GB2164503A - Cable ladder system - Google Patents
Cable ladder system Download PDFInfo
- Publication number
- GB2164503A GB2164503A GB08522407A GB8522407A GB2164503A GB 2164503 A GB2164503 A GB 2164503A GB 08522407 A GB08522407 A GB 08522407A GB 8522407 A GB8522407 A GB 8522407A GB 2164503 A GB2164503 A GB 2164503A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stringers
- kit
- parts
- cable
- rungs
- 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
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/06—Joints for connecting lengths of protective tubing or channels, to each other or to casings, e.g. to distribution boxes; Ensuring electrical continuity in the joint
- H02G3/0608—Joints for connecting non cylindrical conduits, e.g. channels
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0456—Ladders or other supports
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Ladders (AREA)
Abstract
A kit of parts for assembling a cable ladder system comprises straight cable ladder sections and a group of component parts (Fig. 1) differing from one another from selected component parts of which group can be assembled a plurality of multi-purpose couplings (Fig. 3 to 9) of at least two forms which differ from one another. The multi-purpose couplings are suitable for inter-connecting cable ladder sections together in such a way that the common planes of the support surfaces of their rungs are parallel to and lie in different planes from one another or lie at an angle to one another. The expense of providing especially manufactured cable ladder risers, T-connectors, cross-connectors etc is avoided. <IMAGE>
Description
SPECIFICATION
An improved cable ladder system
This invention relates to a cable ladder system of the kind built up of a multiplicity of ladder like structures for supporting electric cables and/or service pipes, which structures comprise a pair of elongate side members (generally and hereinafter referred to as "stringers") and, extending transversely between and secured to the stringers at spaced positions along their lengths, a plurality of elongate support members (generally and hereinafter referred to as "rungs").
It is the general practice to fabricate a cable ladder system of this kind from a multiplicity of ladder-like structures which includes ladder like structures in which the stringers are substantially straight and the support surfaces of the rungs lie in a substantially common plane and which includes coupling components such as bends for supporting electric cables and/or service pipes as the direction and/or plane in which they extend gradually changes, tee-connectors and cross-connectors, all such coupling components having, as common features, at least one pair of stringers inter-connected by mutually spaced transversely extending rungs.Whilst the fabrication of cable ladder systems of this kind using such coupling components enables a cable ladder system to be erected which is aesthetically pleasing, the necessity of providing specially manufactured tee-connectors, cross-connectors and other coupling components in order to accommodate for changes in direction and/or plane of electric cables and/or service pipes does constitute a substantial proportion of the total cost of the cable ladder system.
It is an object of the present invention to provide an improved kit of parts for use in the fabrication of a cable ladder system where the aesthetic pleasing appearance of the system is not of paramount importance.
According to the invention, the improved kit of parts comprises a plurality of cable ladders, each comprising a pair of substantially straight stringers and a plurality of rungs extending transversely between and secured to the stringers at spaced positions along their lengths with the support surfaces of the rungs lying in a common substantially flat plane, and a group of component parts differing from one another from selected component parts of which group can be assembled a plurality of multi-purpose couplings of at least twc forms which differ from one another, which multipurpose couplings are suitable for inter-connecting cable ladders together in such a way that the common planes of the support surfaces of their rungs are parallel to and lie in different planes from one another.
Preferably, the group of component parts from which the component parts of each multi-purpose coupling can be selected comprises a plurality of substantially straight bolts each having a head or nut at one end and a nut at the other end, a plurality of sleeves at least one of which can be slidably mounted on a bolt between said ends and, for slidably mounting on a bolt adjacent opposite ends of and separately formed with respect to a sleeve or at least one of a plurality of sleeves, a plurality of means for effecting engagement with the longitudinally extending edges of a stringer of a cable ladder, the arrangement being such that when said means of -a coupling assembled from component parts selected from said group are in engagement with the longitudinally extending edges of a stringer of a cable ladder and the nut or nuts is or are tightened, the coupling is clamped to the stringer.
Preferably, each means for effecting engagement with a longitudinally extending edge of a stringer comprises an elongate member having, at or near one of its ends, a hole to enable the member to be slidably mounted on a bolt and being, at or near the other of its ends, so shaped as to engage over or around a . longitudinally extending edge of a stringer.
The plurality of elongate members preferably includes a plurality of elongate members which are substantially greater in length than the other elongate members and, in this case, each longer elongate member may have, intermediate its ends, an upstanding shoulder or ridge for bearing against a stringer
The plurality of substantially straight bolts of the group of component parts preferably includes bolts of at least two lengths differing from one another.
To enable assembly from component parts of the group of multi-purpose couplings that can be so inter-connected that the planes of the support surfaces of the rungs of two cable ladders can be arranged to lie at an angle to one another, the group of component parts preferably also includes a plurality of sleeves for slidably mounting on a bolt, each of which sleeves has integral with or connected to the sleeve a radially outwardly extending flange having a plurality of holes for facilitating inter-connection by bolts to the radially outwardly extending flange of a similar flanged sleeve.
Preferably, the kit of parts also includes a plurality of separate lengths of angle, the sides of each angle being substantially at right angles to one another and each having, mutually spaced along its length, a plurality of holes for reception of the bolts of multi-purpose couplings.
The invention also includes a cable ladder system built up of a plurality of cable ladders, each comprising a pair of substantially straight stringers and a plurality of rungs extending transversely between and secured to the stringers at spaced positions along their lengths with the support surfaces of the rungs lying in a common substantially flat plane, wherein at least two of the cable ladders are inter-connected together in such a way that the common planes of the support surfaces of their rungs are parallel to and lie in different planes from one another or are inclined at an angle to one another by at least two multipurpose couplings, each of which is assembled from component parts selected from the group of component parts differing from one another as hereinbefore described.
The invention will be further illustrated by a description, by way of example, of a cable ladder system assembled using a preferred kit of parts and of the various arrangements in which cable ladders of the system are interconnected with the common planes of the supporting surfaces of their rungs parallel to and spaced from one another or inclined at an angle to one another, with reference to the accompanying drawings, in which::
Figures 1(a) to 1(g) illustrate component parts of multi-purpose couplings and Figure 1(h) illustrates a typical length of angle of the preferred kit of parts;
Figure 2 is a general view of the cable ladder system;
Figure 3 is a fragmental perspective view of stringers of two cable ladders interconnected with the common planes of the support surfaces of their rungs positioned one above and spaced from the other as shown at 3 in Figure 2;
Figure 4 is a fragmental perspective view of stringers of two cable ladders interconnected with the common planes of the support surfaces of their rungs lying in planes inclined at right angles to one another as shown at 4 in
Figure 2;;
Figure 5 is a fragmental perspective view of an alternative arrangement in which stringers of two cable ladders are interconnected with the common planes of the support surfaces of their rungs lying in planes inclined at right angles to one another as shown at 5 in Figure 2;
Figure 6 is a fragmental perspective view of a further alternative arrangement in which stringers of two cable ladders are interconnected with the common planes of the support surfaces of their rungs lying in planes inclined at right angles to one another as shown at 6 in Figure 2;
Figure 7 is a fragmental perspective view of stringers of two cable ladders interconnected with the common planes of the support surfaces of their rungs inclined at an obtuse angle to one another as shown at 7 in Figure 2;;
Figure 8 is a fragmental side view of stringers of two cable ladders interconnected with the common planes of the support surfaces of their rungs inclined at right angles to one another as shown at 8 in Figure 2; and
Figure 9 is a fragmental side view of stringers of two cable ladders interconnected with the support surfaces of their rungs lying in a single common plane, the direction in which electric cables and/or pipes supported on the support surfaces extend gradually changing as shown at 9 in Figure 2.
Referring to the drawings, Figures 1(a) to (g) illustrate the component parts that can be used in the assembly of the various forms of multi-purpose coupling.
Figures 1 (a) and (b) illustrate two bolts 11, 12 of different lengths from one another, each of which can be employed in a multi-purpose coupling; Figure 1(c) illustrates a sleeve 13 for slidably mounting on the bolt of a coupling;
Figures 1(d) and (e) illustrate the elongate members 14, 18 for slidably mounting on the bolt of a coupling adjacent opposite ends of the sleeve.Member 24 is shaped at one of its ends to form a hook 15 for engaging around a longitudinally extending edge of a stringer, has an upstanding ridge 16 intermediate of its ends for bearing against a stringer and has an aperture 17 for slidably mounting the member on a bolt, and member 18 is shaped at one of its ends to form a flange 19 for engaging over a longitudinally extending edge of a stringer and an aperture 20 for slidably mounting the member on a bolt; and Figure (f) illustrates a sleeve 21 with an integral radially outwardly extending apertured flange 22 for slidably mounting on the bolt of a coupling.
Figure 1 (9) illustrates a typical bolt 24 employed in interconnecting the apertured flanges 22 of the sleeves 21 of two multi-purpose couplings.
Figure 1(h) illustrates one length of apertured angle of a plurality of lengths of apertured angle included in the preferred kit of parts.
Figure 2 shows a typical cable ladder system in which cable ladders are interconnected in six arrangements, each of which is different from the other five arrangements.
In the arrangement indicated by reference 3 in Figure 2, two cable ladders 31, 32 are so arranged that one overlies the other with the stringers 31', 32' of the two cable ladders at right angles to one another and with the common planes of the supporting surfaces of their rungs substantially parallel. At each of the four positions of intersection of the stringers 31', 32' of the two cable ladders 31, 32, the two stringers are clamped together by one form of the multi-purpose coupling assembled from the component parts illustrated in Figures 1(a) and (c) to (e). As will be seen on referring to
Figure 3, at each of these four positions, the multi-purpose coupling comprises the bolt 11 illustrated in Figure 1(a) on which are slidably mounted two sleeves 13 as illustrated in Figure 1(c) and, adjacent opposite ends of each sleeve, elongate members 14, 18 as illustrated in Figures 1(d) and (e). The elongate members 14, 18 associated with one sleeve 13 engage the longitudinally extending edges 31' of one stringer 31 and the elongate members 14, 18 associated with the other sleeve 13 engage the longitudinally extending edges 32' of the other stringer 32, the nuts on the bolt 11 being tightened to clamp the two stringers 31, 32 rigidly together.
In the arrangement indicated by reference 4 in Figure 2, cable ladder 33 is clamped by multi-purpose couplings assembled from component parts as illustrated in Figures 1(b) and (d) to (f) against the outer side face of one stringer 31' of the other cable ladder 31 with the stringers of the two cable ladders at right angles to one another and with the common planes of the supporting surfaces of the- rungs of the two cable ladders at right angles to one another.As will be seen with reference to Figure 4, in this case at each of the two positions at which clamping occurs there is clamped to each of the stringers 31', 33' a multi-purpose coupling comprising a bolt 12 as illustrated in Figure 1(b), a sleeve 21 with integral apertured flange 22 as illustrated in
Figure 1(f) and, at opposite ends of this sleeve, elongate elements 14, 18 as illustrated in Figures 1(d) and (e) which engage the longitudinally extending edges of the stringer, the nut on the bolt 12 being tightened to clamp the coupling to the stringer. The apertured flanges 22 of the two multi-purpose couplings overlap and are bolted together by bolts 24 as illustrated in Figures 1(g) to clamp the two stringers 31', 33' firmly together.
In the arrangement indicated by reference 5 in Figure 2, the ends of the stringers 35' of cable ladder 35 substantially abut a stringer 34' of cable ladder 34 and are clamped thereto by a combination of a length of apertured angle 26 as illustrated in Figure 1(h), and two multi-purpose couplings assembled from component parts as illustrated in Figures 1(b) to (e), the stringers of one cable ladder being at right angles to the stringers of the other cable ladder and the common planes of the supporting surfaces of the rungs of the two ladders also being at right angles to one another.As will be seen in Figure 5, in this case a length of apertured angle 26 as illustrated in Figure 1(h) is clamped over the ends of the stringers 35' of the first cable ladder 35 by two multi-purpose couplings each comprising a bolt 12 as illustrated in 1(b), a sleeve 13 as illustrated in 1(c) and, at opposite ends of the sleeve, elongate elements 14, 18 as illustrated in 1(d) and (e), which engage one side 27 of the angle. The other side 28 of the angle 26 is clamped firmly to the stringer 34' of the other cable ladder 34 by two longitudinally spaced multi-purpose couplings of the same construction as the multipurpose couplings clamping the length of angle to the stringers 35' of cable ladder 35.
In the arrangement indicated by reference 6 in Figure 2, the ends of the stringers 32' of cable ladder substantially abut and are firmly clamped by multi-purpose couplings identical to those used in the arrangement illustrated in
Figure 4 to the stringers 34 of cable ladder 34 with the stringers of the cable ladders at right angles to one another and with the common planes of the supporting surfaces of the rungs of the two cable ladders also at right angles to one another.As will be seen on referring to Figure 6, a multi-purpose coupling is clamped to each of the stringers 32', 34', and at each position where the end of a stringer 32 of cable ladder 32 abuts a stringer 34 of cable ladder 34, the apertured flanges 22 of the multi-purpose coupling are bolted together to clamp one cable ladder firmly to the other.
In the arrangement indicated by reference 7 in Figure 2, the ends of the stringers 36 of cable ladder 36 are firmly clamped to one stringer 31' of cable ladder 31 in such a way that the stringers 36 of the cable ladder 36 are at right angles to the stringers 31 of cable ladder 31 and the common plane of the supporting surfaces of the rungs of cable ladder 36 is inclined at an obtuse angle to the common plane of the supporting surfaces of the rungs of cable ladder 31.As will be seen on referring to Figure 7, in this case, each stringer 36 of cable ladder 36 has attached to its end a multi-purpose coupling of the kind used in the arrangement illustrated in Figure 4 and each stringer 31' of cable ladder 31 also has firmly secured to it a multi-purpose coupling of the kind employed in the arrangement illustrated in Figure 4. The apertured flanges 22 of the two multi-purpose couplings are so bolted together that the common planes of the supporting surfaces of the rungs of the two ladders 31, 36 are inclined to one another at the required angle.
In the method indicated by reference 8 in
Figure 2, cable ladder 31 is secured to a cable ladder 37 of greater width with the stringers 31 of cable ladder 31 at right angles to the stringers 37 of cable ladder 37 and with the common planes of the supporting surfaces of the rungs of cable ladder 31 at right angles to the common plane of the supporting surfaces of the rungs of cable ladder 37.As will be seen on referring to Figure 8, a length of apertured angle 26 as illustrated in
Figure 1(h) is firmly clamped to the stringers 37 of cable ladder 37 by two multi-purpose couplings of the kind used in the arrangement illustrated in Figure 5 and the ends of the stringers of cable ladder 31 are firmly clamped to the length of apertured angle 26 by two multi-purpose couplings of the kind employed in the arrangement illustrated in Figure 5.
As is illustrated in Figure 2 at reference 9, multi-purpose couplings of the kind employed in the arrangement illustrated in Figure 4 can be employed to interconnect between the ends of two lengths of cable ladder 32, 38 arranged with the supporting surfaces of their rungs in a substantially common plane a supplementary cable ladder 39 in which one stringer 39' is greater in length than the other.
By so doing, the direction of an electric cable and/or service pipe supported on the interconnected lengths of cable ladder can be changed. The manner in which the two multipurpose couplings are employed is clearly illustrated in Figure 9, the length of gap between the end faces of two adjacent stringers 32', 39' or 38', 39', and hence the extent of the change in direction of any supported electric cable and/or service pipe, being determined by the positions at which the multipurpose couplings are clamped to the stringers.
Claims (12)
1. A kit of parts for use in the fabrication of a cable ladder system comprising a plurality of cable ladders, each comprising a pair of substantially, straight stringers and a plurality of rungs extending transversely between and secured to the stringers at spaced positions along their lengths with the support surfaces of the rungs lying in a common substantially flat plane, and a group of component parts differing from one another from selected component parts of which group can be assembled a plurality of multi-purpose couplings of at least two forms which differ from one another, which multi-purpose couplings are suitable for inter-connecting cable ladders together in such a way that the common planes of the support surfaces of their rungs are parallel to and lie in different planes from one another.
2. A kit of parts as claimed in Claim 1, wherein the group of component parts comprises a plurality of substantially straight bolts each having a head or nut at one end and a nut at the other end, a plurality of sleeves at least one of which can be slidably mounted on a bolt between said ends and, for slidably mounting on a bolt adjacent opposite ends of and separately formed with respect to a sleeve or at least one of a plurality of sleeves, means for effecting engagement with the longitudinally extending edges of a stringer of a cable ladder, the arrangement being such that when said means of a coupling assembled from component parts selected from said group are in engagement with the longitudinally extending edges of a stringer of a cable ladder and the nut or nuts is or are tightened, the coupling is clamped to the stringer.
3. A kit of parts as claimed in Claim 2, wherein each means for effecting engagement with a longitudinally extending edge of a stringer comprises an elongate member having, at or near one of its ends, a hole to enable the member to be slidably mounted on a bolt and being, at or near the other of its ends, so shaped as to engage over or around a longitudinally extending edge of a stringer.
4. A kit of parts as claimed in Claim 3, wherein the plurality of elongate members includes a plurality of elongate members which are substantially greater in length than the other elongate members.
5. A kit of parts as claimed in Claim 4, wherein each longer elongate member has, intermediate its ends, an upstanding shoulder or ridge for bearing against a stringer.
6. A kit of parts as claimed in any one of
Claims 2 to 5, wherein the plurality of substantially straight bolts include bolts of at least two lengths differing from one another.
7. A kit of parts as claimed in any one of
Claims 2 to 6, wherein the group of component parts also includes a plurality of sleeves for slidably mounting on a bolt, each of which has integral with or connected to the sleeve a radially outwardly extending flange having a plurality of holes for facilitating inter-connection by bolts to the radially outwardly extending flange of a similar flanged sleeve.
8. A kit of parts as claimed in any one of the preceding Claims, wherein the kit also includes a plurality of separate lengths of angle, the sides of each angle being substantially at right angles to one another and each having, mutually spaced along its length, a plurality of holes for reception of the bolts of multi-purpose couplings.
9. A kit of parts as claimed in any one of the preceding Claims, wherein the kit also includes at least one supplementary cable ladder comprising a pair of substantially straight stringers and at least one rung extending transversely between and secured to the stringers, one stringer of the supplementary cable ladder being greater in length than the other.
10. A cable ladder system built up of a plurality of cable ladders, each comprising a pair of substantially straight stringers and a plurality of rungs extending transversely between and secured to the stringers at at spaced positions along their lengths with the support surfaces of the rungs lying in a common substantially flat plane, wherein at least two of the cable ladders are inter-connected together in such a way that the common planes of the support surfaces of their rungs are parallel to and lie in different planes from one another or are inclined at an angle to one another by at least two multi-purpose couplings, each of which is assembled from component parts selected from the group of component parts differing from one another of the kit of parts claimed in any one of the preceding Claims.
11. A kit of parts for use in the fabrication of a cable ladder system comprising a plurality of cable ladders, each comprising a pair of substantially straight stringers and a plurality of rungs extending transversely between and secured to the stringers at spaced positions along their lengths with the support surfaces of the rungs lying in a common substantially flat plane, and a group of component parts comprising a plurality of each of the component parts as hereinbefore described with ref
erence to and as shown in Figure 1(a) to (h)
of the accompanying drawings.
12. A cable ladder system built up of a plurality of cable ladders, each comprising a pair of substantially straight stringers and a plurality of rungs extending transversely between and secured to the stringers at spaced positions along their lengths with the support surfaces of the rungs lying in a common sub
stantially flat plane, wherein at least two of
the cable ladders are inter-connected together
substantially as hereinbefore described with
reference and as shown in Figure 2 and any
one of Figures 3 to 9 of the accompanying
drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB848423080A GB8423080D0 (en) | 1984-09-12 | 1984-09-12 | Cable ladder system |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8522407D0 GB8522407D0 (en) | 1985-10-16 |
| GB2164503A true GB2164503A (en) | 1986-03-19 |
| GB2164503B GB2164503B (en) | 1988-02-03 |
Family
ID=10566636
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB848423080A Pending GB8423080D0 (en) | 1984-09-12 | 1984-09-12 | Cable ladder system |
| GB08522407A Expired GB2164503B (en) | 1984-09-12 | 1985-09-10 | Cable ladder system |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB848423080A Pending GB8423080D0 (en) | 1984-09-12 | 1984-09-12 | Cable ladder system |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB8423080D0 (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB289855A (en) * | 1927-05-04 | 1928-10-04 | The A.C. Gilbert Company | |
| GB329367A (en) * | 1929-02-15 | 1930-05-15 | Automatic Telephone Mfg Co Ltd | Improvements in or relating to supporting arrangements for electric conductors |
| GB307464A (en) * | 1928-03-08 | 1930-07-07 | Gilbert Co A C | Improvements in or relating to containers for constructional toys |
| GB395129A (en) * | 1931-05-11 | 1933-07-13 | Eduard Hoffmann | Improvements in constructional toys |
| GB408924A (en) * | 1932-07-11 | 1934-04-19 | Karl Bub | Metal building-box for iron constructions |
| GB415250A (en) * | 1933-07-12 | 1934-08-23 | Georg Kellner | Improvements in or relating to junctions or connections for use in the assembly of perforated strips and the like |
| NL7412503A (en) * | 1974-09-23 | 1976-03-25 | Kempenland B V | Cable duct frame with plate shaped coupling brackets at end - has lip engaged and folded in wall clamped by fold in wall after making cut out |
| GB2038109A (en) * | 1978-11-24 | 1980-07-16 | Cable Supports Ltd | Improvements in or relating to cable ladders |
| GB2049450A (en) * | 1979-05-11 | 1980-12-31 | Fischer Artur | Toy construction kits |
| GB2067851A (en) * | 1980-01-17 | 1981-07-30 | Raceway Systems Pty Ltd | Means for mounting cables or the like |
-
1984
- 1984-09-12 GB GB848423080A patent/GB8423080D0/en active Pending
-
1985
- 1985-09-10 GB GB08522407A patent/GB2164503B/en not_active Expired
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB289855A (en) * | 1927-05-04 | 1928-10-04 | The A.C. Gilbert Company | |
| GB307464A (en) * | 1928-03-08 | 1930-07-07 | Gilbert Co A C | Improvements in or relating to containers for constructional toys |
| GB329367A (en) * | 1929-02-15 | 1930-05-15 | Automatic Telephone Mfg Co Ltd | Improvements in or relating to supporting arrangements for electric conductors |
| GB395129A (en) * | 1931-05-11 | 1933-07-13 | Eduard Hoffmann | Improvements in constructional toys |
| GB408924A (en) * | 1932-07-11 | 1934-04-19 | Karl Bub | Metal building-box for iron constructions |
| GB415250A (en) * | 1933-07-12 | 1934-08-23 | Georg Kellner | Improvements in or relating to junctions or connections for use in the assembly of perforated strips and the like |
| NL7412503A (en) * | 1974-09-23 | 1976-03-25 | Kempenland B V | Cable duct frame with plate shaped coupling brackets at end - has lip engaged and folded in wall clamped by fold in wall after making cut out |
| GB2038109A (en) * | 1978-11-24 | 1980-07-16 | Cable Supports Ltd | Improvements in or relating to cable ladders |
| GB2049450A (en) * | 1979-05-11 | 1980-12-31 | Fischer Artur | Toy construction kits |
| GB2067851A (en) * | 1980-01-17 | 1981-07-30 | Raceway Systems Pty Ltd | Means for mounting cables or the like |
Non-Patent Citations (1)
| Title |
|---|
| WIBE CATALOGUE - CABLE SUPPORT SYSTEM, CABLE LADDERS, 1984, PP 22 TO 25 * |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2164503B (en) | 1988-02-03 |
| GB8522407D0 (en) | 1985-10-16 |
| GB8423080D0 (en) | 1984-10-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19960910 |