WO2005024268A1 - Line tensioning device and methods - Google Patents
Line tensioning device and methods Download PDFInfo
- Publication number
- WO2005024268A1 WO2005024268A1 PCT/AU2004/001212 AU2004001212W WO2005024268A1 WO 2005024268 A1 WO2005024268 A1 WO 2005024268A1 AU 2004001212 W AU2004001212 W AU 2004001212W WO 2005024268 A1 WO2005024268 A1 WO 2005024268A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- line
- tensioning device
- elongate body
- rotation
- hook
- Prior art date
Links
Classifications
-
- 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
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G11/00—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes
- F16G11/12—Connections or attachments, e.g. turnbuckles, adapted for straining of cables, ropes, or wire
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P7/00—Securing or covering of load on vehicles
- B60P7/06—Securing of load
- B60P7/08—Securing to the vehicle floor or sides
- B60P7/0823—Straps; Tighteners
- B60P7/0838—Tensioning by single movement of an actuating member
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P7/00—Securing or covering of load on vehicles
- B60P7/06—Securing of load
- B60P7/08—Securing to the vehicle floor or sides
- B60P7/0823—Straps; Tighteners
- B60P7/0853—Tools for manipulating straps or tighteners
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/04—Fastening or guiding equipment for chains, ropes, hawsers, or the like
-
- 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
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G11/00—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes
- F16G11/10—Quick-acting fastenings; Clamps holding in one direction only
- F16G11/105—Clamps holding in one direction only
- F16G11/106—Clamps holding in one direction only using a toothed surface
Definitions
- the invention relates to a deyice for tensioning lines such as rope and the like and methods for tensioning ropes using the device.
- the invention resides in a line tensioning device comprising: an elongate body having a line locating region; and a hook at a first end of the elongate body; wherein, said hook maintains the line tensioning device in position after rotation of the device to achieve a desired tension in said line.
- the device further comprises at least one aperture through the elongate body.
- the at least one aperture is preferably through the line locating region of the elongate body.
- the device further comprises at least one locking means for securing in position the line passing through one of the apertures.
- the locking means comprises a manually operated, pivotally mounted lever accommodated in a slot in the elongate body.
- the lever is biased towards a closed position by a biasing means.
- the lever comprises a serrated end for engaging the line.
- the serrated end comprises a tooth that protrudes further from the end of the lever than remaining teeth of the serrated end.
- the invention resides in a method of tensioning a line, said method including the steps of: locating part of the line about a line locating region of an elongate body of a line tensioning device; rotating the line tensioning device in a first direction of rotation until a desired tension is achieved in the line; and maintaining the desired tension via a hook at a first end of the elongate body, said hook engaging the line and preventing rotation of the line tensioning device in a second direction of rotation opposite to the first direction of rotation.
- locating part of the line includes the step of: threading an end of the line through an aperture in the line locating region; and/or looping the line at least once around the line locating region.
- FIG 1 shows a plan view of the line tensioning device according to an embodiment of the present invention
- FIG 2 shows an underside view of the line tensioning device shown in FIG
- FIG 3 shows a side view of the line tensioning device shown in FIG 1 ;
- FIG 4 shows a view of a first end of the line tensioning device shown in FIG 1 ;
- FIG 5 shows a view of a second end of the line tensioning device shown in FIG 1 ;
- FIG 6 shows a sectional side view of the line tensioning device shown in FIG 1 ;
- FIG 7 shows a sectional side view of the line tensioning device shown in
- FIG 1 engaging two ends of a line
- FIG 8 is a perspective view of the device shown in FIG 1 being used with a line having two free ends
- FIG 9 is a perspective view showing excess slack in the line being taken up during use of the device shown in FIG 1
- FIG 10 is a perspective view showing rotation of the device of FIG 1 to increase tension in the line
- FIG 11 is a perspective view showing the device of FIG 1 secured in place with a tensioned line
- FIG 12 is a perspective view showing the device of FIG 1 being used to tension a line having no free ends
- FIG 13 is a perspective view showing the device of FIG 1 being secured in place on the tensioned line
- FIG 14 is a flowchart showing the method steps in tensioning a line using the device of the present invention.
- the line tensioning device 10 comprises an elongate body 12 having a line locating region 13 substantially centrally thereof and a hook 14 at a first end 16 of the elongate body 12.
- the line locating region 13 is a region of the body of reduced thickness compared with the remainder of the body and forms a "waist" of the body 12.
- the hook 14 may be integrally formed with the body 12 or formed separately therefrom and attached by any suitable means known in the art.
- the elongate body 12 comprises at least one aperture 18 therethrough, through which a free (untied) end 20 of a line 22 to be tensioned can be passed.
- the apertures are sized such that lines of a range of thicknesses and diameters can be passed therethrough.
- the elongate body 12 comprises two apertures 18 therethrough to enable the tensioning of a line 22 with two free ends.
- the present invention may also be used to tension a line that is tied at both ends, i.e. having no free (untied) ends.
- the line tensioning device 10 further comprises locking means 24 for securing in position a line 22 passing through one of the apertures 18.
- Locking means 24 comprises a pivotally mounted, manually operated lever 26 located in a slot 28. With reference to FIG 6, lever 26 pivots about pivot point 30 between an open position and a closed position. The closed position of lever 26 is shown in FIG 6 in solid lines and the open position of lever 26 is shown in broken lines with the directions of motion indicated by the arrows. Lever 26 is biased in the closed position by a biasing means 32.
- biasing means 32 is in the form of a mechanical spring, although other forms of biasing means are envisaged, such as an integral plastics hair spring formed as part of the lever 26. Biasing means 32 are positioned via locating recesses (not shown) in the elongate body 12 and the levers 26.
- an upper profile 33 of the lever 26 conforms to an upper profile 35 of the elongate body 12 apart from a raised portion 34 of the lever 26 at an end of the lever nearest the pivot point 30.
- Raised portion 34 allows a user to easily move the lever 26 against the biasing means 32 from the closed position to the open position. Raised portion 34 also renders use of levers of the device clear to a user.
- lever 26 At an end of the lever 26 opposite the raised position 34, lever 26 comprises a toothed or serrated end 36 for engagement with the line 22 passing through aperture 18.
- Elongate body 12 also comprises a post 38 separating apertures 18. Hence, with reference to FIG 7, a line 22 passing through aperture 18 of the device is held securely in place by the locking means 24.
- biasing means 32 urging lever 26 toward the closed position such that the serrated end 36 engages the line 22 and forces the line against the post 38.
- the pivot point 30 for lever 26 is located at a point along the length of the lever such that the serrated end 36 of the lever achieves a relatively shallow angle of attack with respect to the line 22. This enables a range of line thicknesses to be accommodated by the present invention and provides a positive lock on the line as it is tensioned. As the line is tensioned, the line causes the lever 26 to pivot about point 30, thus drawing in the serrated end 36 resulting in line 22 being locked between lever 26 and post 38.
- the lowest tooth 40 of the serrated end 36 protrudes further than the remaining teeth such that the lowest tooth 40 is the first tooth to engage the line 22 passing through the aperture 18 irrespective of the line thickness.
- the serrated end 36 is also gently curved to maximize the number of teeth in engagement with the line 22.
- the line tensioning device 10 is then rotated in a first, clockwise direction, thus twisting the line and increasing the tension therein, until a desired tension is achieved.
- the desired tension is maintained in the line by deforming the line 22 past the first end 16 of the body 12 and the hook 14 engaging the line.
- the line naturally wants to unwind in an anticlockwise direction to release the tension in the line, but the line is prevented from doing so by the hook 14.
- the reduced thickness of the line locating region 13 relative to the remainder of the body 12 helps prevent the line 22 from slipping along the body 12 because the line is tightened around the narrower region 13 and is unable to move to the thicker regions of the body 12.
- FIGS 8-11 illustrate the tensioning of a line having two free ends, but also assist in the understanding of tensioning a line having only a single free end.
- a line is tied at one end such that there is one free end, the free end is passed through aperture 18.
- two apertures 18 are provided in the device 10 and one free end of the line 22 is available, generally the aperture closer to the first end 16 of the elongate body 12 comprising the hook 14 is utilized, although the invention functions equally well using either aperture.
- excess slack in the line 22 is taken up by pulling the free end through the aperture 18 and the locking means 24 prevents the line 22 from slipping back through the aperture.
- the line is then looped around line locating region 13 and the device is rotated clockwise, as described in the previous example, until a desired tension in the line 22 is achieved. Untwisting of the line is prevented by the hook 14 securing the device 10 in place. Where there are two free ends of the line 22 to be tensioned, each end is passed through a respective aperture 18 of the device, as shown in FIG 8, and the excess slack is taken up as described above with reference to FIG 9. The device 10 is rotated clockwise as shown in FIG 10 until a desired tension in the line 22 is achieved. Untwisting of the line is prevented by the hook 14 securing the device 10 in place as shown in FIG 11.
- the device 10 may be produced by injection moulding using glass-filled nylon, which is hard wearing and is resistant to degradation from UV radiation.
- glass-filled nylon which is hard wearing and is resistant to degradation from UV radiation.
- other suitable materials known in the art may be utilized.
- the length of the elongate body 12, apart from the line locating region 13, is ribbed to provide grip. Ribbing also reduces the mass of material required for the device and therefore the cost of production. Ribbing has the further advantage that it increases the surface area of the device thus decreasing cooling times in the injection moulding process and therefore reducing production times.
- Another cost-minimizing feature of the present invention is the symmetrical nature of the elongate body 12 and the mirror image nature of the levers 26, i.e. differently shaped levers 26 do not need to be produced for the embodiment comprising two levers.
- the line tensioning device of the present invention addresses the aforementioned problems of the prior art by providing an elongate body comprising a line locating region about which a line to be tensioned is located. This is achieved by looping the line around the line locating region and/or threading one or more ends of the line through one ore more apertures in the line locating region. Rotation of the device enables the desired tension to be achieved and a large amount of tension can be achieved through relatively little effort. Untwisting of the tensioned line is prevented via the hook at the end of the elongate body. The device does not require the user to tie any knots in the line to be tensioned nor does the device require a large amount of effort from the user to achieve the desired tension.
- the device of the present invention is relatively simple compared with the aforementioned prior art and the device comprises the aforementioned features to minimize the cost and duration of production. Whilst the present invention has been described in use by rotating the device clockwise, it will be appreciated that a mirror image of the hook 14 could be employed at the first end 16 of the body 12, which would require rotation of the device anti-clockwise to increase the tension in the line and enable securing of the tensioned line by the hook 14.
- the provision of two locking means 24 in an embodiment of the invention enables ends of lines of different thicknesses and/or materials to be securely received and tensioned.
- the securing of one line by one lever is independent of the securing of another line by another lever, hence lines of different thicknesses can be passed through the respective apertures 18 and tensioned.
- the inventor has also found that the device of the present invention does not damage the line being tensioned even after prolonged and repeated tensioning of the same line.
- the line tensioning device of the present invention has many applications since it may be used to tension lines secured at both ends or with lines having one or more free ends. Examples include securing loads on trailers, utility vehicles, trucks or the like, outdoor activities such as camping or for clamping components together, such as during gluing.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Transportation (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ocean & Marine Engineering (AREA)
- Package Frames And Binding Bands (AREA)
- Clamps And Clips (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2004270762A AU2004270762A1 (en) | 2003-09-08 | 2004-09-08 | Line tensioning device and methods |
US10/570,936 US20060283997A1 (en) | 2003-09-08 | 2004-09-08 | Line tensioning device and methods |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003904860 | 2003-09-08 | ||
AU2003904860A AU2003904860A0 (en) | 2003-09-08 | Rope Tensioner |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005024268A1 true WO2005024268A1 (en) | 2005-03-17 |
Family
ID=34230081
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AU2004/001212 WO2005024268A1 (en) | 2003-09-08 | 2004-09-08 | Line tensioning device and methods |
Country Status (2)
Country | Link |
---|---|
US (1) | US20060283997A1 (en) |
WO (1) | WO2005024268A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7405204B2 (en) | 2005-04-25 | 2008-07-29 | Genelabs Technologies, Inc. | Nucleoside compounds for treating viral infections |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2147677A (en) * | 1976-01-28 | 1978-07-27 | Watson W A E | A wire or rope tightener |
DE2927907A1 (en) * | 1979-07-11 | 1981-02-12 | Heinrich Behrens | Tourniquet type tensioner for load securing strap - has bar with bush around strap at one end and strap engaging hook at other |
AU2012183A (en) * | 1982-10-12 | 1984-04-19 | Perkins, M.G.N. | Fencing wire strainer |
AU5269398A (en) * | 1997-01-28 | 1998-07-30 | Neville Brent Leete | Wire and rope tensioner |
DE19738936A1 (en) * | 1997-09-05 | 1999-03-18 | Sonntag Philipp Dr | One-piece wire-tightening equipment |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5803209A (en) * | 1995-10-26 | 1998-09-08 | Suzaki; Kiyoshi | Adjustable rope tensioner |
-
2004
- 2004-09-08 WO PCT/AU2004/001212 patent/WO2005024268A1/en active Application Filing
- 2004-09-08 US US10/570,936 patent/US20060283997A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2147677A (en) * | 1976-01-28 | 1978-07-27 | Watson W A E | A wire or rope tightener |
DE2927907A1 (en) * | 1979-07-11 | 1981-02-12 | Heinrich Behrens | Tourniquet type tensioner for load securing strap - has bar with bush around strap at one end and strap engaging hook at other |
AU2012183A (en) * | 1982-10-12 | 1984-04-19 | Perkins, M.G.N. | Fencing wire strainer |
AU5269398A (en) * | 1997-01-28 | 1998-07-30 | Neville Brent Leete | Wire and rope tensioner |
DE19738936A1 (en) * | 1997-09-05 | 1999-03-18 | Sonntag Philipp Dr | One-piece wire-tightening equipment |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7405204B2 (en) | 2005-04-25 | 2008-07-29 | Genelabs Technologies, Inc. | Nucleoside compounds for treating viral infections |
Also Published As
Publication number | Publication date |
---|---|
US20060283997A1 (en) | 2006-12-21 |
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