NL2002641C2 - Hoisting system for wall panels having an assembly of flexible elongate hoisting elements and a carrier foot. - Google Patents

Hoisting system for wall panels having an assembly of flexible elongate hoisting elements and a carrier foot. Download PDF

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Publication number
NL2002641C2
NL2002641C2 NL2002641A NL2002641A NL2002641C2 NL 2002641 C2 NL2002641 C2 NL 2002641C2 NL 2002641 A NL2002641 A NL 2002641A NL 2002641 A NL2002641 A NL 2002641A NL 2002641 C2 NL2002641 C2 NL 2002641C2
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NL
Netherlands
Prior art keywords
hoisting
wall panel
flexible
foot
opening
Prior art date
Application number
NL2002641A
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Dutch (nl)
Inventor
Jan Hendrik Hamberg
Original Assignee
Calduran Kalkzandsteen B V
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Application filed by Calduran Kalkzandsteen B V filed Critical Calduran Kalkzandsteen B V
Priority to NL2002641A priority Critical patent/NL2002641C2/en
Application granted granted Critical
Publication of NL2002641C2 publication Critical patent/NL2002641C2/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
    • B66C1/16—Slings with load-engaging platforms or frameworks

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Description

P29695NL00/RR
Title: Hoisting system for wall panels having an assembly of flexible elongate hoisting elements and a carrier foot.
The invention relates to a hoisting system and method for placing a prefabricated wall panel in an upright position at an intended building location. In particular the invention relates to such a hoisting system and method for handling prefabricated wall panels built up out of a plurality of sand-lime stone building blocks.
5 For the handling of prefabricated wall panels several systems are known. For example DE-196 52 071 discloses a hoisting system according to the preamble of claim 1 in which a prefabricated wall panel is shown which at its lower side is provided with slit-shaped openings into which claws of claw carriers can grip. Each claw is connected to a vertical connection bar. Several of such claw carriers are provided next to one another and are hung 10 to a common hoisting beam. The hoisting beam hangs above the upper side of the wall panel and is connected to a hoisting device, like for example a crane.
A disadvantage with this known hoisting system is that a danger exists of one or more of the carrier claws accidentally sliding sideways out of their slit and thus (partly) loosening themselves from the wall panel too early. Furthermore the assembly of claw 15 carriers is somewhat difficult to remove after the wall panel has been placed at its correct end position. Furthermore the danger exists that the wall panel falls over to one side. In order to prevent this each claw carrier of DE-196 52 071 is equipped with an upper hook shaped element which is designed to grip over the upper edge of the wall panel. This hook shaped element however makes the system more expensive, heavy and difficult to handle, 20 in particular when the hook shaped element needs to be released by a worker at the end of the hoisting operation.
It is also known to prefabricate a wall panel with a plurality of integrated vertical reinforcement rods with hoisting hooks at their upper ends. A hoisting operation can then be performed by coupling these hooks to a hoisting device. The prefabricated wall panel for 25 example may be built up out of a plurality of building blocks, each block already having vertical channels spared out in it. The channels in those building blocks which are placed on top of each other need to be in line. Only then can the reinforcement rods be placed in these vertical channels, after which they are fixedly connected therewith, for example by embedding them in the channels with a curable substance like concrete.
30 A disadvantage with this known hoisting system is that the connection between the hoisting device and the reinforcement rods needs to be performed by a worker climbing up a stair to the upper side of the wall panel. For disconnecting the hoisting system the worker -2- needs to climb up a stair with the risk of falling or accidentally tilting or shifting the wall panel somewhat. Furthermore at the end of the hoisting operation the hooks need to be removed, for example by means of an angular grinder, from the outer ends of the reinforcement rods in order to no longer project from the upper side of the wall panel. During the prefabrication 5 of the wall panel, the placing of the reinforcement rods in the channels is not always easy, for example because the channels of the building blocks placed on top of each other, are not always fully aligned. On the other hand the provision of the channels in the building blocks may weaken the wall panel too much, particularly if the wall panel is relative thin.
From DE-298 14 291 another hoisting system is known with which a plurality of 10 steel strips are pre-tensioned around a prefabricated wall panel. These strips may then at the position of the upper side of the wall panel be directly connected to a hoisting device in order to perform a hoisting operation.
A disadvantage with this known system is that it is rather difficult to connect the highly pre-tensioned strips to a hoisting device. For this a worker again needs to climb up a 15 stair towards the upper side of the wall panel. Further, the pre-tensioned strips have the risk of breaking during a hoisting operation. This might be very dangerous for people standing near the wall because of the pre-tension in the strips which shoot away like a sharp projectile when breaking and thus may cause severe injuries. For the same reason it is rather difficult and dangerous to remove the strips at the end of the hoisting operation. Also 20 it is somewhat difficult to remove the strips from underneath the wall panel at the end of the hoisting operation since the wall panel is then standing on top of them. For this a lot of strength is required, again with the risk of someone hurting himself.
From DE 4406920 a wall panel is known which at its lower side comprises a mortal layer in which two U-shaped carrier elements are permanently positioned. Each U-shaped 25 carrier element delimits a gap through which a hoisting belt can be guided in such a way that it can extends as a downwardly hanging loop with two longitudinal parts alongside two opposite sides of the wall panel. During a hoisting operation the two longitudinal parts are hung to a hoisting crane at a position above an upper side of the wall panel.
A disadvantage with this known system is that the coupling and decoupling of the 30 two longitudinal parts of the hoisting belt to the hoisting crane need to be performed by a worker climbing two times up a stair, one for each respective longitudinal part at a particular side of the wall panel.
DE 598 730 shows a three part carrier organ comprising a horizontal carrier member with two upwardly projecting hoisting braces mounted hingedly thereto. The 35 horizontal carrier member can be placed underneath a gap provided at a lower side of a wall panel after which the hoisting braces can be connected with their lower ends to the carrier -3- member and with their upper ends to a hoisting crane at a position above an upper side of the wall panel.
Here also the disadvantage is that the coupling and decoupling of the two braces of the carrier organ to the hoisting crane need to be performed by a worker climbing two times 5 up a stair, one for each respective brace at a particular side of the wall panel. Another disadvantage is that a worker still needs to be present at both sides of the wall panel in order to be able to properly connect or disconnect the braces with the carrier member.
DE 296 15 648 U1 and DE 44 21 170 A1 shows a wall panel which at its lower side is provided with a plurality of carrier bolts extending transversely through the wall panel. At 10 both sides the carrier bolts are connected to a chain which chains at their upper ends are connected to a hoisting crane.
Here also the disadvantage is that the coupling and decoupling of the two chains to the hoisting crane need to be performed by a worker climbing two times up a stair, one for each respective chain at a particular side of the wall panel.
15 The present invention aims to at least partially overcome the above disadvantages and/or to provide a usable alternative. In particular the invention aims to provide a user-friendly and safe hoisting system and method for handling prefabricated wall panels.
This aim is achieved by a hoisting system according to claim 1. The system comprises a hoisting device, a carrier foot and two flexible elongate hoisting organs. The two 20 flexible elongate hoisting organs are destined to be hung at the hoisting device, for example to a hoisting hook thereof. The carrier foot comprises a rigid body with two connecting parts at its respective outer ends. Each connecting part serves the purpose of forming a proper connection with one of the flexible hoisting organs. During a hoisting operation the carrier foot can be placed centrally in a transverse opening which is provided at a lower side of a 25 prefabricated wall panel. Each flexible hoisting organ can then advantageously extend at a respective side of the wall panel between its connection part on the carrier foot and the hoisting device which is positioned somewhere above the wall panel. At least one of the two connections between the flexible hoisting organs and the connecting parts on the carrier foot is constructed with suitable release means. The carrier foot and transverse opening are 30 designed/manufactured with relative cross sectional dimensions such that the carrier foot can be placed and removed into and out of the transverse opening even when the wall panel is standing in an upright position.
During the hoisting operation both flexible hoisting organs advantageously are automatically tensioned as soon as the hoisting device exerts an upward pulling force 35 thereto. The flexible hoisting organs then automatically come to lie over a large part of their length against the respective opposite side faces of the wall panel. With this they offer -4- pressure forces against these opposite side faces of the wall panel and thus help to enlarge the integrity and in particular the transverse stability of the wall panel.
The hoisting system according to the invention advantageously makes it possible to easily and efficiently place a prefabricated wall panel. As soon as the wall panel is placed at 5 its intended building location, the hoisting device may be lowered sufficiently for the tension on the flexible hoisting organs to be released. The carrier foot can then be pulled entirely out of the opening towards one side of the wall panel. Then at least one of the two connections between the flexible hoisting organs and the carrier foot may be released by means of suitable release means. Preferably this is the connection between the carrier foot and the 10 back side flexible hoisting organ, that is to say the flexible hoisting organ which hangs on that side of the wall panel opposite the side where the worker is standing. After the disconnection has been made, the back side flexible hoisting organ can be pulled upwards and thus be pulled with its free end out of the transverse opening in the wall panel and over the upper side of the wall panel. This pulling upwards can advantageously be followed by 15 the hoisting device being manoeuvred such that both flexible hoisting organs come to lie at the front side of the wall panel, that is to say the side where the worker is standing and where the carrier foot initially was pulled towards.
This hoisting system and method according to the invention have the great advantage that for connecting and/or disconnecting of the hoisting system from the wall 20 panel at the beginning and/or end of a hoisting operation, the worker can stay on the ground and only needs to perform operations at one side of the wall panel. Stairs, scaffoldings or other temporary elevations are no longer necessary for the worker to perform these (dis)connection operations. This is both safer and more efficient for the worker. Furthermore the hoisting system is simple, cheap and easy to manufacture, and compact during storage 25 when not used. All parts of the system are more than enough lightweight in order for them to be handled manually.
In a particular embodiment the hoisting organs are formed by hoisting belts, in particular plastic fibre belts. They have the advantage of combining strength and lightweight, while at the same time offering a flat bearing against the side walls of the wall panel. Other 30 hoisting organs like chains, (steel) cables, or combinations thereof, however are also possible.
In a further embodiment the hoisting organs are each formed by an endless organ like an endless belt. This has the advantage that they are able to carry a lot of weight and that they do not necessarily need separate connection means for hooking them to the 35 connection parts on the carrier and/or to the hoisting device. Their loop shaped end parts are well suitable for this.
-5-
The connection between the flexible hoisting organs and the connecting parts on the carrier foot can be achieved in several ways. In a preferred embodiment the connecting part comprises a pen with which the flexible hoisting organ can be coupled. If the hoisting organ is formed by an endless belt or has a loop at its end, then this loop shaped end can easily 5 be slid over the pen.
The release means in at least one of the connections may be integrated in or provided on the flexible hoisting organ(s) or integrated in or provided on the connecting part(s) of the carrier foot. In the embodiment that the connecting part comprises a pen, this pen advantageously is constructed such that it is at least partially retractable from the carrier 10 foot after removal of a locking element. This immediately gives the freedom to slide the flexible hoisting organ over the pen after which the pen can be placed back again and locked in that position. Also this gives the freedom to release the connection with the flexible hoisting organ by pulling the pen out of for example the loop shaped end thereof or by sliding such a looped shaped end sideways of the pen.
15 In a further embodiment the rigid body of the carrier foot is plate shaped, in particular formed by a massive steel plate. This helps in minimizing the total weight of the foot while letting it have sufficient strength for being able to (help) carry the wall panel without deformation of the foot.
Preferably the carrier foot has a maximum height of 30 mm. This makes it possible to 20 only provide a relatively low transverse opening in the lower side of the prefabricated wall panel for the foot being able to be placed therein. The small opening has the advantage that it can easily be filled up with wall material after removal of the carrier foot and the rest of the hoisting system.
The foot preferably has dimensions such that when placed centrally in the transverse 25 opening, its connecting parts at least partially project sideways out of the opening. At the same time the foot preferably has dimensions such that its connecting parts only slightly project out of the transverse opening. This has the effect of the flexible hoisting organs lying against the side faces of the wall panel over substantially the entire height of the wall panel.
In another embodiment both connections between the hoisting organs and the 30 connecting parts on the carrier foot are made releasable. For example the carrier foot may be constructed with two releasable connecting parts, like the retractable pens. This has the advantage of being able to make the carrier foot symmetrical, giving flexibility to the user.
Further advantageous embodiments are stated in the subclaims.
35 The invention shall now be described in more detail with reference to the accompanying drawings, in which: -6-
Fig. 1 shows a schematic perspective view of an embodiment of the hoisting system according to the invention during a hoisting operation; and
Fig. 2 shows the carrier foot of fig. 1 in more detail.
5 In fig. 1 the entire hoisting system has been indicated with the reference numeral 1.
The system 1 comprises a front flexible band 2 and a back flexible band 3. The bands 2, 3 preferably are endless bands, but also may be formed by single bands which at its free ends is provided with loop shaped ends or other suitable connection means. Both are hooked with their upper ends around a hook 4 of a hoisting device. With their lower ends the bands 2, 3 10 are connected to a carrier foot 5. The carrier foot 5 is placed centrally in a transverse opening 6 which has been spared out over the entire cross section of a prefabricated wall panel 8 at the bottom side thereof.
As can be seen in fig. 2 the carrier foot 5 comprises a flat steel plate-shaped rigid body 9 which here has been substantially H-shaped such that at both opposite outer ends 15 cut-outs 10 are being formed. Further the carrier foot 5 comprises two pens 11. Each pen 11 has a thickened head part 12 on one side and is delimited by means of a locking element 13 on its other side. The pen 11 projects through two holes 15 in the body 9 and delimits its corresponding cut-out 10 at the outer side. After removal of the locking pin 13, the pen 11 can be retracted out at least partly such that one of the bands 2, 3 can be slid over it or 20 removed from it.
The body 9 has a length I which substantially corresponds to the thickness of the wall panel 8. Thus as can be seen in fig. 1, the bands 2, 3 come to lie tightly against the side faces of the wall panel 8.
The body 9 has a thickness which is slightly less than the height of the transverse 25 opening 6. Thus the carrier foot 5 can be easily placed into and removed from the transverse opening 6.
In fig. 1 two transverse openings 6, two assemblies of a carrier foot 5 and two sets of bands 2,3 connected thereto are provided. Thus it is possible to lift up the wall panel in a balanced way. If necessary, more transverse openings and assemblies of carrier foots and 30 sets of bands can be provided/used.
The wall panel 8 here has been prefabricated out of a plurality of sand-lime stone building blocks. These sand-lime stone building blocks together form a prefabricated wall panel which may for example weigh up to 4000-5000 kilograms. During handling of the sand-lime stone prefabricated wall panel, the bands of the hoisting system advantageously 35 help to maintain the integrity of the wall panel, both during transport of the wall panel as during placing of it in a proper upright position on a building location.
-7-
Besides the embodiments shown numerous variants are possible. For example the carrier foot can be shaped differently and/or manufactured out of a different material. Also other types of connecting parts can be provided on the foot. Instead of bands, other types of flexible hoisting organs can be used. The transverse opening in the wall panel can be a slit 5 in its lower side, but can also be formed by a through opening near its lower side. Instead of both connections being made releasable it is also possible to make only one of the hoisting organs releasable and to fixedly connect the other hoisting organ with their respective connecting parts on the carrier foot. Instead of a locking pin it is also possible to use another type of locking element.
10 Thus the invention advantageously provides a flexible hoisting system and method which is both safe for the user and at the same time helps in strengthening the wall panel during the critical phase of picking it up and placing it at an aimed site. This has proven to be very effective for sand-lime stone panels. Other types of prefabricated wall panels, like concrete wall panels, may however also be handled with the hoisting system according to 15 the invention.
20

Claims (10)

1. Hijssysteem voor het plaatsen van een geprefabriceerd wandpaneel op een bouwlocatie, in het bijzonder een geprefabriceerd kalkzandsteen wandpaneel, omvattende: 5. een hijsinrichting; en - draagmiddelen voor het dragen van het wandpaneel tijdens een hijsoperatie, waarbij de draagmiddelen een draagvoet omvatten die is ingericht om geplaatst te worden in een dwarsopening, die voorzien is aan een ondergelegen zijde van het wandpaneel, welke draagvoet verwijderbaar is uit de opening aan het einde van de hijsoperatie in de richting 10 van één zijde van het wandpaneel, waarbij het systeem verder twee flexibele langwerpige hijsorganen omvat die bestemd zijn om te worden opgehangen aan de hijsinrichting, en de draagvoet een stijf lichaam omvat met twee verbindingsdelen aan tegenover liggende zijden daarvan voor het vormen van verbindingen met de flexibele hijsorganen tijdens de 15 hijsoperatie op een zodanige wijze dat, met de draagvoet centraal in de opening geplaatst, elk flexibel hijsorgaan zich uitstrekt aan een respectieve zijde van het wandpaneel in de richting van de hijsinrichting aan een bovengelegen zijde van het wandpaneel, met het kenmerk dat, ten minste één van de twee verbindingen tussen de flexibele hijsorganen en de 20 verbindingsdelen op de draagvoet losmaakbaar is.A hoisting system for placing a prefabricated wall panel on a construction site, in particular a prefabricated sand-lime brick wall panel, comprising: 5. a hoisting device; and - support means for supporting the wall panel during a lifting operation, the support means comprising a support foot adapted to be placed in a transverse opening provided on a lower side of the wall panel, which support foot is removable from the opening on the wall. end of the lifting operation in the direction of one side of the wall panel, the system further comprising two flexible elongated lifting members which are intended to be suspended from the lifting device, and the supporting foot comprises a rigid body with two connecting parts on opposite sides thereof for forming connections with the flexible lifting members during the lifting operation in such a way that, with the supporting foot placed centrally in the opening, each flexible lifting member extends on a respective side of the wall panel in the direction of the lifting device on an upper side of the wall panel, characterized in that, at least one of the two flexible connections between the lifting members and the connection members 20 is on the support base detachable. 2. Hijssysteem volgens conclusie 1, waarbij de flexibele hijsorganen gevormd zijn door hijsbanden, in het bijzonder kunststof vezel versterkte banden.2. Hoisting system as claimed in claim 1, wherein the flexible hoisting members are formed by hoisting belts, in particular plastic fiber-reinforced belts. 3. Hijssysteem volgens conclusie 2, waarbij de hijsbanden elk gevormd zijn door een eindloze band.3. Hoisting system according to claim 2, wherein the hoisting belts are each formed by an endless belt. 4. Hijsinrichting volgens één van de voorgaande conclusies, waarbij het stijve lichaam van de draagvoet plaatvormig is, in het bijzonder gevormd uit een massieve staalplaat, en 30 meer in het bijzonder met een hoogte tussen 10-30 mm.4. Hoisting device as claimed in any of the foregoing claims, wherein the rigid body of the bearing foot is plate-shaped, in particular formed from a solid steel plate, and more particularly with a height between 10-30 mm. 5. Hijssysteem volgens één van de voorgaande conclusies, waarbij ten minste één van de verbindingsdelen op de draagvoet een pen omvat.A hoisting system according to any one of the preceding claims, wherein at least one of the connecting parts on the bearing foot comprises a pin. 6. Hijssysteem volgens conclusie 5, waarbij de pen uittrekbaar is uit de draagvoet na verwijdering van een grendelelement. -9-6. Hoisting system as claimed in claim 5, wherein the pin is extendable from the bearing foot after removal of a locking element. -9- 7. Hijssysteem volgens één van de voorgaande conclusies, waarbij beide verbindingen tussen de flexibele hijsorganen en de verbindingsdelen op de draagvoet losmaakbaar zijn.7. Hoisting system as claimed in any of the foregoing claims, wherein both connections between the flexible hoisting members and the connecting parts can be released on the supporting foot. 8. Werkwijze voor het plaatsen van een geprefabriceerd wandpaneel, in het bijzonder 5 een geprefabriceerd kalkzandsteen wandpaneel, gebruikmakend van een hijssysteem volgens één van de voorgaande conclusies, omvattende: - prefabriceren van het wandpaneel met de dwarsopening aan zijn ondergelegen zijde; - plaatsen van het stijve lichaam van de draagvoet centraal in de opening, met de twee flexibele hijsorganen verbonden met de verbindingsdelen van het stijve lichaam en zich 10 uitstrekkend aan respectieve zijden van het wandpaneel, en met de hijsinrichting gepositioneerd aan de bovengelegen zijde van het wandpaneel en verbonden met de twee flexibele hijsorganen; - aandrijven van de hijsinrichting teneinde het wandpaneel op te tillen terwijl het op de draagvoet rust; 15. positioneren van het wandpaneel op de bouwlocatie; - neerlating van de hijsinrichting zodanig dat de spanning op de flexibele hijsorganen ontlast wordt; - trekken van de draagvoet uit de opening in de richting van één zijde van het wandpaneel; - vrijmaken van ten minste één van de twee verbindingen tussen de flexibele hijsorganen en 20 de draagvoet; en - verwijderen van het hijssysteem van het wandpaneel.8. Method for placing a prefabricated wall panel, in particular a prefabricated sand-lime brick wall panel, using a hoisting system according to one of the preceding claims, comprising: - prefabricating the wall panel with the transverse opening on its lower side; - placing the rigid body of the supporting foot centrally in the opening, with the two flexible hoisting means connected to the connecting parts of the rigid body and extending on respective sides of the wall panel, and with the hoisting device positioned on the upper side of the wall panel and connected to the two flexible hoists; - driving the hoisting device in order to lift the wall panel while it rests on the supporting foot; 15. positioning the wall panel on the construction site; - lowering of the hoisting device such that the tension on the flexible hoisting elements is relieved; - pulling the supporting foot out of the opening in the direction of one side of the wall panel; - releasing at least one of the two connections between the flexible hoisting members and the bearing foot; and - removing the hoisting system from the wall panel. 9. Werkwijze volgens conclusie 8, waarbij de opening in het wandpaneel wordt opgevuld na verwijdering van de draagvoet. 25The method of claim 8, wherein the opening in the wall panel is filled after removal of the support foot. 25 10. Werkwijze volgens conclusie 8 of 9, waarbij het wandpaneel geprefabriceerd is met de opening aan zijn ondergelegen zijde voorzien van een hoogte tussen 10-30 mm. 30Method according to claim 8 or 9, wherein the wall panel is prefabricated with the opening on its lower side provided with a height between 10-30 mm. 30
NL2002641A 2009-03-19 2009-03-19 Hoisting system for wall panels having an assembly of flexible elongate hoisting elements and a carrier foot. NL2002641C2 (en)

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NL2002641A NL2002641C2 (en) 2009-03-19 2009-03-19 Hoisting system for wall panels having an assembly of flexible elongate hoisting elements and a carrier foot.
NL2002641 2009-03-19

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE598730C (en) * 1931-11-03 1934-06-16 Carl Ludowici K A A Construction process using components produced in the workshop
US2635912A (en) * 1951-06-06 1953-04-21 Andrew S Mackenzie Brick lifting apparatus
DE2734262A1 (en) * 1977-07-29 1979-02-08 Heinz Dipl Ing Borsdorf Prefabricated brick external building wall - has flat metal reinforcement embedded in horizontal joints
DE4406920A1 (en) * 1994-02-28 1995-08-31 Rolf Schoch Method of lifting and transporting prefabricated brick wall
DE4421170A1 (en) * 1994-06-20 1996-01-11 Gueteschutz Ziegelmontagebau E Prefabricated wall slab with transport bolts
DE29615648U1 (en) * 1996-09-07 1996-10-17 Baustoffwerke Durmersheim GmbH, 76448 Durmersheim Wall board made of single stones

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE598730C (en) * 1931-11-03 1934-06-16 Carl Ludowici K A A Construction process using components produced in the workshop
US2635912A (en) * 1951-06-06 1953-04-21 Andrew S Mackenzie Brick lifting apparatus
DE2734262A1 (en) * 1977-07-29 1979-02-08 Heinz Dipl Ing Borsdorf Prefabricated brick external building wall - has flat metal reinforcement embedded in horizontal joints
DE4406920A1 (en) * 1994-02-28 1995-08-31 Rolf Schoch Method of lifting and transporting prefabricated brick wall
DE4421170A1 (en) * 1994-06-20 1996-01-11 Gueteschutz Ziegelmontagebau E Prefabricated wall slab with transport bolts
DE29615648U1 (en) * 1996-09-07 1996-10-17 Baustoffwerke Durmersheim GmbH, 76448 Durmersheim Wall board made of single stones

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