AU1127099A - Cable bolt - Google Patents
Cable bolt Download PDFInfo
- Publication number
- AU1127099A AU1127099A AU11270/99A AU1127099A AU1127099A AU 1127099 A AU1127099 A AU 1127099A AU 11270/99 A AU11270/99 A AU 11270/99A AU 1127099 A AU1127099 A AU 1127099A AU 1127099 A AU1127099 A AU 1127099A
- Authority
- AU
- Australia
- Prior art keywords
- cable bolt
- cable
- bolt
- attachment
- engagement
- 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
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- Piles And Underground Anchors (AREA)
Description
S F Ref: 444380
AUSTRALIA
PATENTS ACT 1990 COMPLETE SPECIFICATION FOR A STANDARD PATENT ft.
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ORIGINAL
Name and Address of Applicant: Actual Inventor(s): Address for Service: Invention Title: ASSOCIATED PROVISIONAL [31] Application No(s) PP1319 The ANI Corporation Limited Level 5, Merlin Centre 235 Pyrmont Street Pyrmont New South Wales 2009
AUSTRALIA
Mietek Rataj Spruson Ferguson, Patent Attorneys Level 33 St Martins Tower, 31 Market Street Sydney, New South Wales, 2000, Australia Cable Bolt APPLICATION DETAILS E33] Country
AU
[32] Application Date 13 January 1998 The following statement is a full description of this invention, including the best method of performing it known to me/us:- 5815 CABLE BOLT Field of the Invention The following invention relates to cable bolts and their method of installation.
More particularly, though not exclusively, the invention relates to a cable bolt having an attachment extending from one end thereof, which attachment is adapted to be engaged by a tool used for turning the cable bolt for mixing of resin in a borehole of a rock formation. The invention also relates to a cable bolt having an angled end shaped to interact with a mating turning implement.
Cable bolts traditionally have been installed in a rock formation by cement S 10 grouting. In this method, the cable is pushed into a pre-drilled hole and the cement grout is pumped into the hole to anchor the cable.
:Faster methods of cable bolt installation are currently being developed. These methods are similar to methods used for installation of solid bolts where the bolt is anchored by a resin grout.
In this method, a resin cartridge containing two components of which one is a hardener, is inserted into the pre-drilled hole in the rock formation prior to insertion of the cable bolt. Forcing the cable into the borehole while simultaneously rotating the cable ruptures the resin cartridge or cartridges and mixes the resin components within the annulus between the bolt and the borehole wall.
In order to rotate a cable for resin mixing, some attachment is required to engage the cable with a rotating tool such as a spanner.
Known prior art methods employed a special fitting having a hexagonal barrel i and a plug. The barrel has an internally tapered funnel-shaped bore therethrough and a tapered plug having a frusto-conical outer surface that engages the funnel-shaped inner surface of the drive barrel. The tapered plug has an internal bore concentric with the outer frusto-conical surface and fits over the cable. The hexagonal head drive barrel provides a rigid head for the cable bolt allowing engagement by a spanner. An example of such an arrangement is shown in Australian Patent No. AU-A-50708/96.
Another method of coupling the cable with the rotating tool is described in US Patent No. 5,511,909. The fitting of this reference includes a barrel and plug as described above, although the end portions of the plug members extend out of the barrel. These protrusions being of square or hexagonal shape engage with the rotating spanner.
Another method of rotating a cable bolt in order to mix the resin is disclosed in Australian Patent No. 668515. In this reference, the cable is threaded and a standard nut is screwed onto the cable in much the same way as a nut is threadably engaged with a solid bolt.
IN:\LIBLL]02032:KEH 4 'Uf 3 All of the above described methods are relatively expensive due to the requirement of machining of the hexagonal shaped barrel or plug segments with special protrusions or threading of the cable.
Object of the Invention It is the object of the present invention to overcome or substantially ameliorate the above disadvantages.
Disclosure of the Invention There is disclosed herein a cable bolt having a longitudinal axis and an engagement face at one end for engagement with a tool to effect rotation of the cable bolt about said axis, which engagement face does not protrude laterally beyond the cable bolt at said one end.
Preferably, the cable bolt includes a plurality of engagement faces, each said engagement face being on an attachment having a non-circular cross-section welded to S•the end of the cable bolt.
S 15 Preferably, the attachment has a square cross section.
Alternatively, the attachment can have a hexagonal cross section.
Alternatively, the engagement face can be a slanted end of the cable bolt, which slanted end matches with a mating surface in a recess of the tool.
Preferably, the slanted end is reinforced by welding.
Preferably, the slanted end extends at an angle in the range of 30' to 60' from the longitudinal axis of the cable bolt.
0 Brief Description of the Drawings Preferred forms of the present invention will now be described by way of example with reference to the accompanying drawings, wherein: Fig. 1 is a schematic perspective view of a cable bolt having an attachment welded to one end thereof, and Fig. 2 is a schematic perspective view of a cable bolt having a slanted surface formed in one end thereof.
Description of the Preferred Embodiments In Fig. 1 of the accompanying drawings there is schematically depicted an end portion of a cable bolt. This is the end portion which protrudes from a pre-drilled hole in a rock structure when used. That is, it is the end of the cable remote from the end which pierces the resin grout capsule. A square shaped section 1 is attached to the cable bolt as shown, typically by means of welding 3. The transverse maximum IN:\L18LL102032:KEH dimension of the attachment 1 is smaller than the outside diameter of the cable bolt 2 so as to allow for easy installation of a barrel and wedges.
The fact that the attachment 1 does not protrude beyond the perimeter of the cable 2 enables pre-tensioning equipment which can only be used on a cable with no protrusions to be used.
The installation spanner (not shown) will have a socket with a square aperture to engage with the square attachment in order to rotate the cable. Of course, the protrusion 1 could be any non-circular shape such as hexagonal.
A further embodiment of the invention is depicted in Fig. 2. In this embodiment, the cable bolt 2 has a slanted end 4 which extends at an angle which is typically in the range of 300 to 600 from the direction of extent of the cable bolt 2.
•The flat surface of the slanted end 4 is adapted to match with a similarly angled surface in a spanner having a corresponding recess to enable engagement between the cable and S:•i the spanner sufficient to enable rotation of the cable by rotation of the spanner so as to mix the resin components at the other end of the cable bolt. The slanted end 4 may be reinforced by welding of the flat face 4.
It should be appreciated that modifications and alterations obvious to those skilled in the art are not to be considered as beyond the scope of the present invention.
For example, a pair of oppositely disposed tapered surfaces 4 might be provided in the 20 end of the cable bolt 2 rather than a single face 4.
•oeoo [N:\LIBLLJO2032:KEH -i
Claims (8)
1. A cable bolt having a longitudinal axis and an engagement face at one end for engagement with a tool to effect rotation of the cable bolt about said axis, which engagement face does not protrude laterally beyond the cable bolt at said one end.
2. The cable bolt of claim 1 including a plurality of engagement faces, wherein each said engagement face is on an attachment having a non-circular cross- section welded to the end of the cable bolt.
3. The cable bolt of claim 2, wherein the attachment has a square cross 1 o section.
4. The cable bolt of claim 2, wherein the attachment has a hexagonal cross section.
5. The cable bolt of claim 1, wherein the engagement face is a slanted end of the cable bolt, which slanted end matches with a mating surface in a recess of 15 the tool.
6. The cable bolt of claim 5, wherein the slanted end is reinforced by welding.
7. The cable bolt of claim 5, wherein the slanted end extends at an angle in the range of 30° to 60° from the longitudinal axis of the cable bolt.
8. A cable bolt, substantially as hereinbefore described with reference to the accompanying drawings. Dated 8 January, 1999 The ANI Corporation Ltd Patent Attorneys for the Applicant/Nominated Person SPRUSON FERGUSON [N:\LIBLL]02032:KEH
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU11270/99A AU722243C (en) | 1998-01-13 | 1999-01-11 | Cable bolt |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AUPP1319A AUPP131998A0 (en) | 1998-01-13 | 1998-01-13 | Cable bolt |
| AUPP1319 | 1998-01-13 | ||
| AU11270/99A AU722243C (en) | 1998-01-13 | 1999-01-11 | Cable bolt |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU71702/00A Division AU738529B3 (en) | 1998-01-13 | 2000-11-20 | Cable Bolt |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| AU1127099A true AU1127099A (en) | 1999-08-05 |
| AU722243B2 AU722243B2 (en) | 2000-07-27 |
| AU722243C AU722243C (en) | 2005-04-21 |
Family
ID=25614414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU11270/99A Expired AU722243C (en) | 1998-01-13 | 1999-01-11 | Cable bolt |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU722243C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115898490A (en) * | 2023-02-14 | 2023-04-04 | 西南交通大学 | Automatic cable feeding and stirring device and method for prestressed anchor cable |
-
1999
- 1999-01-11 AU AU11270/99A patent/AU722243C/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115898490A (en) * | 2023-02-14 | 2023-04-04 | 西南交通大学 | Automatic cable feeding and stirring device and method for prestressed anchor cable |
| CN115898490B (en) * | 2023-02-14 | 2023-08-22 | 西南交通大学 | Automatic cable feeding and stirring device and method for prestressed anchor cable |
Also Published As
| Publication number | Publication date |
|---|---|
| AU722243C (en) | 2005-04-21 |
| AU722243B2 (en) | 2000-07-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| CB | Opposition filed |
Opponent name: JENNMAR AUSTRALIA PTY LTD |
|
| PC1 | Assignment before grant (sect. 113) |
Owner name: DYWIDAG-SYSTEMS INTERNATIONAL PTY. LIMITED Free format text: THE FORMER OWNER WAS: THE ANI CORPORATION LIMITED |
|
| ON | Decision of a delegate or deputy of the commissioner of patents (result of patent office hearing) |
Free format text: UNDER THE CIRCUMSTANCES, A SHORT FEROCEM TYPE EXTENSION WAS GRANTED, ALLOWING JENMAR SEVEN DAYS FROM THE DATE OF THE HEARING TO SERVE ANY EVIDENCE-IN-REPLY IT HAD AT HAND. IT WAS PROPOSED TO ISSUE A DIRECTION TO HAVE THE OPPOSITION TO AN EXTENSION OF TERM TO THE PETTY HEARD SIMULTANEOUSLY WITH THE SUBSTANTIVE HEARING FOR THE PRESENT APPLICATION, PENDING REPRESENTATIONS FROM EITHER PARTY CONCERNING SUSCH A PROPOSED DIRECTION. Opponent name: JENMAR AUSTRALIA PTY LTD Effective date: 20030905 |
|
| ON | Decision of a delegate or deputy of the commissioner of patents (result of patent office hearing) |
Free format text: THE INDEPENDENT CLAIM WAS CONSIDERED TO LACK NOVELTY IN THE LIGHT OF THE PRIOR ART RAISED BY THE OPPONENT. THE CLAIMED INVENTION ALSO LACKS INVENTIVE STEP. THE INDEPENDENT CLAIM LACKS FAIR BASIS. THEREFORE THE APPL WAS GIVEN 60 DAYS FROM THE DATE OF THIS DECISION TO AMEND THE SPECIFICATION. Opponent name: JENMAR AUSTRALIA PTY LTD Effective date: 20040713 |
|
| DA2 | Applications for amendment section 104 |
Free format text: THE NATURE OF THE PROPOSED AMENDMENT IS AS SHOWN IN THE STATEMENT(S) FILED 20040729 AND 20040827 |
|
| MK14 | Patent ceased section 143(a) (annual fees not paid) or expired |