from the dilatation element proper and later be returned to it and reattached by cementing or soldering. Quite apart from the fact that the rubber elastic center portion may easily be destroyed as the cover is reattached to the dilatation element, this prior art proposal, lo as previously mentioned, merely affords a visual inspaction from above. Frequently, however, an unsatisfactory adhesion of the rubber elastic material forming the center section to the sheet metal side sections is invisible to the eye.
This is particularly true of detachments occurring at the underside of the sheet metal sections, and where leaking is caused by blister formation in the rub~er elastic center section.
It is the object of the present invention to provide a device for bridging or covering the joint between two
TWO PARTS OF ROOF AND METHOD FOR TESTING
IT S T I GHTNE S S
BACKGROUND AND SUMMARY OF INVENTION:
This invention relates to a device for bridging the gap or joint between two composite parts of roofing.
The device consists of an expansion joint strip, the center section of which is made of a rubber elastic material and is placed in the joint, while the two side sections, being made of sheet metal to which the edges of the center section.
are vulcanized in a waterproof manner, are adhered to the "
portions of the roofing on either side of the joint. The ~75~2 1 invention further relates to a method of testing the device for tightness.
Devices of the foregoing type are known from Swiss Patent CH-PS 456.106 (METOBA ANSTALT) and zre sold com-mercially under the generic term of "dilatation element".
Although dilatation elements of this ty~e have proven their merit a hundred thousand times, defects do occasionally occur and they may have a variety of causes.
In addition to defects caused by mechanical damage, chemical lo decomposition, disintegration due to the impact of W
radiation, and production errors in the vulcanization process resulting in the formation of blisters and insufficient adhesive properties, the majority o~ defects that occur are due to improper installation.
Since the causes for the various defects are known, a number of suggestions to avoid damage have been made in the past. In particular, suggestions have been advanced to guard against mechanical and chemical destruction and against the effects of ultraviolet radiation. The following publications deal with matters of this kind:
DE-OS 17 59 246 tSchoop)~ DE-GM 70 44 967 (Wetra-Trachsel & Co.) and DE-OS 20 18 309 and DE-AS 25 31 695 (E. Ammann AG).
No protection, however, has so far been available against faulty installation. In particular, the careless handling of blow-torches has been found time and again the cause of damage to the rubber elastic center section.
This has given rise to the need to inspect the expansion 72 t 1 joint element after completion of the installation.
German public disclosure DE OS 41 365 (Schoo) proposes a detachable cover or lid to make visual inspection possible in the event of damage. To this end, the cover needs to be detached from the dilatation element proper and later be returned to it and reattached by cementing or soldering. Quite apart from the fact that the rubber elastic center portion may easily be destroyed as the cover is reattached to the dilatation element, this prior art proposal, lo as previously mentioned, merely affords a visual inspaction from above. Frequently, however, an unsatisfactory adhesion of the rubber elastic material forming the center section to the sheet metal side sections is invisible to the eye.
This is particularly true of detachments occurring at the underside of the sheet metal sections, and where leaking is caused by blister formation in the rub~er elastic center section.
It is the object of the present invention to provide a device for bridging or covering the joint between two
2~ surface sections o~ roofing, whereby the device is amenable to being tested for tightness in an easy and safe way after installation.
This is accomplished according to the invention by a device which is characterized in that at least along the lateral joint edges and at least approximately along their entire length, in the area in which the rubber elastic expansion joing strip is vulcanized to the side sections, narrow separating strips sealingly enclosed by the vulcanized expansion joint strip are adhered to the side sections, and that at least one opening extends from the ~7~3~7~
1 separating strip to the outside.
The device accordin~ to the invention is capable of being tested for tightness at any time by the testing method, likewise in accordance with the invention. The method steps are:
a) Insertion of the nozzle of a combination pump and pressure gauge into the opening leading to the separating strip.
b) Introduction of air into the space between the separating strip and the expansion joint strip.
c) Observation of the pressure building up in the closed space.
The invention will be described in further detail with reference to some of its embodiments as illustrated in the drawings, and the testing method will likewise be discussed in further detail hereinbelow.
IN THE DRAWINGS:
FIG. 1 is a perspective view of an expansion joint element with a built-in cover member;
FIG. 2 is a sectional view along the line I-I of FIG. l;
FIG. 3 is a sectional view of an expansion joint element in which the rubber elastic expansion strip is vulcanized on each side to the adjacent side section;
FIG. 4 is a partial sectional view, in enlarged scale, of the element of FIG. 3, with a part of a pump inserted in the opening;
FIG. 5 shows the opening in the side section of the dilatation element of FIG. l;
FIG. 6 is a section through the opening along the line V-V of FIG. 5 with a part of the pump inserted; and 7;~
FIG. 7 is an illustration of the method of testing the inventive device fox tightness.
DETAILED DESCRIPTION:
The expansion joint element of FIGS. 1 and ~ is generally of the structural type disclosed in German patent application DE-AS 25 31 695.
More specifically, the device for closing or bridging the gap or joint between two composite parts of roofing consists of an expansion joint strip generally designated 1 made of a rubber elastic material. The joint 3 in the roofing is covered by the mid or central portion 2 of the expansion joint strip 1. The side or edge portions 4 of the expansion joint strip 1 are vulcanized from below to the side sections 5. Placed upon the center portion 2 is a cover strip 6 of sheet metal which is in part overlapped by the two side sections 5. In the area of the edge portions 4 of the expansion strip 1, the side sections 5 are provided with separating strips or spacers 7 to prevent an intimate engagement between the expansion joint strip 1 and the side sections 5. The spacers 7 run parallel with the edges 8 of the joint, beginning a few centimeters from the end of the joint and ending approximately at the head of the expansion joint element. In the illustrated embodiment, howaver, the two separating strips or spacers 7 are interconnected by a piece of separating strip 9 extending perpendicular to the longitudinal direction of the strips 7.
The separating strips 7 may be made of oil paper, for example, suitable to be adhesively attached to the side sections prior to vulcanization. The separating strips 7 1 may also be made of spreadable or sprayable chemical sub-stances capable of being applied to the proper places with the help of a template.
Of similar construction is an expansion joint element which closely follows a structure described in Swiss patent CH PS 456,106. In this device, the two side sections 5 are engaged by the rubber elastic expansion joint strips from both sides, that is, from below and from above. The center portion 2 remains exposed and freely accessible to visual lo inspection. The separating s~rips 7 are applied to the under-side and the upper surface of the side sections 5.
Also in this embodiment, the separating strips 7 may be connected across the head end, while at the opposite end they stop short of the edges of the side sections 5.
In addition to the above described embodiments of the expansion joint element, other structural forms may likewise be provided with separating strips in accordance with the same princi.ple. It is merely necessary that the separating strips extend approximately parallel to and along the entire length of the joint and define a closed space or chamber between side sections and expansion joint strip.
This chamber, designated lO in FIG. 4, has at least one opening, and at the most two openings, 11 leading to the outside. Depending on ~he particular construction of the expansion joint element, the opening 11 extends either through the expansion joint strip l or through the side section S.
In one embodiment having one opening 11, the nozzle 12 of a combined pump and pressure gauge 13 is inserted into the opening 11. If the opening ll extends through the rubber elastic material of the expansion joint strip l, then it suffices for the nozzle to be of a configuration that ensures a positive sealing and proper retention (see FIG.
4).
,.
1 If the opening 11 leads through the sheet metal side sections 5, the nozzle 21 must be capable of being retained in the opening. Therefore, the opening 11 is provided with two arcuate segments 14 each of less than 90 but with an inner diameter in excess of the diameter of the opening proper (FIG. 5). ~it~ing this particular opening is the nozzle 12 having a head 15 with two projections or lobes 16. Below the projections are arranged the outlet openings of the air ducts 17. Surrounding the nozzle 12 is a gasket 18, tightly lo sealing off the opening 11. After rotating the nozzle 12 ~hrough 90, the two lobes 16, which fit into the segments 14, engage the side section 5 from below, with the result that the gasket 18 is packed into tight engagement with the side sections 5. Simultaneously, the expansion joint strip 1 is pushed slightly down by the head-15 of the nozzle 12, thereby exposing the outlet openings of the air ducts 17.
The method of testing the expansion joint element for tightness is extremely straightforward. Into the opening 11 of an expansion joint element is inserted a nozzle 12 of a combined pump and pressure gauge. Thereupon, compressed air is supplied until a certain pressure is reached in the space or chamber 10 as indicated on the pressure gauge.
When the pressure remains constant over a certain period of time, the expansion joint element is tight, whereas a drop in pressure indicates that air is escaping and that there is leaking. Providing the expansion joint element with two openings 11 will increase the reliability of the testing method.
FIG. 7 shows an embodiment in which the noz~le 12 of a pump 18, symbolized by a simple hand pump, is connected - to an opening 11, while the second opening 11 has attached 1 thereto a manometer, symbolized by a gauge 19, likewise by way of a nozzle 12. Again, compressed air is supplied by the pump 18 to the chamber 10 defined by the separating strips 7. As in the previously described embodiment, a pressure drop observed during a certain period of time is indicative of a leakage in the expansion joint element. On the other hand, if the pressure gauge fails to register an increase in pressure, in spite of the compressed air pumped into the chamber 10, this shows that the chamber 10 has no free passage lo and this may indicate either a faulty vulcanization or a defective separation strip. In the installed condition, this may also mean that the expansion joint element was bent too sharply which is likewise impermissible because sharp edges may cause damage to the expanding strip.
The device and the testing method according to the invention entail considerable advant.ages for the manufacturer as well as the user. First, the manufacturer is in a position to test each expansion joint element for tightness, and thus for possible manufacturing defects, prior to shipping. This initial testing especially may be carried out with a considerable pressure, whereby any hidden defects, like blister formation and insufficient adhesive properties, can easily be detected.
If the expansion joint strip 1 does not firmly adhere to the side sections 5, it will become detached due to the high pressure. In the event of blister formation, the rubber elastic material will burst.
The same test can be performed by the tradesman after installation on the construction site, so that he can easily determine whether the device has been destroyed z 1 by overheating or excessive bendiny or folding.
Upon application of the insulating material, the test may be repeated. If now any defects become evident, it can safely be assumed that they are due to the insulating operation. Defects of this type may occur by careless working with the torch flame.
Finally, in the event of water damage to the finished flat roof, the testing method according to the invention permits to establish beyond doubt whether it was caused by a defective dilatation element, thus avoiding unnecessary removal of the expansion joint element and affording a clear cut assignment of responsibility for liability claims.
The device of the invention may take a variety of structural forms commensurate with the many structural shapes of expansion joint elements, without departing from the basic concept of forming a closed space by providing separating strips between the side sections and the expansion joint strip of an expansion joint element.
In addition to the simplest solution described herein, namely, to provide free openings 11, it is also feasible to provide valves and~or connecting means for the test instruments or pump, respectively, fixedly attached to the expansion joint element.
The described nozzle, pump and pressure gauge means have been included for the sake of completeness only. The testing means, i.e., pump, pressure gauge and connecting members, do not form a part of the invention.
_ g _ ~'7~ 2 1 Finally, it may be mentioned that the testing medium, in addition to compressed air, may also be water or any other low viscosity mediumO
, -- 10 --
This is accomplished according to the invention by a device which is characterized in that at least along the lateral joint edges and at least approximately along their entire length, in the area in which the rubber elastic expansion joing strip is vulcanized to the side sections, narrow separating strips sealingly enclosed by the vulcanized expansion joint strip are adhered to the side sections, and that at least one opening extends from the ~7~3~7~
1 separating strip to the outside.
The device accordin~ to the invention is capable of being tested for tightness at any time by the testing method, likewise in accordance with the invention. The method steps are:
a) Insertion of the nozzle of a combination pump and pressure gauge into the opening leading to the separating strip.
b) Introduction of air into the space between the separating strip and the expansion joint strip.
c) Observation of the pressure building up in the closed space.
The invention will be described in further detail with reference to some of its embodiments as illustrated in the drawings, and the testing method will likewise be discussed in further detail hereinbelow.
IN THE DRAWINGS:
FIG. 1 is a perspective view of an expansion joint element with a built-in cover member;
FIG. 2 is a sectional view along the line I-I of FIG. l;
FIG. 3 is a sectional view of an expansion joint element in which the rubber elastic expansion strip is vulcanized on each side to the adjacent side section;
FIG. 4 is a partial sectional view, in enlarged scale, of the element of FIG. 3, with a part of a pump inserted in the opening;
FIG. 5 shows the opening in the side section of the dilatation element of FIG. l;
FIG. 6 is a section through the opening along the line V-V of FIG. 5 with a part of the pump inserted; and 7;~
FIG. 7 is an illustration of the method of testing the inventive device fox tightness.
DETAILED DESCRIPTION:
The expansion joint element of FIGS. 1 and ~ is generally of the structural type disclosed in German patent application DE-AS 25 31 695.
More specifically, the device for closing or bridging the gap or joint between two composite parts of roofing consists of an expansion joint strip generally designated 1 made of a rubber elastic material. The joint 3 in the roofing is covered by the mid or central portion 2 of the expansion joint strip 1. The side or edge portions 4 of the expansion joint strip 1 are vulcanized from below to the side sections 5. Placed upon the center portion 2 is a cover strip 6 of sheet metal which is in part overlapped by the two side sections 5. In the area of the edge portions 4 of the expansion strip 1, the side sections 5 are provided with separating strips or spacers 7 to prevent an intimate engagement between the expansion joint strip 1 and the side sections 5. The spacers 7 run parallel with the edges 8 of the joint, beginning a few centimeters from the end of the joint and ending approximately at the head of the expansion joint element. In the illustrated embodiment, howaver, the two separating strips or spacers 7 are interconnected by a piece of separating strip 9 extending perpendicular to the longitudinal direction of the strips 7.
The separating strips 7 may be made of oil paper, for example, suitable to be adhesively attached to the side sections prior to vulcanization. The separating strips 7 1 may also be made of spreadable or sprayable chemical sub-stances capable of being applied to the proper places with the help of a template.
Of similar construction is an expansion joint element which closely follows a structure described in Swiss patent CH PS 456,106. In this device, the two side sections 5 are engaged by the rubber elastic expansion joint strips from both sides, that is, from below and from above. The center portion 2 remains exposed and freely accessible to visual lo inspection. The separating s~rips 7 are applied to the under-side and the upper surface of the side sections 5.
Also in this embodiment, the separating strips 7 may be connected across the head end, while at the opposite end they stop short of the edges of the side sections 5.
In addition to the above described embodiments of the expansion joint element, other structural forms may likewise be provided with separating strips in accordance with the same princi.ple. It is merely necessary that the separating strips extend approximately parallel to and along the entire length of the joint and define a closed space or chamber between side sections and expansion joint strip.
This chamber, designated lO in FIG. 4, has at least one opening, and at the most two openings, 11 leading to the outside. Depending on ~he particular construction of the expansion joint element, the opening 11 extends either through the expansion joint strip l or through the side section S.
In one embodiment having one opening 11, the nozzle 12 of a combined pump and pressure gauge 13 is inserted into the opening 11. If the opening ll extends through the rubber elastic material of the expansion joint strip l, then it suffices for the nozzle to be of a configuration that ensures a positive sealing and proper retention (see FIG.
4).
,.
1 If the opening 11 leads through the sheet metal side sections 5, the nozzle 21 must be capable of being retained in the opening. Therefore, the opening 11 is provided with two arcuate segments 14 each of less than 90 but with an inner diameter in excess of the diameter of the opening proper (FIG. 5). ~it~ing this particular opening is the nozzle 12 having a head 15 with two projections or lobes 16. Below the projections are arranged the outlet openings of the air ducts 17. Surrounding the nozzle 12 is a gasket 18, tightly lo sealing off the opening 11. After rotating the nozzle 12 ~hrough 90, the two lobes 16, which fit into the segments 14, engage the side section 5 from below, with the result that the gasket 18 is packed into tight engagement with the side sections 5. Simultaneously, the expansion joint strip 1 is pushed slightly down by the head-15 of the nozzle 12, thereby exposing the outlet openings of the air ducts 17.
The method of testing the expansion joint element for tightness is extremely straightforward. Into the opening 11 of an expansion joint element is inserted a nozzle 12 of a combined pump and pressure gauge. Thereupon, compressed air is supplied until a certain pressure is reached in the space or chamber 10 as indicated on the pressure gauge.
When the pressure remains constant over a certain period of time, the expansion joint element is tight, whereas a drop in pressure indicates that air is escaping and that there is leaking. Providing the expansion joint element with two openings 11 will increase the reliability of the testing method.
FIG. 7 shows an embodiment in which the noz~le 12 of a pump 18, symbolized by a simple hand pump, is connected - to an opening 11, while the second opening 11 has attached 1 thereto a manometer, symbolized by a gauge 19, likewise by way of a nozzle 12. Again, compressed air is supplied by the pump 18 to the chamber 10 defined by the separating strips 7. As in the previously described embodiment, a pressure drop observed during a certain period of time is indicative of a leakage in the expansion joint element. On the other hand, if the pressure gauge fails to register an increase in pressure, in spite of the compressed air pumped into the chamber 10, this shows that the chamber 10 has no free passage lo and this may indicate either a faulty vulcanization or a defective separation strip. In the installed condition, this may also mean that the expansion joint element was bent too sharply which is likewise impermissible because sharp edges may cause damage to the expanding strip.
The device and the testing method according to the invention entail considerable advant.ages for the manufacturer as well as the user. First, the manufacturer is in a position to test each expansion joint element for tightness, and thus for possible manufacturing defects, prior to shipping. This initial testing especially may be carried out with a considerable pressure, whereby any hidden defects, like blister formation and insufficient adhesive properties, can easily be detected.
If the expansion joint strip 1 does not firmly adhere to the side sections 5, it will become detached due to the high pressure. In the event of blister formation, the rubber elastic material will burst.
The same test can be performed by the tradesman after installation on the construction site, so that he can easily determine whether the device has been destroyed z 1 by overheating or excessive bendiny or folding.
Upon application of the insulating material, the test may be repeated. If now any defects become evident, it can safely be assumed that they are due to the insulating operation. Defects of this type may occur by careless working with the torch flame.
Finally, in the event of water damage to the finished flat roof, the testing method according to the invention permits to establish beyond doubt whether it was caused by a defective dilatation element, thus avoiding unnecessary removal of the expansion joint element and affording a clear cut assignment of responsibility for liability claims.
The device of the invention may take a variety of structural forms commensurate with the many structural shapes of expansion joint elements, without departing from the basic concept of forming a closed space by providing separating strips between the side sections and the expansion joint strip of an expansion joint element.
In addition to the simplest solution described herein, namely, to provide free openings 11, it is also feasible to provide valves and~or connecting means for the test instruments or pump, respectively, fixedly attached to the expansion joint element.
The described nozzle, pump and pressure gauge means have been included for the sake of completeness only. The testing means, i.e., pump, pressure gauge and connecting members, do not form a part of the invention.
_ g _ ~'7~ 2 1 Finally, it may be mentioned that the testing medium, in addition to compressed air, may also be water or any other low viscosity mediumO
, -- 10 --
Claims (9)
PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A device for bridging a juncture between two composite parts of roofing, in the form of an expansion joint comprising a center portion made of a rubber elastic material bridging a gap between two sheet metal side portions, the lateral areas of said center portion being bondingly vulcanized in a water proof manner to the surface of said side sections, on either side of said gap the outer lateral areas of said sheet metal side portions to be connected to the roofing extending on both sides of said juncture, characterized in that, in said lateral bonding areas a narrow strip of separating means is introduced between the sheet metal and the rubber elastic material, the length of said narrow strip extending approximately over the full length of said lateral area and at least one opening conductively leads from said narrow strip to the outside for pressure testing the bond.
2. A device according to claim 1, characterized in that the narrow strips on both sides of the gap are connected to each other.
3. A device according to claim 1, characterized in that, the narrow strip of separating means is arranged approximately in the width center of the bonding area and that the opening leads from said narrow strip through the metal of the side section to the outside.
4. A device according to claim 1 characterized in that the center portion is vulcanized to both surfaces of the side sections, and that the narrow strip of separating means embraces the edges of the side sections adjacent the gap from both aides, with at least one opening leading from the separating strip through the rubber elastic material of the center portion to the outside.
5. A device according to claim 1, characterized in that, only one opening extends from the narrow strip to the outside.
6. A device according to claim 1, characterized in that, both ends of the narrow strip are provided with an opening leading to the outside.
7. A device according to claim 3, characterized in that the opening is in the form of a cylindrical bore with at least two lateral recesses therein.
8. A device according to claim 1, characterized in that narrow strip of separating means consists of a paper layer.
9. A device according to claim 1, characterized in that the narrow strip of separating means consists of a strip of a chemical separating substance provided upon the sheet metal.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH6413/81A CH655343A5 (en) | 1981-10-06 | 1981-10-06 | DEVICE FOR BRIDGING THE JOINT BETWEEN TWO PARTS OF A ROOF COVER AND USE THEREOF. |
| CH6413/81-1 | 1981-10-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1179472A true CA1179472A (en) | 1984-12-18 |
Family
ID=4309196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000412707A Expired CA1179472A (en) | 1981-10-06 | 1982-10-01 | Device for bridging the joint between two parts of roof and method for testing its tightness |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0076350B1 (en) |
| AT (1) | ATE10020T1 (en) |
| CA (1) | CA1179472A (en) |
| CH (1) | CH655343A5 (en) |
| DE (1) | DE3166873D1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5143568A (en) * | 1989-10-25 | 1992-09-01 | J.P. Sheahan & Associates | Method for leak detection and non-destructive quality control testing for roofing seams |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3123188A (en) * | 1964-03-03 | Expansion joints for metal panels | ||
| DE2531695C3 (en) * | 1975-07-16 | 1985-12-12 | Ernst Ammann AG Spenglerei - Halbfabrikate, Wallenwil | Device for bridging the joint between two parts of a roof covering |
| DE2941365A1 (en) * | 1979-10-12 | 1981-04-23 | Traugott Niederrohrdorf Schopp | DEVICE FOR BRIDGING THE JOINT BETWEEN TWO PARTS OF A ROOF COVER |
-
1981
- 1981-10-06 CH CH6413/81A patent/CH655343A5/en not_active IP Right Cessation
- 1981-12-15 EP EP81810498A patent/EP0076350B1/en not_active Expired
- 1981-12-15 AT AT81810498T patent/ATE10020T1/en not_active IP Right Cessation
- 1981-12-15 DE DE8181810498T patent/DE3166873D1/en not_active Expired
-
1982
- 1982-10-01 CA CA000412707A patent/CA1179472A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5143568A (en) * | 1989-10-25 | 1992-09-01 | J.P. Sheahan & Associates | Method for leak detection and non-destructive quality control testing for roofing seams |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0076350A3 (en) | 1983-05-25 |
| EP0076350B1 (en) | 1984-10-24 |
| ATE10020T1 (en) | 1984-11-15 |
| DE3166873D1 (en) | 1984-11-29 |
| EP0076350A2 (en) | 1983-04-13 |
| CH655343A5 (en) | 1986-04-15 |
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| MKEC | Expiry (correction) | ||
| MKEX | Expiry |