CA1107096A - Fastening device - Google Patents
Fastening deviceInfo
- Publication number
- CA1107096A CA1107096A CA298,903A CA298903A CA1107096A CA 1107096 A CA1107096 A CA 1107096A CA 298903 A CA298903 A CA 298903A CA 1107096 A CA1107096 A CA 1107096A
- Authority
- CA
- Canada
- Prior art keywords
- profile
- flanges
- web
- rear end
- driving
- 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
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- Joining Of Building Structures In Genera (AREA)
Abstract
CANADIAN PATENT APPLICATION
OF
BERTIL INGVAR BURSTR?M
FOR
FASTENING DEVICE
Abstract of the Disclosure The disclosure relates to a fastening device for driving into building material, the device consisting of one or more elongate V profiles whose shanks, in the vicinity of the forward, penetrating end of the profiles are outwardly relieved or bevelled such that building material, on driving of the device into the material, is trapped between the shanks and forces them apart. A tip at the forward end of the profile is designed such that, on being driven in, it moves in the driving-in direction.
OF
BERTIL INGVAR BURSTR?M
FOR
FASTENING DEVICE
Abstract of the Disclosure The disclosure relates to a fastening device for driving into building material, the device consisting of one or more elongate V profiles whose shanks, in the vicinity of the forward, penetrating end of the profiles are outwardly relieved or bevelled such that building material, on driving of the device into the material, is trapped between the shanks and forces them apart. A tip at the forward end of the profile is designed such that, on being driven in, it moves in the driving-in direction.
Description
The present invention relates to ~ fastening device or connection device which is intended to be driven, by means of a hammer, nail ~un or the like, into building materials, such as wood/ lightweight concrete, plaster, plastics and other construction materials such as leather, and serves, in the driven state to support miscellaneous objects intended for suspension on or anchorage to the buildin~ material, such as mesh reinforcement, electric cables, fluid conduits, apparatuses etc., and to interconnect elements of building material. The device may be designed for the same function as a nail, staple or nail with spreading shaft.~lore precisely, the device accor~in~
to the invention is of the type which is shaped as, or includes, a strai~ht profile which has a forward penetration end and a rear end and which includes at least one portion, extending at least throughout the major portion of the length of the pro~ile towards the rear end t and provided with a web and shanks con-nected thereto, the shanks being at their distal ends in relation to the web, substantially free, and the web forming a tip portion at the forward end of the profile.
High demands are placed on nails and staples etc. as regards economy and simple manageability at the same time as - they are required to display great tensile,shearing and tor~
sional strength. Furthermore, desires have been expressed from certain quarters as regards restriction of the driving-in length and the driving-in work, this lat~er being particularly important as far as industrial accidents are concerned. There are also needs in the art for nails or fixing devices for buildin~ materials such as lightwei~ht concrete in which the PH/wdh nail, not fully driven in, may constitute a ~end and withdrawal--~761 ~
resistant spacer and fixing means for additional insulating mats with exteriorly applied mesh reinforcement and plaster.
A large number of embodiments of nails, staples, screw nails and other fixing devices are known for wood and also for materials such as li~htwei~ht concrete, but the fixing devices which display good strength qualities are relatively expensive to obtain and/or use, whereas the t~chnical pe~formance of the more economical variations is restricted.
The object of the present invention is to satisfy the desires and requirements touched upon above and to eliminate the above-mentioned inconveniences.
This object has been achieved according to the invention in that at least one of the shanks in association with the above-mentioned forward end has an obliquely outwardly polnting inner surface such that material, on drivin~ of the device into the material, is trapped between the shanks and forces them apart, Moreover, the tip portion, taken in a section of the web in the longitudinal direction thereof, is substantially symmetrical as re~ards the centre line o~
this section such that the tip portion, auring the driving-in process, moves inthelon~itudinal direction of the web.
Such a device constructed accordin~ to the invention is preferably manufactured from a ~hin, cold-rolled (or ri~idified and hardened in some other way) and resilient sheet-metal material which, for the production of a nail embodiment of the invention, is in strip form, the strip beina bent lon~i-tudinally and preferably symmetrically to form an open fluted profile of V, U, C or like cross-section, one end of the profile bein~
l, pointed or obliquely cut with the point in the line of symmetry of the pro~ile, and one or both shanks of the profile in association with the pointed end are relieved slightly apart or outwardly as seen ~rom the line of symmetry so that material, on driving-in o~ the nail, is collected between the shanks and thereby successivel~ forces them outwardly from each other to a steadily larger opening angle, depending upon the degree to which the nail has been driven in, the relief, the material rigidity, the fibre direction etc. In order to increase this wringing effect, the ends of the shanks in asso-ciation with the point may moreover be bevelled or sharpened `
from the inside outwardly, which makes for easier driving-in of the nail. If the base of the shanks (or the web connecting them in a region of the tip end)isweakened by, for example, a deep fold or by stamping, or if the shanks, thanks to softer profile material, are relatively yïeldable, a single interior bevelling on each shank end can give sufficient wringing effect without the need to resort to relieving the shanks. The presence of the above-mentioned bending, stamping or folding is advan-tageous and to be preferred since the ef ect is, as it were, of a hinge about which the profile shanks twist under the driving-in and forcing-apart processes.
At the other, rear end of the profile - the shaft or head end of the nail - the shanks can be obliquely and sharply outwardly or inwardly bent a short distance from the central or web portion of the profile, so that the web portion thereby projects forwardly at the hRad end, with the advantageous result that the tool used for the driving-in opera-tion most easily .~ , strikes only this portion so that the risk for deformation or breaking of the profile is reduced to a minimum. Alterna-tively, the shanks may be obliquely (for example about 15-30) severed a distance from the head end which originally extended at right angles to the line of symmetry of the profile. If a recess of suitable size is made in the shanks close to the head end, this recess forms a practical means of fi~ation for wire, plaster mesh, electric cables and the llke.
In other embodiments of the device according to the invention, several profiles in accordance with the above-described embodiment are interconnected. According to one variation, two such profiles are fixedly connected at the profile ridges such that a stellar formation is obtained in which the shanks constitute the points. In another variation, the bottom or web inner sides of two profiles are turned towards each other and the shanks are connected to each other at the rear ends of the profiles. These two profiles may lie closel~
adjacent one another such that the profiles together will be substantially tubular in form; or, spaced from each other such that the profiles and their connection will be in U-shape for thus fo~ming a staple.
It should be observed, in the device according to the invention, that its tip, formed by the web (in the embodi-ment relating to nails and staples), or tips (in the embodiment relating to nails with spreading shafts) is designed such tha-t the device, on hein~ ~iven into the ~aterial entirely, moves in the longi-tudinal direction of the web, or the driving-in direction. Thus, the tip or tips point in ~he same direction as defined by the web. This may also be expressed such that the tip portion, seen in a section of the we~ in ~he longitudinal direction thereof, is substantially symmetrical with respect to the centre line o~ this section. During the drivin~-in process, the tip portion moves, thusl in the driving-in ~irection ana displays no `natural strivin~ to deviate from this direction.
In a further modi~ication of the device according to the invention, profiles of the first-mentioned embodiment are interconnected hroadside-on, and -the device can be punched and pressed from a strip whose width corresponds to the length of the nails or pro~iles, a smaller connecting piece inter-connectin~ the shanks between the nails. This embodiment is usable as a shear, tensile and torsion resistant union in, among other constructions, pile joints and corner joints in roof truss structures, in which the nail strip is then placed as a round collar before the pressiny toaether of the building elements.
Thanks to its ~ringing function, the device can also anchor well in end pieces and, if it is provided with the above-described tip at both ends, it can unction as a power ful spike also for end pieces with, thanks to its progressive e~ect, approximately e~uilateral penetration in each wooden piece.
When the fastening device is used for the suspension of insulation mats, mesh reinforcement and plaster, it is dri-ven only partly into the substrate. Equally long free shaft lengths are obtained if a small flap on the shanks is outwardly or inwardly bent between the profile ends, these -Elaps formin~
stops against the substrate when the device is driven into it.
The good withdrawal resistance of the fastening device is based partly on the resilien~ acting pressure from the shanks of the profile on the material along a large widespread surface, and the thence emanating withdrawal-preventing friction forces; and partly on the resistance of the device against reassuming its original shape since the device must, on withdrawal, go out the same way it came in the material, unless the material brea~s or is deformed because of the great angular expansion or wringing of the profile or if the building material is too brittle or weak. The withdrawal strength can be further increased if the insides and outsides of the shanks are provided, for example by stamping, with grooves or scale-like patterns in conjunction with the manufacturing pro~ess, these grooves suitably being oriented at right angles to the longitudinal axis of the profile.
A corresponding effect can also be achieved bv suitable material coating or chemical processing.
Thanks to the open profile, without any inaccessible, moisture-trapping cavities, the device is suitable from the point of view of corrosion. The open profile section imparts to the device, in relation to its weight, good resistance to shearing and low bearing stress in the material after driving-in, as well as good resistance to bending, twisting and buckling.
In several embodiments, the device moreover allows of the nesting of several elements in each other, which facilitates automation of the driving-in operation, for example, by means of a compressed-air nail gun.
~7~
However, the material ~or the fastening device according to the invention need no~ necessarily be elastically resilient for achieving ~ood withdrawal resi~tance. Hence, in many cases common sheet iron may constitute the starting material for the manu~acture of the device, but, for example, hard plastic sheeting is usable when the building material is relatively soft.
The nature of the present invention and its aspect will be more readily understood ~rom the following brief description of the accompanying drawings, and discussion relating thereto.
In the accompanying drawings:-Figs. la, b and c illustrate a nail device in a sharp-ly-bent V-profile embodiment, in which the shanks 1 and 2 are outwardly relieved in association with the nail tip 3 and obliquely and sharply outwardly bent to form lugs 4 and 5 in asso ciation with the head end 6;
Fig. 2 illustrates, in the same views as in Fig. 1, another nail device in sharply bent U-profile embodiment, where only the one shank 1 is outwardly relieved at the tip end and where both of the shanks are provided with outwardly bent stops or flaps 7, 8 and with a friction-increasing stamping 9 throughout a portion of the shank outer sides and of the bottom or web inner side. At the head end~ the shanks have been obliquely and sharply inwardly bent to lugs 10 and 11;
Fig. 3 illustrates, in the same views as Fig. 1, a C-profile embodiment in which both ends have been obliquely seve~ed and outwerdly relieved and moreover provided w1th .
. , 7~6 oblique bevelling 12 to form a spike e~bodil~ent.
Fig. 4 shows nail devices in a V-prblile embodiment nested in each other to form a magazine in which each nail head 6 has been provided with an oblique severing 14 a distance from the central or web portion of the profile;
Figs. 5a and b illustrate a strip of V-shaped nail devices spiculated at both ends 3, united by means o~
connection pieces 15, the devices having interior oblique bevelling 12 instead of relieving at the shank ends and with shank bases or shank webs at both profile ends weakened by means of ~rooves 16 in the material thickness. The grooves 16 can also be realized, by, for example, stampin~;
Fig. 6 illustrates two V-profile nails partially driven into building material 17 which is provided with exte-riorly placed supplementary insulation 18 and mesh reinforce~ent 19 which is hooked onto recesses 20 provided in the shanks adjacent the nail head 6. The rear ends 21 and 22 of the shanks can, after driving-in of the device, be bent over and fi~ the mesh 19 which unites and supports the cement plaster 23. Fig. 6 may also be viewea such that the left-hand nail is a side elevation of the right-hand nail;
Figs. 7a, b illustrate an embodiment of the invention in which two V~profile nails are interconnected by mean5 of a bow
to the invention is of the type which is shaped as, or includes, a strai~ht profile which has a forward penetration end and a rear end and which includes at least one portion, extending at least throughout the major portion of the length of the pro~ile towards the rear end t and provided with a web and shanks con-nected thereto, the shanks being at their distal ends in relation to the web, substantially free, and the web forming a tip portion at the forward end of the profile.
High demands are placed on nails and staples etc. as regards economy and simple manageability at the same time as - they are required to display great tensile,shearing and tor~
sional strength. Furthermore, desires have been expressed from certain quarters as regards restriction of the driving-in length and the driving-in work, this lat~er being particularly important as far as industrial accidents are concerned. There are also needs in the art for nails or fixing devices for buildin~ materials such as lightwei~ht concrete in which the PH/wdh nail, not fully driven in, may constitute a ~end and withdrawal--~761 ~
resistant spacer and fixing means for additional insulating mats with exteriorly applied mesh reinforcement and plaster.
A large number of embodiments of nails, staples, screw nails and other fixing devices are known for wood and also for materials such as li~htwei~ht concrete, but the fixing devices which display good strength qualities are relatively expensive to obtain and/or use, whereas the t~chnical pe~formance of the more economical variations is restricted.
The object of the present invention is to satisfy the desires and requirements touched upon above and to eliminate the above-mentioned inconveniences.
This object has been achieved according to the invention in that at least one of the shanks in association with the above-mentioned forward end has an obliquely outwardly polnting inner surface such that material, on drivin~ of the device into the material, is trapped between the shanks and forces them apart, Moreover, the tip portion, taken in a section of the web in the longitudinal direction thereof, is substantially symmetrical as re~ards the centre line o~
this section such that the tip portion, auring the driving-in process, moves inthelon~itudinal direction of the web.
Such a device constructed accordin~ to the invention is preferably manufactured from a ~hin, cold-rolled (or ri~idified and hardened in some other way) and resilient sheet-metal material which, for the production of a nail embodiment of the invention, is in strip form, the strip beina bent lon~i-tudinally and preferably symmetrically to form an open fluted profile of V, U, C or like cross-section, one end of the profile bein~
l, pointed or obliquely cut with the point in the line of symmetry of the pro~ile, and one or both shanks of the profile in association with the pointed end are relieved slightly apart or outwardly as seen ~rom the line of symmetry so that material, on driving-in o~ the nail, is collected between the shanks and thereby successivel~ forces them outwardly from each other to a steadily larger opening angle, depending upon the degree to which the nail has been driven in, the relief, the material rigidity, the fibre direction etc. In order to increase this wringing effect, the ends of the shanks in asso-ciation with the point may moreover be bevelled or sharpened `
from the inside outwardly, which makes for easier driving-in of the nail. If the base of the shanks (or the web connecting them in a region of the tip end)isweakened by, for example, a deep fold or by stamping, or if the shanks, thanks to softer profile material, are relatively yïeldable, a single interior bevelling on each shank end can give sufficient wringing effect without the need to resort to relieving the shanks. The presence of the above-mentioned bending, stamping or folding is advan-tageous and to be preferred since the ef ect is, as it were, of a hinge about which the profile shanks twist under the driving-in and forcing-apart processes.
At the other, rear end of the profile - the shaft or head end of the nail - the shanks can be obliquely and sharply outwardly or inwardly bent a short distance from the central or web portion of the profile, so that the web portion thereby projects forwardly at the hRad end, with the advantageous result that the tool used for the driving-in opera-tion most easily .~ , strikes only this portion so that the risk for deformation or breaking of the profile is reduced to a minimum. Alterna-tively, the shanks may be obliquely (for example about 15-30) severed a distance from the head end which originally extended at right angles to the line of symmetry of the profile. If a recess of suitable size is made in the shanks close to the head end, this recess forms a practical means of fi~ation for wire, plaster mesh, electric cables and the llke.
In other embodiments of the device according to the invention, several profiles in accordance with the above-described embodiment are interconnected. According to one variation, two such profiles are fixedly connected at the profile ridges such that a stellar formation is obtained in which the shanks constitute the points. In another variation, the bottom or web inner sides of two profiles are turned towards each other and the shanks are connected to each other at the rear ends of the profiles. These two profiles may lie closel~
adjacent one another such that the profiles together will be substantially tubular in form; or, spaced from each other such that the profiles and their connection will be in U-shape for thus fo~ming a staple.
It should be observed, in the device according to the invention, that its tip, formed by the web (in the embodi-ment relating to nails and staples), or tips (in the embodiment relating to nails with spreading shafts) is designed such tha-t the device, on hein~ ~iven into the ~aterial entirely, moves in the longi-tudinal direction of the web, or the driving-in direction. Thus, the tip or tips point in ~he same direction as defined by the web. This may also be expressed such that the tip portion, seen in a section of the we~ in ~he longitudinal direction thereof, is substantially symmetrical with respect to the centre line o~ this section. During the drivin~-in process, the tip portion moves, thusl in the driving-in ~irection ana displays no `natural strivin~ to deviate from this direction.
In a further modi~ication of the device according to the invention, profiles of the first-mentioned embodiment are interconnected hroadside-on, and -the device can be punched and pressed from a strip whose width corresponds to the length of the nails or pro~iles, a smaller connecting piece inter-connectin~ the shanks between the nails. This embodiment is usable as a shear, tensile and torsion resistant union in, among other constructions, pile joints and corner joints in roof truss structures, in which the nail strip is then placed as a round collar before the pressiny toaether of the building elements.
Thanks to its ~ringing function, the device can also anchor well in end pieces and, if it is provided with the above-described tip at both ends, it can unction as a power ful spike also for end pieces with, thanks to its progressive e~ect, approximately e~uilateral penetration in each wooden piece.
When the fastening device is used for the suspension of insulation mats, mesh reinforcement and plaster, it is dri-ven only partly into the substrate. Equally long free shaft lengths are obtained if a small flap on the shanks is outwardly or inwardly bent between the profile ends, these -Elaps formin~
stops against the substrate when the device is driven into it.
The good withdrawal resistance of the fastening device is based partly on the resilien~ acting pressure from the shanks of the profile on the material along a large widespread surface, and the thence emanating withdrawal-preventing friction forces; and partly on the resistance of the device against reassuming its original shape since the device must, on withdrawal, go out the same way it came in the material, unless the material brea~s or is deformed because of the great angular expansion or wringing of the profile or if the building material is too brittle or weak. The withdrawal strength can be further increased if the insides and outsides of the shanks are provided, for example by stamping, with grooves or scale-like patterns in conjunction with the manufacturing pro~ess, these grooves suitably being oriented at right angles to the longitudinal axis of the profile.
A corresponding effect can also be achieved bv suitable material coating or chemical processing.
Thanks to the open profile, without any inaccessible, moisture-trapping cavities, the device is suitable from the point of view of corrosion. The open profile section imparts to the device, in relation to its weight, good resistance to shearing and low bearing stress in the material after driving-in, as well as good resistance to bending, twisting and buckling.
In several embodiments, the device moreover allows of the nesting of several elements in each other, which facilitates automation of the driving-in operation, for example, by means of a compressed-air nail gun.
~7~
However, the material ~or the fastening device according to the invention need no~ necessarily be elastically resilient for achieving ~ood withdrawal resi~tance. Hence, in many cases common sheet iron may constitute the starting material for the manu~acture of the device, but, for example, hard plastic sheeting is usable when the building material is relatively soft.
The nature of the present invention and its aspect will be more readily understood ~rom the following brief description of the accompanying drawings, and discussion relating thereto.
In the accompanying drawings:-Figs. la, b and c illustrate a nail device in a sharp-ly-bent V-profile embodiment, in which the shanks 1 and 2 are outwardly relieved in association with the nail tip 3 and obliquely and sharply outwardly bent to form lugs 4 and 5 in asso ciation with the head end 6;
Fig. 2 illustrates, in the same views as in Fig. 1, another nail device in sharply bent U-profile embodiment, where only the one shank 1 is outwardly relieved at the tip end and where both of the shanks are provided with outwardly bent stops or flaps 7, 8 and with a friction-increasing stamping 9 throughout a portion of the shank outer sides and of the bottom or web inner side. At the head end~ the shanks have been obliquely and sharply inwardly bent to lugs 10 and 11;
Fig. 3 illustrates, in the same views as Fig. 1, a C-profile embodiment in which both ends have been obliquely seve~ed and outwerdly relieved and moreover provided w1th .
. , 7~6 oblique bevelling 12 to form a spike e~bodil~ent.
Fig. 4 shows nail devices in a V-prblile embodiment nested in each other to form a magazine in which each nail head 6 has been provided with an oblique severing 14 a distance from the central or web portion of the profile;
Figs. 5a and b illustrate a strip of V-shaped nail devices spiculated at both ends 3, united by means o~
connection pieces 15, the devices having interior oblique bevelling 12 instead of relieving at the shank ends and with shank bases or shank webs at both profile ends weakened by means of ~rooves 16 in the material thickness. The grooves 16 can also be realized, by, for example, stampin~;
Fig. 6 illustrates two V-profile nails partially driven into building material 17 which is provided with exte-riorly placed supplementary insulation 18 and mesh reinforce~ent 19 which is hooked onto recesses 20 provided in the shanks adjacent the nail head 6. The rear ends 21 and 22 of the shanks can, after driving-in of the device, be bent over and fi~ the mesh 19 which unites and supports the cement plaster 23. Fig. 6 may also be viewea such that the left-hand nail is a side elevation of the right-hand nail;
Figs. 7a, b illustrate an embodiment of the invention in which two V~profile nails are interconnected by mean5 of a bow
2~1 to form a st~ple in which one tip portion has been driven into a wooden board 25~
Figs. ~ and 9 are cross-sections of two variations of the V-profile embodiment in which the web connecting the shanks 1 and 2 is folded,-these variations providing increased resilience, change of shape and withdrawal resistance;
Figs. lOa and b show two identical devices connected to tubular form, each device having shanks bent from a strip-like web portion, the shanks on one device being connected, for example by welding, to corresponding shanks on the other device at the head end thereof. At the orward ends of the devices, the shanks are outwardly relieved and bevelled. This embodiment may also be produced from a square tube which is slit at diametrically opposed places from ~he ~ip to the vicinity of the other end, and the thus obtained shanks being relieved outwardly at the tip end and possibly bevelled; and Figs. 11 a and b show two identical devices of the same embodiment as that of Fig. 10 which are connected by, for example, welding, in web back-to-back relationship to form a stellar configuration.
- .
`~ , ]O
`'' . ~ ' ' .` ' - , .
Figs. ~ and 9 are cross-sections of two variations of the V-profile embodiment in which the web connecting the shanks 1 and 2 is folded,-these variations providing increased resilience, change of shape and withdrawal resistance;
Figs. lOa and b show two identical devices connected to tubular form, each device having shanks bent from a strip-like web portion, the shanks on one device being connected, for example by welding, to corresponding shanks on the other device at the head end thereof. At the orward ends of the devices, the shanks are outwardly relieved and bevelled. This embodiment may also be produced from a square tube which is slit at diametrically opposed places from ~he ~ip to the vicinity of the other end, and the thus obtained shanks being relieved outwardly at the tip end and possibly bevelled; and Figs. 11 a and b show two identical devices of the same embodiment as that of Fig. 10 which are connected by, for example, welding, in web back-to-back relationship to form a stellar configuration.
- .
`~ , ]O
`'' . ~ ' ' .` ' - , .
Claims (15)
1. A device such as a nail, spike, staple and the like, for driving into construction material such as wood, lightweight concrete, plaster and other construction materials such as leather, the device comprising a straight profile which has a forward, penetration end and a rear end which includes at least one portion extending from the forward end at least throughout a portion of the length of the profile to the rear end, and having a web and flanges connected to the web, the flanges being, at their distal edges in relation to the web, substantially free, and the web forming, at the forward end of the profile, a tip portion, wherein at least one of the flanges in association with said forward end has an obliquely outwardly pointing inner surface such that material, on driving-in of the device into the construction material, is trapped between the flanges and forces the flanges apart, and wherein the tip por-tion is designed such that under the driving-in process, it moves substantially in the longitudinal direction of the web
2. The device according to claim 1, wherein the flanges are sharply bent from the web
3. The device according to claim 1 or 2, wherein the web is substantially linear for forming a V-profile
4. The device according to claim 1 or 2, wherein the web is strip-shaped for forming a U-profile.
5. The device according to any one of claims 1 or 2, wherein the connection between the web and the flanges in-cludes a weakened section for facilitating in forming the flanges apart
6. The device according to any one of claims 1 or 2, when made of a resilient material.
7. The device according to any one of claims 1 or 2, wherein said obliquely outwardly pointing inner surface is a bevelled surface,
8, The device according to any one of claims 1 or 2 wherein said obliquely outwardly pointing inner surface is an outward relief surface,
9, The device according to any one of claims 1 or 2 wherein the flanges, at said rear end, are bevelled in a direction towards the forward end,
10, The device according to any one of claims 1 or 2 wherein the flanges, at said rear end, are inwardly or out-wardly bent,
11, The device according to any one of claims 1 or 2 wherein said rear end is designed as said forward end for forming a spike,
12, The device according to claim 1 wherein the straight profile is combined with a second straight profile,
13, The device according to claim 12, wherein the outer sides of the webs on the two profiles are fixedly inter-connected,
14, The device according to claim 12, wherein the inner sides of the webs on the two profiles face each other, and wherein the flanges on one profile are connected to the flanges on the rear end of the other profile,
15. The device according to any one of claims 1 or 2 wherein the straight profile is combined with a plurality of straight profiles which are spaced apart from each other in a transverse direction of each profile and are interconnected,
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA298,903A CA1107096A (en) | 1978-03-14 | 1978-03-14 | Fastening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA298,903A CA1107096A (en) | 1978-03-14 | 1978-03-14 | Fastening device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1107096A true CA1107096A (en) | 1981-08-18 |
Family
ID=4110992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA298,903A Expired CA1107096A (en) | 1978-03-14 | 1978-03-14 | Fastening device |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1107096A (en) |
-
1978
- 1978-03-14 CA CA298,903A patent/CA1107096A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |