AU725226B3 - Ferrule holding device - Google Patents
Ferrule holding device Download PDFInfo
- Publication number
- AU725226B3 AU725226B3 AU31307/00A AU3130700A AU725226B3 AU 725226 B3 AU725226 B3 AU 725226B3 AU 31307/00 A AU31307/00 A AU 31307/00A AU 3130700 A AU3130700 A AU 3130700A AU 725226 B3 AU725226 B3 AU 725226B3
- Authority
- AU
- Australia
- Prior art keywords
- base
- ferrule
- tool
- locating
- formwork
- 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.)
- Ceased
Links
Classifications
-
- 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
- E04G15/00—Forms or shutterings for making openings, cavities, slits, or channels
- E04G15/04—Cores for anchor holes or the like around anchors embedded in the concrete
-
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Moulds, Cores, Or Mandrels (AREA)
Description
AUSTRALIA
PATENTS ACT.1990
ORIGINAL
COMPLETE SPECIFICATION PETTY PATENT Invention Title: FERRULE HOLDING DEVICE Name of Applicant: VICTOR EMMANUEL CASSAR The following statement is a full description of this invention, including the best method of performing it known to me/us: 2 A FERRULE LOCATING TOOL The present invention relates generally to a ferrule locating tool such as that used to locate a ferrule in a pre-cast concrete panel or a "tilt panel".
Tilt panels are generally pre-cast in reinforced concrete using steel formwork. The tilt panels include a grid of ferrules cast within the panel to provide anchoring points at which the panel can be lifted, braced or fixed.
Conventionally, the ferrules are each bolted to the formwork at their predetermined positions. The panels together with the ferrules and reinforcing steel are then cast within the formwork structure whilst the bolts hold the ferrules in position. Once the concrete has cured and the panel is to be released from the formwork the bolts are removed. This technique for locating the ferrules suffers from at least the following drawbacks: the steel formwork requires drilling for each of the ferrules which is both time consuming and labour intensive; and (ii) each panel may have its own grid of ferrules which requires repeated drilling of the formwork for the specific ferrule locations.
According to one aspect of the present invention there is provided a ferrule locating tool for a concrete panel, said tool comprising: a base including one or more magnetic elements designed to releasably locate the base at a predetermined position on formwork on which the concrete panel is to be formed; and a locating member connected to the base and being adapted to removably receive a ferrule which is temporarily magnetically secured to the base.
3 According to another aspect of the invention there is provide a method of casting one or more ferrules in a concrete panel, said method comprising the steps of: providing one or more ferrule locating tools each including a base connected to a locating member being adapted to removably received on of the ferrules; locating the base at a predetermined position on formwork on which the concrete panel is to be formed; magnetically securing the base to the formwork at the predetermined position; and locating said one ferrule on the respective locating member and temporarily magnetically securing said ferrule to the base in preparation for casting the concrete panel.
Preferably the base further includes one or more other magnetic elements being configured to effect the temporary magnetic securing of the ferrule to the base. More preferably said other magnetic elements are disposed about a periphery of the locating member.
Typically the magnetic force exerted by said one or more magnetic elements is greater than that exerted by said one or more other magnetic elements. Thus, the ferrule locating tool is retained on the formwork when the cured concrete panel is lifted or otherwise released from the formwork.
Generally said one or more magnetic elements are in the form of a circular or ring-shaped magnetic element located in a lower surface of the base whilst said one or more other magnetic elements are separate magnets positioned in an upper surface of the base adjacent the locating member.
Alternatively the base is at least partly constructed of a magnetic material thereby forming said one or more magnetic elements and/or said one or more other magnetic elements.
4 Typically the base is generally disc-shaped and the locating member is in the form of a pin or dowel connected coaxial with the base. More typically the pin is screw threaded to the base.
Preferably the pin is adapted to be slidably received within a threaded bore of the ferrule. More preferably the disc-shaped base includes a tapered peripheral wall which allows retraction of the tool from the cast concrete panel.
Typically said magnetic elements are formed of a relatively strong magnetic material such as an alloy of Neodymium, Iron and Boron.
Generally the concrete panel is a pre-cast concrete panel otherwise known in Australia as a "tilt panel".
In order to facilitate a better understanding of the nature of the present invention a preferred embodiment of a ferrule locating tool will now be described, by way of example only, with reference to the accompanying drawing in which: Figure 1 is an elevational together with upper and lower views of a ferrule locating tool.
As shown in figure 1 there is a ferrule locating tool depicted generally as 10 comprising a base 12 and a locating member 14. The tool 10 of this embodiment includes a magnetic element 16 set within a lower surface of the base 12 and a pair of other magnetic elements 18A and.18B set in an upper surface of the base 12.
In this example the base 12 is disc-shaped having a tapered peripheral wall 20. The locating member 14 is in the form of a pin or dowel which is screw threaded via a 5 fastener (not shown) coaxial with the disc-shaped base 12.
The diameter of the dowel 14 is such that it slidably receives a ferrule (not shown). However, it should be appreciated that the dowel 14 can be interchanged depending on the particular ferrule which it is to engage.
The dowel 14 may include a ring-shaped or circular magnet (not shown) located adjacent its screw connection to the base 12. This may assist in magnetic retention of the ferrule to the locating tool 10. The dowel 14 at its upper end may also be shaped to receive a spanner or the like which facilitates unscrewing or tightening of the dowel 14 to the base In this embodiment the disc-shaped base 20 and dowel 14 are machined from steel. The lower and upper magnets 16 and 18A/B are formed of a relatively strong magnetic material which in this example is an alby of neodymium, iron and boron. The tool 10 is designed so that the magnetic force exerted by the lower magnet 16 is greater than that exerted by the upper magnets 18A/B.
Furthermore, the disc-shaped base 12 is designed so that the magnetic field generated by the lower and upper magnets 16 and 18A/B is concentrated in close proximity to the base 12.
In order to assist in further understanding this embodiment of the invention, the general steps involved in locating a ferrule in a concrete panel such as a pre-cast tilt panel, using the described ferrule locating tool will now be outlined: 1. The disc-shaped base 20 is located on formwork, such as a steel sheet, at its required position; 2. The lower magnet 16 temporarily secures the tool to the formwork; 6 3. The ferrule is slid over the dowel 14 of the tool and 4. The upper magnets 18A/B temporarily magnetically secure the ferrule to the base 12 of the tool This procedure is repeated for each ferrule which is to be cast within the tilt panel of this example. In a conventional manner concrete is then poured onto the formwork to form the tilt panel in which the ferrules are embedded. The magnetic force exerted on the formwork by the lower magnet 16 is sufficient to securely hold the ferrule in position whilst the panel is poured and thereafter cures.
The relative strengths of the lower and upper magnets 16 and 18A/B are such that upon lifting of the pre-cast tilt panel from the formwork, the various ferrules are released from the respective tool 10 whilst the tool 10 is securely retained on the formwork. The tapered peripheral wall of the base 12 of the tool 10 assists in release of the pre-cast tilt wall from the tool 10 without damaging the tilt panel. Advantageously, each of the ferrules are "automatically" released from the respective locating tool such as 10 upon lifting of the tilt panel. The threaded bore of the respective ferrule merely slides clear of the dowel 14 of the tool Now that a preferred embodiment of the invention has been described i-n some detail it will be apparent to those skilled in the art that the ferrule locating tool has at least the following advantages over the admitted art: 1. The locating tools can be located on the formwork panel relying on the magnetic attraction of the tool without the necessity for drilling holes for fixing of the tool; 7 2. The position of the locating tool can be adjusted merely by releasing the magnetic "clamp" between the base and the formwork without the need to drill additional holes; 3. The ferrule locating tool is relatively quick to locate and remains in position whilst the concrete panel is poured; and 4. The ferrule locating tool allows for "automatic" release of the ferrule whilst the tool is retained on the formwork.
It would be apparent to those skilled in the art that the invention described may include variations and modifications. For example, a portion of the base and/or locating member itself may be fabricated from a magnetic material which is effective in retaining the tool on the formwork and/or releasably holding the ferrule.
Furthermore, the base and locating member may be formed integral with one another rather than in two components as described. The specific configuration of the locating tool may vary provided it can be magnetically secured to formwork and provide a locating member for the ferrule.
All such variations and modifications are to be considered within the scope of the present invention and nature of which to be determined from the foregoing description.
Claims (3)
1. A ferrule locating tool for a concrete panel, said tool comprising: a base including one or more magnetic elements designed to releasably locate the base at a predetermined position on formwork on which the concrete panel is to be formed; and a locating member connected to the base and being adapted to removably receive a ferrule which is temporarily magnetically secured to the base.
2. A ferrule locating tool as defined in claim 1 wherein the base further includes one or more other magnetic elements being configured to effect the temporary magnetic securing of the ferrule to the base.
3. A ferrule locating tool as defined in claim 2 wherein said one or more magnetic elements are in the form of a circular or ring-shaped magnetic element located in a lower surface of the base whilst said one or more other magnetic elements are separate magnets positioned in an upper surface of the base adjacent the locating member. Dated this 1 1 Ith day of August 2000 VICTOR EMMANUEL CASSAR By their Patent Attorneys GRIFFITH HACK CO) iLj3 i
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU31307/00A AU725226B3 (en) | 1999-09-15 | 2000-05-03 | Ferrule holding device |
CNB008128308A CN1143043C (en) | 1999-09-15 | 2000-09-14 | Ferrule holding device |
AU74988/00A AU7498800A (en) | 1999-09-15 | 2000-09-14 | Ferrule holding device |
PCT/AU2000/001114 WO2001020103A1 (en) | 1999-09-15 | 2000-09-14 | Ferrule holding device |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPQ2818 | 1999-09-15 | ||
AUPQ2818A AUPQ281899A0 (en) | 1999-09-15 | 1999-09-15 | Improvement to magnetic ferrule holding device |
AU31307/00A AU725226B3 (en) | 1999-09-15 | 2000-05-03 | Ferrule holding device |
Publications (1)
Publication Number | Publication Date |
---|---|
AU725226B3 true AU725226B3 (en) | 2000-10-12 |
Family
ID=25621711
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU31307/00A Ceased AU725226B3 (en) | 1999-09-15 | 2000-05-03 | Ferrule holding device |
Country Status (3)
Country | Link |
---|---|
CN (1) | CN1143043C (en) |
AU (1) | AU725226B3 (en) |
WO (1) | WO2001020103A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4006266A1 (en) * | 2020-11-30 | 2022-06-01 | Georg Weidner | Holding devices for transport anchors and transport anchors |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2829373A1 (en) * | 2013-07-26 | 2015-01-28 | HILTI Aktiengesellschaft | Positioning element and formwork assembly |
CN105540404A (en) * | 2016-01-27 | 2016-05-04 | 宁波新大陆磁制品有限公司 | Cement prefabricated slab suction cup |
FR3049628B1 (en) * | 2016-04-01 | 2018-09-07 | Thierry Pilloix Resines (Tpr) | SOCKET BRACKET AND ANCHOR ASSEMBLY |
CN108237410B (en) * | 2016-12-27 | 2019-09-13 | 无锡深南电路有限公司 | A kind of IC support plate sharp processing localization method and its equipment used |
EP4261363A1 (en) * | 2022-04-12 | 2023-10-18 | Georg Weidner | Concrete component with screw hole |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2323283A1 (en) * | 1973-05-09 | 1974-11-28 | Pfeiffer Fa Ed | DEVICE FOR FASTENING IN FORMWORK FOR PRECAST CONCRETE PARTS |
US4652845A (en) * | 1985-10-16 | 1987-03-24 | Larry K. Goodman | Magnetic holding device |
US5155954A (en) * | 1991-02-08 | 1992-10-20 | Etablissements A. Mure | Device for temporary retention of a lifting element on a metal surface of a form during the concrete pouring and setting phases of a prefabricated concrete member |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI3487U1 (en) * | 1998-03-27 | 1998-07-23 | Addtek Res & Dev Oy Ab | Removable side system of the mold |
-
2000
- 2000-05-03 AU AU31307/00A patent/AU725226B3/en not_active Ceased
- 2000-09-14 CN CNB008128308A patent/CN1143043C/en not_active Expired - Fee Related
- 2000-09-14 WO PCT/AU2000/001114 patent/WO2001020103A1/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2323283A1 (en) * | 1973-05-09 | 1974-11-28 | Pfeiffer Fa Ed | DEVICE FOR FASTENING IN FORMWORK FOR PRECAST CONCRETE PARTS |
US4652845A (en) * | 1985-10-16 | 1987-03-24 | Larry K. Goodman | Magnetic holding device |
US5155954A (en) * | 1991-02-08 | 1992-10-20 | Etablissements A. Mure | Device for temporary retention of a lifting element on a metal surface of a form during the concrete pouring and setting phases of a prefabricated concrete member |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4006266A1 (en) * | 2020-11-30 | 2022-06-01 | Georg Weidner | Holding devices for transport anchors and transport anchors |
Also Published As
Publication number | Publication date |
---|---|
CN1143043C (en) | 2004-03-24 |
WO2001020103A1 (en) | 2001-03-22 |
CN1373826A (en) | 2002-10-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FGF | Patent sealed or granted (petty patent) |
Ref document number: 3130700 Effective date: 20001012 |
|
NCF | Extension of term for petty patent requested (sect. 69) | ||
NDF | Extension of term granted for petty patent (sect. 69) |