US20100024347A1 - Clamp - Google Patents
Clamp Download PDFInfo
- Publication number
- US20100024347A1 US20100024347A1 US12/309,050 US30905007A US2010024347A1 US 20100024347 A1 US20100024347 A1 US 20100024347A1 US 30905007 A US30905007 A US 30905007A US 2010024347 A1 US2010024347 A1 US 2010024347A1
- Authority
- US
- United States
- Prior art keywords
- clamp
- shaft
- clamp surface
- floor slab
- arm
- 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.)
- Abandoned
Links
- 238000000034 method Methods 0.000 claims abstract description 27
- 239000004568 cement Substances 0.000 claims 3
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- 238000010276 construction Methods 0.000 description 5
- 230000001934 delay Effects 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000010420 art technique Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 238000009408 flooring Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/0056—Means for inserting the elements into the mould or supporting them in the mould
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/88—Curtain walls
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/18—Adjusting tools; Templates
- E04G21/1841—Means for positioning building parts or elements
- E04G21/185—Means for positioning building parts or elements for anchoring elements or elements to be incorporated in the structure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B2/00—Friction-grip releasable fastenings
- F16B2/02—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening
- F16B2/06—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action
- F16B2/12—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action using sliding jaws
Definitions
- any suitable clamping arrangement may be employed.
- the second clamp surface could be fixed in position, and the first clamp surface moveable.
- both clamp surfaces could be moveable relative to one another, so long as the movement is releasably fixable (i.e. the positioning of the clamp surfaces can be fixed, but is not permanent and can be changed).
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Electromagnetism (AREA)
- Physics & Mathematics (AREA)
- Load-Bearing And Curtain Walls (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
- Jigs For Machine Tools (AREA)
Abstract
According to an aspect of the present invention, there is provided. A clamping apparatus, comprising: a first clamp provided with: a first clamp surface; a second clamp surface; and a substantially straight shaft, the first clamp surface and second clamp surface being arranged to be moveable relative to each other along the shaft to clamp an object between the first clamp surface and the second clamp surface, at least one of the clamp surfaces being releasably fixable, and a second clamp provided on an arm which extends from the second clamp surface, the arm extending in a direction substantially perpendicular to the shaft. According to another aspect of the present invention, there is provided a method of using the clamp.
Description
- The present invention relates to a clamp and a method of using that clamp.
- For many years, the application of a facade to a newly constructed building was undertaken using scaffolding. Scaffolding would be erected around the newly constructed building, and workers would use the scaffolding to reach appropriate places around the external surface of the new building to apply (or complete) the facade. However, in more recent times, the use of scaffolding to apply a facade to a newly constructed building (or to refurbish and existing building) has been replaced with a technique known as curtain-walling. Whereas in the use of scaffolding the facade is applied from the outside of the building, using curtain-walling the facade may be applied from the inside of the building and supported from the floors of the building. Curtain-walling has become more popular in recent years due to the increased height of newly constructed buildings, as well as the lack of space around newly constructed buildings in densely populated areas, both of which make the use of scaffolding more difficult.
- Although curtain-walling is becoming a more popular technique with which to apply a facade to a building, the methods and apparatus used to carry out curtain-walling can be improved. For example, the use of curtain-walling to apply a facade to a building requires the accurate location and alignment of substantially U-shaped channels (often referred to in the industry as Halfen channels, and generally referred to as fixing channels). Current techniques used to locate and align these U-shaped channels are not satisfactory, and can result in misalignment. If the U-shaped channels are misaligned, it is difficult or impossible to apply a facade to the building using these channels. It is often necessary to realign these U-shaped channels so that the facade can be applied to the building using the channels. Realignment of the channels may involve time consuming excavation of the channels from concrete. The time taken to realign these channels can increase the cost of the building, as well as incurring delays in the construction of the building which can incur further costs.
- It is therefore an object of the present invention to obviate or mitigate at least some of the disadvantages mentioned above.
- According to a first aspect of the present invention there is provided a clamping apparatus, comprising: a first clamp provided with: a first clamp surface; a second clamp surface; and a substantially straight shaft, the first clamp surface and second clamp surface being arranged to be moveable relative to each other along the shaft to clamp an object between the first clamp surface and the second clamp surface, at least one of the clamp surfaces being releasably fixable, and a second clamp provided on an arm which extends from the second clamp surface, the arm extending in a direction substantially perpendicular to the shaft.
- According to second aspect of the present invention there is provided a method of clamping a fixing channel in position relative to a floor slab sub structure, comprising: moving at least one of a first clamp surface and a second clamp surface of a first clamp along a substantially straight shaft, and releasably fixing the at least one clamp surface to clamp between the first clamp surface and the second clamp surface the floor slab sub structure and an upstand extending from the floor slab sub structure; using a second clamp which is attached to the first clamp to clamp the fixing channel so that the fixing channel is parallel to the floor slab sub structure and in a position substantially perpendicular to and away from the shaft.
- An embodiment of the present invention will now be described by way of example only with reference to the accompanying drawings, in which:
-
FIG. 1 depicts a construction technique using scaffolding; -
FIG. 2 depicts a construction technique using curtain-walling; -
FIGS. 3 a to 3 c depict a method used to apply curtain-walling to a building; -
FIGS. 4 a to 4 c illustrate problems with prior art curtain-walling methods and apparatus; -
FIG. 5 illustrates a clamp according to an embodiment of the present invention; and -
FIG. 6 a to 6 d illustrate use of the clamp ofFIG. 5 . - The above mentioned figures have not been drawn to scale. Identical features have been given identical reference numbers throughout the figures.
-
FIG. 1 depicts a newly constructedbuilding 1 having a plurality offloors 2. Erected around the outside of thebuilding 1 isscaffolding 3. Thescaffolding 3 is used by, for example, builders to apply a facade to thebuilding 1. - The use of scaffolding is not always desirable. If the building is of a certain height, the use of scaffolding may not be appropriate or even safe. Furthermore, if space around the building is restricted, the use of scaffolding may not be possible. Thus, the use of curtain-walling in recent years has become more popular.
-
FIG. 2 illustrates the basics of curtain-walling.FIG. 2 illustrates part of abuilding 1, which has a plurality offloors 2. Two curtain-wallingsections 4 are also shown. The curtain-wallingsections 4 are suspended from and attached to theflooring 2 of thebuilding 1. The exact fixing mechanisms are not shown inFIG. 2 . It will be appreciated that the curtain-wallingsections 4 may be glazing, cladding, etc. Because the curtain-wallingsections 4 are attached to and suspended from thefloors 2 of the building, the curtain-wallingsections 4 may be attached without the use of scaffolding. The curtain-walling sections may be lifted into position by crane and attached to thebuilding 1 by workers working on the inside of thebuilding 1. Alternatively, the curtain-wallingsections 4 may be delivered to the fixing points at the outer surfaces of thebuilding 1 from within the building itself 1. - A typical apparatus and method for fixing the curtain-walling to the sides of buildings is shown in
FIGS. 3 a to 3 c. Shown inFIG. 3 a is a floorslab sub structure 2 of a building (the building is not shown in the Figure). Anupstand 5 is fixed to the floorslab sub structure 2. Theupstand 5 is positioned adjacent to the outer edge of the building, and is used to restrict the flow of concrete used later in the method. Acorrugated structure 6 is located on top of the floorslab sub structure 2. Thecorrugated structure 6 may be used to provide support soffit for the new concrete floors of the building, or even to provide reinforcement to the floors. Located above thecorrugated structure 6 is a layer ofmetal mesh 7. Themetal mesh 7 is positioned such that it is substantially parallel to the floorslab sub structure 2. An elongate substantiallyU-shaped channel 8 is fixed to themesh 7 by way offixings 9. Although the elongation of the substantiallyU-shaped channel 8 cannot be directly seen fromFIG. 3 a, theU-shaped channel 8 is elongate in that it extends into and out of the page containingFIG. 3 a (and all Figures illustrating the U-shaped channel 8). Thefixings 9 are positioned such that the top of theU-shaped channel 8 is level with the upper point of the upstand 5 (i.e. the U-shaped channel is parallel and level with respect to the floor slab sub structure 2). - It can be seen from the Figure that the substantially
U-shaped channel 8 is not exactly U-shaped, but has inwardly facing lips. The lips are used to prevent a fixing element from moving out of the channel when the fixing element has been appropriately positioned in the channel (as described below). The substantiallyU-shaped channel 8 is abbreviated to ‘U-shaped channel’ hereafter. - Once the construction of
FIG. 3 a has been completed, concrete 10 is poured through themetal mesh 7 up to the level of the top of theupstand 5 and the top of theU-shaped channel 8. The concrete 10 is allowed to set such that theU-shaped channel 8 is fixed in position. TheU-shaped channel 8 then acts as a fixing channel for additional structures. In this case, the additional structures are curtain-walling sections (or brackets for curtain walling sections). -
FIG. 3 c shows how a curtain-walling section 4 may be fixed in position relative to the floorslab sub structure 2 of the building. Abracket 11 is fixed to theU-shaped channel 8 by passing through thebracket 11 anelongate fastener 12 which is initially aligned parallel to the length of theU-shaped channel 8. Theelongate fastener 12 may then be rotated such that it extends across the width of the U-shaped channel (i.e. perpendicular to its length), such that it cannot be removed from the U-shaped channel (i.e. the lips of the channel prevent removal of the elongate fastener). Thebracket 11 may then be fixed in position by securing the elongate fastener by way of anut 13. - The
bracket 11 is of a sufficient length to overhang the side of the building and the floorslab sub structure 2. The curtain-walling section 4 may be attached to the bracket, and therefore suspended from the floorslab sub structure 2, by attaching the curtain-walling section 4 to thebracket 11. The curtain-walling section can be attached to thebracket 11 by way of a conventional nut andbolt arrangement 14. -
FIG. 3 c shows how the curtain-walling section 4 may be satisfactorily suspended from a floorslab sub structure 2 of a building in order to clad a building. However, the method and apparatus described with reference toFIGS. 3 a to 3 c has at least one serious deficiency. This deficiency is illustrated inFIGS. 4 a to 4 c. -
FIG. 4 a is generally the same asFIG. 3 a. However, inFIG. 4 a a worker has stepped onto themetal mesh 7 causing it to deform, i.e. the metal mesh is no longer horizontal and parallel to the floorslab sub structure 2. A worker'sboot 15 is illustrated inFIG. 4 a as an aid to understanding one of the possible causes of the deformation of themetal mesh 7. It can be seen fromFIG. 4 a that due to the deformation of themetal mesh 7, theU-shaped channel 8 is no longer level with the floorslab sub structure 2, but is slightly tilted (i.e. misaligned). - The misaligned
U-shaped channel 8 is fixed in position when concrete 10 is poured in and around the U-shaped channel and allowed to set. The actual pouring of the concrete can cause further misalignment of theU-shaped channel 8. -
FIG. 4 c illustrates the theoretical situation that would arise if the curtain-walling section 4 was fixed in position relative to the floorslab sub structure 2 and misalignedU-shaped channel 8 as described in relation toFIG. 3 c. It can be seen inFIG. 4 c that due to the misalignment of theU-shaped channel 8, the curtain-walling section 4 is not parallel to the sides of theupstand 5, and that it is not parallel to the side of the building. If the curtain-wallingsections 4 are not parallel to the sides of the building, there could be a number of undesirable consequences. For example, the curtain-walling sections may give the building an appearance which is not aesthetically pleasing. More importantly perhaps, the misalignment of the curtain-wallingsections 4 may reduce the insulation on the building or even its structural integrity. Furthermore, if the curtain-wallingsections 4 were aligned as shown inFIG. 4 c, a large amount of stress and strain may be induced in thebracket 11 and parts connecting thebracket 11 to the curtain-walling section 4 andU-shaped element 8. These stresses and strains may eventually cause the curtain-walling section 4 to come loose, or at least damage the concrete 10 surrounding theU-shaped element 8 which can also reduce the structural integrity of the building. - Although in theory the problems described in relation to
FIG. 4 c are possible, in practice most builders would not attempt to fix the curtain-walling section 4 to theU-shaped channel 8 when or if they noticed that theU-shaped channel 8 was not aligned correctly. A more likely scenario would be that the builders would have to chip away at the concrete 10 surrounding theU-shaped channel 8 in order to realign it and reset it in a correct position. Whereas this course of action would ensure that the structural integrity of the building was not compromised (as described earlier) realigning theU-shaped channel 8 may take a considerable amount of time (e.g. 45 mins to 1 hour). Any delay in the construction of the curtain-walling sections may have knock on delays for other contractors, for example electricians and decorators wishing to commence work on the interior of the building. Such delays can incur significant expense. It is desirable to avoid these delays and consequential expense. -
FIG. 5 illustrates aclamping apparatus 20 in accordance with an embodiment of the present invention. The clampingapparatus 20 is provided with two clamps. A first clamp is arranged to clamp around the floorslab sub structure 2 andupstand 5 illustrated inFIGS. 3 and 4 . The first clamp comprises afirst clamp surface 21 and an opposablesecond clamp surface 22. Thefirst clamp surface 21 is fixed in position, whereas thesecond clamp surface 22 is moveable relative to thefirst clamp surface 21 along a threadedshaft 23 which extends from thefirst clamp surface 21 and through thesecond clamp surface 22. Awing nut 24 is provided adjacent to thesecond clamp surface 22, and is rotatable about the threadedshaft 23 to secure theclamping apparatus 20 on an object (e.g. the floor slab ofFIGS. 3 and 4 ). Any suitable clamping arrangement may be employed. For example, the second clamp surface could be fixed in position, and the first clamp surface moveable. Alternatively, both clamp surfaces could be moveable relative to one another, so long as the movement is releasably fixable (i.e. the positioning of the clamp surfaces can be fixed, but is not permanent and can be changed). - The clamping
apparatus 20 is provided with aguide rail 25. Theguide rail 25 extends from thesecond clamp surface 22 towards and through thefirst clamp surface 21. Theguide rail 25 makes the clampingapparatus 20 more rigid. - The
second clamp surface 22 is provided with anelongate arm 26. Theelongate arm 26 extends away from the threadedshaft 23 and is substantially perpendicular to the threadedshaft 23. Provided on theelongate arm 26 is a second clamp. The second clamp is provided with an elongate fixingelement 12. The elongate fixingelement 12 is provided with a threadedshaft 27 that extends through theelongate arm 26. The threadedshaft 27 and elongate fixingelement 12 are fixed in position by awing nut 28. Thewing nut 28 can be tightened to clamp the elongate fixingelement 12 in position. An object can be clamped between the elongate fixingelement 12 and theelongate arm 26. - When not fixed in position by the
wing nut 28, the elongate fixingelement 12 may be moved along a slot provided in the elongate arm 26 (the slot is not shown inFIG. 5 ). Once the elongate fixingelement 12 has been moved to an appropriate location, its position can be fixed relative to theelongate arm 26 by tightening thewing nut 28. Repositioning of the elongate fixingelement 12 can be achieved by untightening thewing nut 28 and sliding the elongate fixingelement 12 along the slot provided in theelongate arm 26. - The clamping
apparatus 20 can be constructed from any suitable material. For example, the clampingapparatus 20 can be constructed from aluminium, steel, etc. - Use of the clamping
apparatus 20 ofFIG. 5 is shown and described in relation toFIGS. 6 a to 6 d.FIG. 6 a shows a floorslab sub structure 2. Attached to the floorslab sub structure 2 at the outer edge of the building is theupstand 5. Disposed on top of the floorslab sub structure 2 is acorrugated sheet 6. The floorslab sub structure 2,upstand 5 andcorrugated sheet 6 are identical to those described in relation toFIGS. 3 and 4 . The clampingapparatus 20 is attached to the floorslab sub structure 2 andupstand 5. The clampingapparatus 20 is attached by positioning thefirst clamp surface 21 underneath the floorslab sub structure 2 and positioning thesecond clamp surface 22 above theupstand 5. Thesecond clamp surface 22 is moved such that it is in contact with theupstand 5 while, at the same time, thefirst clamp surface 21 is in contact with the underside of the floorslab sub structure 2. The clampingapparatus 20 is then fixed in position relative to the floorslab sub structure 2 andupstand 5 by tightening thewing nut 24 about the threadedshaft 23. - It can be seen from
FIG. 6 a that the threadedshaft 23 is parallel to the outer edge of the building (i.e. parallel to theupstand 5 as it extends away from the floor slab sub structure 2). Due to this alignment of the threadedshaft 23, it can also be seen fromFIG. 6 a that theelongate arm 26 extends parallel to the floorslab sub structure 2. - A
U-shaped channel 8 is clamped in position between the elongate fixingelement 12 and theelongate arm 26 using awing nut 28 and threadedshaft 27. TheU-shaped channel 8 can be clamped in position before or after theclamping apparatus 20 has been attached to the floorslab sub structure 2 andupstand 5. The elongate fixingelement 12 can be moved to a desired location along the length of theelongate arm 26. - Since the
elongate arm 26 extends parallel to the floorslab sub structure 2, and since theU-shaped channel 8 is clamped to theelongate arm 26, theU-shaped channel 8 is also aligned parallel to the floorslab sub structure 2, as well as being level with the uppermost surface of theupstand 5. -
FIG. 6 b shows the arrangement ofFIG. 6 a when concrete 10 has been poured onto the floorslab sub structure 2 andcorrugated sheet 6. The concrete is prevented from pouring out of the building by theupstand 5.FIG. 6 c shows the arrangement ofFIG. 6 b when the clampingapparatus 20 has been removed and the concrete 10 allowed to set. It can be seen that since theU-shaped channel 8 was aligned parallel to the floorslab sub structure 2 and level with the uppermost surface of theupstand 5, that the level of the concrete 10 is aligned well with the uppermost surface of theU-shaped channel 8. -
FIG. 6 d shows how curtain walling 4 can be attached to theU-shaped channel 8 in the same manner as described with reference toFIG. 3 c. Since theU-shaped channel 8 is well aligned, thebracket 11 and curtain-walling section 4 can also be aligned well—i.e. thebracket 11 can be aligned such that it is parallel to the level of the concrete 10, and, consequently, the curtain-walling section 4 can be aligned such that it is parallel to theupstand 5, and thus the outside of the building. - It will be appreciated that the method and apparatus used to apply curtain-walling to the building described in relation to
FIGS. 5 and 6 is a vast improvement over the apparatus and method described in relation toFIGS. 3 and 4 . InFIGS. 3 and 4 , alignment of the U-shaped channel depends strongly on the attachment of theU-shaped channel 8 to themetal mesh 7. If thismetal mesh 7 is not level when attachment to theU-shaped channel 8 is made, theU-shaped channel 8 will not be aligned correctly and will need realignment before the curtain-walling sections can be attached to their term. In stark contrast, the method and apparatus according to the present invention allows theU-shaped channel 8 to be quickly and accurately aligned. The fact that theU-shaped channel 8 is clamped to theelongate arm 26 of aclamping apparatus 20 means that the alignment of theU-shaped channel 8 is not affected when concrete is poured onto the floorslab sub structure 2. Since alignment of theU-shaped channel 8 using the method and apparatus according to the present invention is quick and accurate, time and expense can be saved when compared with prior art techniques, where realignment of theU-shaped channel 8 is often required. - It will be appreciated that the
guide rail 25 is not essential to the operation of the clampingapparatus 20. The guide rail only serves to add rigidity and structural support to theclamping apparatus 20. Similarly, it will be appreciated that the second clamp (e.g. that comprising thewing nut 28, threadedshaft 27 and elongate fixing element 12) need not be moveable along the length of theelongate arm 26. However, the movement of the second clamp along theelongate arm 26 allows a certain degree of flexibility in the positioning of theU-shaped channel 8, as will be described further below. - As described above it can be seen from the Figures that the substantially
U-shaped channel 8 is not exactly U-shaped, but has inwardly facing lips. As stated above, the lips are used to prevent a fixing element from moving out of the channel when the fixing element has been appropriately positioned in the channel. It will be appreciated that the channel need not be U-shaped, but can be of another shape which defines a channel for reception of a fixing element. For example, the cross-section of the channel can be substantially triangular, trapezoidal, rectangular etc., the channel having lips to prevent a fixing element from moving out of the channel when the fixing element has been appropriately positioned in the channel. Such channels are referred to generally as fixing channels (see for example the fixing channels manufactured and sold by Ancon Building Products, Sheffield, UK). - An elongate fixing element is a fixing element which has a greater length than width. For example, an elongate fixing element may be an elongate piece of metal, such as an abbeysolt. By using an elongate fixing element, the fixing element can be fixed in position in a fixing channel. To do this, the elongate fixing element is oriented so that its length is parallel to that of the channel. The elongate fixing element is then located in the channel. The elongate fixing element is then rotated such that its length is perpendicular to the length of the channel, the lips of the fixing channel preventing the fixing element from being removed.
- It will be appreciated by one having ordinary skill in the art that the above embodiments are given by way of example only. One having ordinary skill in the at will appreciate that various modifications may be made to the described embodiments without departing from the invention as defined by the claims that follow.
Claims (23)
1. A clamping apparatus, comprising:
a first clamp provided with: a first clamp surface;
a second clamp surface; and
a substantially straight shaft, the first clamp surface and second clamp surface being arranged to be moveable relative to each other along the shaft to clamp an object between the first clamp surface and the second clamp surface, at least one of the clamp surfaces being releasably fixable, and a second clamp provided on an arm which extends from the second clamp surface, the arm extending in a direction substantially perpendicular to the shaft.
2. A clamp as claim in claim 1 , wherein the first clamp surface is fixed in position relative to the shaft, and the second clamp surface is moveable relative to the first clamp surface.
3. A clamp as claimed in claim 2 , wherein the shaft extends from the first clamp through the second clamp surface.
4. A clamp as claimed in claim 1 , wherein the second clamp is moveable along the arm, in a direction substantially perpendicular to the length of the shaft.
5. A clamp as claimed in claim 4 , wherein the second clamp is moveable along a slot provided in the arm.
6. A clamp as claimed in claim 1 , further comprising a guide rail, the guide rail being substantially straight and parallel to shaft, extending between the first clamp surface and second clamp surface.
7. A clamp as claimed in claim 6 , wherein the guide rail extends from the second clamp surface through the first clamp surface.
8. A clamp as claimed in claim 1 , wherein the shaft is provided with a securing element for releasably securing at least one of the clamp surfaces in position when the first clamp is arranged to clamp an object.
9. A clamp as claimed in claim 1 , wherein the second clamp comprises a shaft which extends through the arm, the shaft being arranged to engage with a securing element on one side of the arm, and the shaft being provided with a clamp surface on another side of the arm which is arranged to clamp an object inbetween the clamp surface and the arm.
10. A clamp as claimed in claim 9 , wherein the clamp surface is provided by an elongate fixing element.
11. A clamp as claimed in claim 10 , wherein the elongate fixing element is shaped to engage with a fixing channel.
12. A clamp as claimed in claim 8 , wherein the securing element is a wing nut.
13. A method of clamping a fixing channel in position relative to a floor slab sub structure, comprising:
moving at least one of a first clamp surface and a second clamp surface of a first clamp along a substantially straight shaft, and releasably fixing the at least one clamp surface to clamp between the first clamp surface and the second clamp surface the floor slab sub structure and an upstand extending from the floor slab sub structure;
using a second clamp which is attached to the first clamp to clamp the fixing channel so that the fixing channel is parallel to the floor slab sub structure and in a position substantially perpendicular to and away from the shaft.
14. A method as claimed in claim 13 , wherein the fixing channel is clamped in position before the first clamp is used to attach the clamp to the floor slab sub structure and upstand.
15. A method as claimed in claim 13 , wherein the fixing channel is clamped in position after the first clamp is used to attach the clamp to the floor slab sub structure and upstand.
16. A method as claimed in claim 13 , further comprising setting the fixing channel in position before removing the clamp and unclamping the fixing channel.
17. A method as claimed in claim 16 , wherein the fixing channel is fixed in position using concrete or cement.
18. A method as claimed in claim 17 , wherein the concrete or cement is poured onto the floor slab sub structure, the extent to which the concrete or cement flows across the floor slab sub structure being restricted, at least in part, by the upstand.
19. A method as claimed in claim 16 , wherein a curtain walling section is attached to the fixing channel.
20. A method as claimed in claim 19 , wherein a curtain walling section is attached to the bracket.
21. A method as claimed in claim 16 , wherein a curtain walling section is attached to the fixing channel.
22. (canceled)
23. (canceled)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0613647A GB2439953A (en) | 2006-07-08 | 2006-07-08 | Clamping apparatus for locating building floor channels |
GB0613647.7 | 2006-07-08 | ||
PCT/GB2007/002506 WO2008007054A2 (en) | 2006-07-08 | 2007-07-05 | A clamp |
Publications (1)
Publication Number | Publication Date |
---|---|
US20100024347A1 true US20100024347A1 (en) | 2010-02-04 |
Family
ID=36926736
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/309,050 Abandoned US20100024347A1 (en) | 2006-07-08 | 2007-07-05 | Clamp |
Country Status (5)
Country | Link |
---|---|
US (1) | US20100024347A1 (en) |
EP (1) | EP2038494A2 (en) |
CN (1) | CN101490348A (en) |
GB (1) | GB2439953A (en) |
WO (1) | WO2008007054A2 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2444919B (en) * | 2006-12-20 | 2009-04-22 | Milenco Ltd | Apparatus including a mirror assembly |
GB0722521D0 (en) * | 2007-11-16 | 2007-12-27 | Whitby Alan | A clamp |
DE102010029045A1 (en) | 2010-05-18 | 2011-11-24 | Hilti Aktiengesellschaft | Adapter and holding system with an adapter |
CN103033167A (en) * | 2012-12-25 | 2013-04-10 | 张锐 | Novel water level support structure |
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US874199A (en) * | 1907-03-23 | 1907-12-17 | Jacob W Horner | Dental soldering apparatus. |
US960415A (en) * | 1909-08-31 | 1910-06-07 | Frank O Schalkle | Adjustable bench-tool. |
US1609912A (en) * | 1925-08-19 | 1926-12-07 | Mazeau Marcel | Adjustable steel grade beam |
US2552580A (en) * | 1949-10-31 | 1951-05-15 | Float Lock Corp | Vise having jaws supportable on flat surface of machine tool by spindle adjustable and lockable in plane parallel to said surface |
US3228679A (en) * | 1963-08-08 | 1966-01-11 | Kansas Sheet Metal Co Inc | Apparatus for supporting conduits in trenches |
US4073107A (en) * | 1976-03-08 | 1978-02-14 | "Applications de la Chimie, de l'Electricite et des Metaux" en abrege: "SADACEM" | Curtain wall structure |
US4247090A (en) * | 1979-09-11 | 1981-01-27 | Hahn Roy C | Combined corner clamp and support |
US4836517A (en) * | 1988-01-11 | 1989-06-06 | Vossler Carl M | Fascia board installing apparatus |
US4844655A (en) * | 1987-03-02 | 1989-07-04 | Aleshire Leonard C | Surface drainage conduit installation structure and method |
US5836132A (en) * | 1996-04-10 | 1998-11-17 | E-Z Anchor Bolt Template, Inc. | Anchor template |
US6234447B1 (en) * | 1998-12-31 | 2001-05-22 | Allor Manufacturing, Inc. | Spacer for concrete form walls |
US6233900B1 (en) * | 1999-06-17 | 2001-05-22 | Larnell Gill | Partition clamping device |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9320907D0 (en) * | 1993-10-11 | 1993-12-01 | Haxey Eng Ltd | A clamp |
-
2006
- 2006-07-08 GB GB0613647A patent/GB2439953A/en not_active Withdrawn
-
2007
- 2007-07-05 EP EP07733463A patent/EP2038494A2/en not_active Withdrawn
- 2007-07-05 WO PCT/GB2007/002506 patent/WO2008007054A2/en active Application Filing
- 2007-07-05 CN CNA2007800259743A patent/CN101490348A/en active Pending
- 2007-07-05 US US12/309,050 patent/US20100024347A1/en not_active Abandoned
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US874199A (en) * | 1907-03-23 | 1907-12-17 | Jacob W Horner | Dental soldering apparatus. |
US960415A (en) * | 1909-08-31 | 1910-06-07 | Frank O Schalkle | Adjustable bench-tool. |
US1609912A (en) * | 1925-08-19 | 1926-12-07 | Mazeau Marcel | Adjustable steel grade beam |
US2552580A (en) * | 1949-10-31 | 1951-05-15 | Float Lock Corp | Vise having jaws supportable on flat surface of machine tool by spindle adjustable and lockable in plane parallel to said surface |
US3228679A (en) * | 1963-08-08 | 1966-01-11 | Kansas Sheet Metal Co Inc | Apparatus for supporting conduits in trenches |
US4073107A (en) * | 1976-03-08 | 1978-02-14 | "Applications de la Chimie, de l'Electricite et des Metaux" en abrege: "SADACEM" | Curtain wall structure |
US4247090A (en) * | 1979-09-11 | 1981-01-27 | Hahn Roy C | Combined corner clamp and support |
US4844655A (en) * | 1987-03-02 | 1989-07-04 | Aleshire Leonard C | Surface drainage conduit installation structure and method |
US4836517A (en) * | 1988-01-11 | 1989-06-06 | Vossler Carl M | Fascia board installing apparatus |
US5836132A (en) * | 1996-04-10 | 1998-11-17 | E-Z Anchor Bolt Template, Inc. | Anchor template |
US6234447B1 (en) * | 1998-12-31 | 2001-05-22 | Allor Manufacturing, Inc. | Spacer for concrete form walls |
US6233900B1 (en) * | 1999-06-17 | 2001-05-22 | Larnell Gill | Partition clamping device |
Also Published As
Publication number | Publication date |
---|---|
WO2008007054A2 (en) | 2008-01-17 |
GB0613647D0 (en) | 2006-08-16 |
EP2038494A2 (en) | 2009-03-25 |
GB2439953A (en) | 2008-01-16 |
CN101490348A (en) | 2009-07-22 |
WO2008007054A3 (en) | 2008-03-13 |
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Legal Events
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |