CA2221304A1 - Safety apparatus for climbing harness - Google Patents
Safety apparatus for climbing harness Download PDFInfo
- Publication number
- CA2221304A1 CA2221304A1 CA002221304A CA2221304A CA2221304A1 CA 2221304 A1 CA2221304 A1 CA 2221304A1 CA 002221304 A CA002221304 A CA 002221304A CA 2221304 A CA2221304 A CA 2221304A CA 2221304 A1 CA2221304 A1 CA 2221304A1
- Authority
- CA
- Canada
- Prior art keywords
- pole
- bracket
- rope
- safety apparatus
- climbing
- 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
- 230000009194 climbing Effects 0.000 title claims abstract description 17
- 239000002184 metal Substances 0.000 abstract description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B27/00—Apparatus for climbing poles, trees, or the like
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B35/00—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
- A62B35/0043—Lifelines, lanyards, and anchors therefore
- A62B35/0068—Anchors
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Emergency Lowering Means (AREA)
Abstract
A safety apparatus is provided for use with a climbing harness of the kind including a waist belt (16, figure 3) having a rope (15) secured to opposite sides of the belt and passing round a pole (17) being climbed. The apparatus comprises a metal bracket (11) extending between and holding the opposite sides of the rope (15) closer together than would be the case in the absence of the bracket so as to maintain a greater length of the rope in frictional engagement with the circumference of the pole. The bracket (11) is slidable towards or away from the pole and is biassed towards the pole (17) by an elastic cord (20) passing around the pole and attached to opposite ends of the bracket.
Description
CA 0222l304 l997-ll-l3 W O95/31251 PCT~E95/00028 Description Safet,v Apparatus for Climbing Harness i Technical Field S The present invention relates to a safety apparatus for use with a climbing h~rn~ss.
Background Art Telephone lines and power supply lines are mounted on the top of poles and pylons for carrying such lines cross-country. In order to fix the lines in position and to carry out repairs, people have to climb the poles usually using climbing irons strapped to their feet and a climbing or safety h~rn~ which comprises a waist belt with a rope which passes around the pole and is secured to the sides of the waist belt. The rope optionally passes through a sleeve which frictionally engages the pole. Such a climbing harness will hereinafter be described as a climbing h~ ss of the type described.
Many accidents occur using this climbing h~rn~ss res -1tin~ in the user falling from poles. This is due to the inability of the climbing h~ s.c to stop a user falling to the ground when friction ~t;Lweell the rope or sleeve and the pole is inadvelleuLly reduced for any reason.
Disclosure of the Invention According to the invention there is provided a safety ~aldlus for use with a climbing h~rn~s~ of the type described, comprising means for enp~ging a rope passing round a pole so as to m~int~in a greater length of the rope in frictional engagement with the cil.;ul,lfere.lce of the pole than in the absence of the eng~gin~ means.
By the term rope, we mean a hemp rope or a flat strap, for example, of synthetic material, or the like used in climbing apparatus.
W O95/31251 PCT~E95/00028 Brief Description of the Drawings An embodiment of the invention will now be described, by way of example, with reference to the accompanying drawings, in which:
s Figure 1 is a perspective view of a safety apparatus according to the invention;
Figure 2 is a perspective view of the apparatus of Figure 1 in use with 10 a climbing h~rn~s~; and Figure 3 is a sch~m~tic view of the safety apparatus in use with a user.
15 Description of the Plert;lled Embodiment Referring now to the drawings wherein si ilar numerals have been used to inrlicate like parts, there is shown therein a safety apparatus generally in(lir~te-l at 10 according to the emb~imlont of the invention.
20 The apparatus 10 comprises a metal bracket 11 having an upturned flange 12 at each end 13, the flanges 12 defining curved rece~se~ 14 for slidably accommodating the opposite sides of the rope 15 (Figure 2) of a climbing harness 16 (Figure 3) worn by a user for climbing for example a telegraph pole 17.
The bracket 11 holds the opposite sides of the rope 15 closer together than would otherwise be the case, thereby m~inf~ining a greater length of the rope in frictional engagement with the circumfe~ellce of the pole.
The bracket 11 further has a respective lug 18,19 on the flanges 12.
An elastic shock cord 20 is anchored in the lug 18 and passes through a plastic sheath 21 and the unextended length of the cord 20 is adjustable by adjusting the position of a plastic ball 22 on the cord 20. The ball 22 engages the lug 19 to limit the length of cord 20 which is usable. A
plurality of flanges 23 are arranged on the underside of the bracket 11.
-As shown in Figure 2, the rope 15 of a clirnbing harness 16 engages in the recesses 14 under the flanges 12 so that as the bracket 11 is pushed towards the pole 17 a greater length of the rope 15 is caused to engage the J circumference of the pole 17. As shown the rope passes through a sleeve 24 which engages with the surface of the pole 17. Also, the cord 20 is used to position the bracket 11 on the rope 15, so that for ex~mple, if the usable length of the cord 20 is increased then the bracket 11 will slide away from the pole 17 slightly and thus the length of rope 15 which abuts the circumference of the pole will decrease. The cord 20 is thus in use always under positive tension to bias the bracket 11 towards the pole 17 and hold the bracket 11 in the correct position. Thus, the invention provides the important safety feature that it secures the rope 15 in position around a pole 17 and mi,.;".i~e~ the danger of a user accidentally falling from such a pole. If the user should fall or slip even slightly on the pole 17, the flanges 23 on the underside of the bracket 11, which are in the form of teeth, will engage or dig into the pole 17 to provide an added safety feature.
The invention thus provides an important safety device to provide added security to those working in industries where climbing such poles is nPcess~ry. The invention further enables the user ~lP~te freedom to work while safely secured to a pole.
As the unextended length of the cord 20 between the lugs 18, 19 is adjustable, the apparatus may be readily used with dirr~le.ll diameter poles.
Background Art Telephone lines and power supply lines are mounted on the top of poles and pylons for carrying such lines cross-country. In order to fix the lines in position and to carry out repairs, people have to climb the poles usually using climbing irons strapped to their feet and a climbing or safety h~rn~ which comprises a waist belt with a rope which passes around the pole and is secured to the sides of the waist belt. The rope optionally passes through a sleeve which frictionally engages the pole. Such a climbing harness will hereinafter be described as a climbing h~ ss of the type described.
Many accidents occur using this climbing h~rn~ss res -1tin~ in the user falling from poles. This is due to the inability of the climbing h~ s.c to stop a user falling to the ground when friction ~t;Lweell the rope or sleeve and the pole is inadvelleuLly reduced for any reason.
Disclosure of the Invention According to the invention there is provided a safety ~aldlus for use with a climbing h~rn~s~ of the type described, comprising means for enp~ging a rope passing round a pole so as to m~int~in a greater length of the rope in frictional engagement with the cil.;ul,lfere.lce of the pole than in the absence of the eng~gin~ means.
By the term rope, we mean a hemp rope or a flat strap, for example, of synthetic material, or the like used in climbing apparatus.
W O95/31251 PCT~E95/00028 Brief Description of the Drawings An embodiment of the invention will now be described, by way of example, with reference to the accompanying drawings, in which:
s Figure 1 is a perspective view of a safety apparatus according to the invention;
Figure 2 is a perspective view of the apparatus of Figure 1 in use with 10 a climbing h~rn~s~; and Figure 3 is a sch~m~tic view of the safety apparatus in use with a user.
15 Description of the Plert;lled Embodiment Referring now to the drawings wherein si ilar numerals have been used to inrlicate like parts, there is shown therein a safety apparatus generally in(lir~te-l at 10 according to the emb~imlont of the invention.
20 The apparatus 10 comprises a metal bracket 11 having an upturned flange 12 at each end 13, the flanges 12 defining curved rece~se~ 14 for slidably accommodating the opposite sides of the rope 15 (Figure 2) of a climbing harness 16 (Figure 3) worn by a user for climbing for example a telegraph pole 17.
The bracket 11 holds the opposite sides of the rope 15 closer together than would otherwise be the case, thereby m~inf~ining a greater length of the rope in frictional engagement with the circumfe~ellce of the pole.
The bracket 11 further has a respective lug 18,19 on the flanges 12.
An elastic shock cord 20 is anchored in the lug 18 and passes through a plastic sheath 21 and the unextended length of the cord 20 is adjustable by adjusting the position of a plastic ball 22 on the cord 20. The ball 22 engages the lug 19 to limit the length of cord 20 which is usable. A
plurality of flanges 23 are arranged on the underside of the bracket 11.
-As shown in Figure 2, the rope 15 of a clirnbing harness 16 engages in the recesses 14 under the flanges 12 so that as the bracket 11 is pushed towards the pole 17 a greater length of the rope 15 is caused to engage the J circumference of the pole 17. As shown the rope passes through a sleeve 24 which engages with the surface of the pole 17. Also, the cord 20 is used to position the bracket 11 on the rope 15, so that for ex~mple, if the usable length of the cord 20 is increased then the bracket 11 will slide away from the pole 17 slightly and thus the length of rope 15 which abuts the circumference of the pole will decrease. The cord 20 is thus in use always under positive tension to bias the bracket 11 towards the pole 17 and hold the bracket 11 in the correct position. Thus, the invention provides the important safety feature that it secures the rope 15 in position around a pole 17 and mi,.;".i~e~ the danger of a user accidentally falling from such a pole. If the user should fall or slip even slightly on the pole 17, the flanges 23 on the underside of the bracket 11, which are in the form of teeth, will engage or dig into the pole 17 to provide an added safety feature.
The invention thus provides an important safety device to provide added security to those working in industries where climbing such poles is nPcess~ry. The invention further enables the user ~lP~te freedom to work while safely secured to a pole.
As the unextended length of the cord 20 between the lugs 18, 19 is adjustable, the apparatus may be readily used with dirr~le.ll diameter poles.
Claims (5)
1. A safety apparatus for use with a climbing harness of the type described, comprising means for engaging a rope passing round a pole so as to maintain a greater length of the rope in frictional engagement with the circumference of the pole than in the absence of the engaging means.
2. A safety apparatus as claimed in claim 1, wherein the engaging means includes a bracket extending between and holding the opposite sides of the rope closer together than in the absence of the bracket, the bracket being slidable towards or away from the pole so as to increase or decrease the length of rope in frictional engagement with the circumference of the pole.
3. A safety aparatus as claimed in claim 2, further including an elastic cord passing around the pole and attached to opposite ends of the bracket for biassing the bracket towards the pole.
4. A safety apparatus as claimed in claim 3, wherein the unextended length of the elastic cord between the opposite ends of the bracket is adjustable.
5. A safety apparatus as claimed claim 1, further including one or more teeth on the underside of the bracket for digging into the pole in case of a user wearing the harness slipping down the pole.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IES940397 | 1994-05-13 | ||
| IE940397 | 1994-05-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2221304A1 true CA2221304A1 (en) | 1995-11-23 |
Family
ID=11040399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002221304A Abandoned CA2221304A1 (en) | 1994-05-13 | 1995-05-08 | Safety apparatus for climbing harness |
Country Status (4)
| Country | Link |
|---|---|
| AU (1) | AU2418095A (en) |
| CA (1) | CA2221304A1 (en) |
| FR (1) | FR2719778B3 (en) |
| WO (1) | WO1995031251A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19922460A1 (en) | 1998-05-17 | 1999-11-18 | Brust Hans Detlef | Protection against falling and climbing aid for ascending masts, trees and similar |
| US8398135B2 (en) * | 2009-02-24 | 2013-03-19 | D B Industries, Inc. | Pole safety assembly |
| AU2011303473B2 (en) * | 2010-09-17 | 2016-02-18 | Low Height Fas Industries Sa (Proprietary) Limited | A fall protection system |
| CN110917522B (en) * | 2020-01-13 | 2024-04-05 | 成都吉宙研创科技有限公司 | Falling protection device convenient for pole climbing or tree climbing operation |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR699522A (en) * | 1930-05-28 | 1931-02-16 | Improvement in seat belts | |
| US2920714A (en) * | 1957-08-29 | 1960-01-12 | John M Johnson | Safety device for pole climbers |
| US2879830A (en) * | 1957-12-03 | 1959-03-31 | John M Johnson | Pole climbing safety device and seat |
| US5141074A (en) * | 1992-02-24 | 1992-08-25 | Ontario Hydro | Lineman's pole strap assembly |
| US5184696A (en) * | 1992-03-06 | 1993-02-09 | Myles Meed | Fall arrest belt assembly |
-
1995
- 1995-05-08 WO PCT/IE1995/000028 patent/WO1995031251A1/en active Application Filing
- 1995-05-08 AU AU24180/95A patent/AU2418095A/en not_active Abandoned
- 1995-05-08 CA CA002221304A patent/CA2221304A1/en not_active Abandoned
- 1995-05-12 FR FR9505647A patent/FR2719778B3/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR2719778A1 (en) | 1995-11-17 |
| AU2418095A (en) | 1995-12-05 |
| WO1995031251A1 (en) | 1995-11-23 |
| FR2719778B3 (en) | 1996-08-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued | ||
| FZDE | Discontinued |
Effective date: 20050329 |