WO1997014908A1 - A clamp for repairing a pipe and also a bracket and a protective flap suitable for being used with such a clamp - Google Patents

A clamp for repairing a pipe and also a bracket and a protective flap suitable for being used with such a clamp Download PDF

Info

Publication number
WO1997014908A1
WO1997014908A1 PCT/NL1996/000406 NL9600406W WO9714908A1 WO 1997014908 A1 WO1997014908 A1 WO 1997014908A1 NL 9600406 W NL9600406 W NL 9600406W WO 9714908 A1 WO9714908 A1 WO 9714908A1
Authority
WO
WIPO (PCT)
Prior art keywords
wall
protective flap
clamp
bracket
coupling
Prior art date
Application number
PCT/NL1996/000406
Other languages
French (fr)
Dutch (nl)
Inventor
Johannes Antonius Maria Verhagen
Original Assignee
Tracon Holding Uden B.V.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tracon Holding Uden B.V. filed Critical Tracon Holding Uden B.V.
Priority to AU72292/96A priority Critical patent/AU7229296A/en
Publication of WO1997014908A1 publication Critical patent/WO1997014908A1/en

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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L21/00—Joints with sleeve or socket
    • F16L21/06—Joints with sleeve or socket with a divided sleeve or ring clamping around the pipe-ends
    • F16L21/065—Joints with sleeve or socket with a divided sleeve or ring clamping around the pipe-ends tightened by tangentially-arranged threaded pins
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L21/00—Joints with sleeve or socket
    • F16L21/002—Sleeves or nipples for pipes of the same diameter; Reduction pieces
    • F16L21/005—Sleeves or nipples for pipes of the same diameter; Reduction pieces made of elastic material, e.g. partly or completely surrounded by clamping devices
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
    • F16L55/168—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
    • F16L55/17—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by means of rings, bands or sleeves pressed against the outside surface of the pipe or hose
    • F16L55/172—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by means of rings, bands or sleeves pressed against the outside surface of the pipe or hose the ring, band or sleeve being tightened by a tangentially arranged threaded pin and a nut

Definitions

  • the invention relates to a clamp for repairing a pipe, which clamp comprises a protective flap which can be fitted round a pipe and two brackets which are movable with respect to each other and which can be coupled to the ends of said protective flap, whereby each bracket comprises a main wall, a coupling wall extending at an angle with respect to said main wall, and at least one supporting wall extending parallel to said main wall, whilst the ends of said protective flap are bent to form a fold and can be coupled to coupling walls of the brackets extending towards each other, whereby each fold abuts against an edge of a coupling wall.
  • the invention also relates to a bracket and a protective flap suitable for being used in such a clamp.
  • a clamp of this type is marketed by the appl icant under the name of QUICK REPAIR TQ10.
  • the protective flap When repairing a damaged pipe the protective flap is fitted round the pipe, after which the folded ends of the protective flap are laid over the coupling walls of the two brackets.
  • the brackets are thereby arranged in such a manner that the supporting walls are positioned between the main walls.
  • a bolt, on which a nut is screwed, extends through the main walls and the supporting walls. Tightening the nut on the bolt will cause the brackets to move towards each other, and the protective flap is pulled tightly round the pipe.
  • the bolts passed through the supporting walls and the main walls prevent undesirable tilting of the brackets.
  • a bracket When a relatively large force is exerted on the brackets, however, a bracket will deform mechanically, whereby the main wall of a bracket is bent in the direction of the associated supporting wall. This is undesirable, of course.
  • the object of the invention is to provide a clamp wherein deformation of a bracket is prevented.
  • the supporting wall of a bracket comprises two bracing walls extending transversely to said coupling wall, until said main wall .
  • the main wall, the coupling wall, the supporting wall and the bracing walls form a box, as it were, which is open to one side and which is substantially undeformable.
  • the bracing wall transmit the forces exerted on the main wall to the supporting wall.
  • One embodiment of the clamp according to the invention is characterized in that said bracket has been folded from a plate.
  • bracket can be manufactured from a single plate-shaped part in a relatively simple and inexpensive manner. No relatively costly manufacturing techniques, such as casting, are necessary for producing a bracket.
  • Cast brackets as referred to above are for example known from EP-A1-0 164 150 and EP-A1-0 392 936.
  • Another embodiment of the clamp according to the invention is characterized in that the ends of said protective flap are folded back in the direction of the other part of the protective flap.
  • said ends have been strengthened, as a result of which it is virtually impossible for the protective flaps to be pulled over the coupling wall.
  • the end of the protective flap should be pulled over the edge of the coupling wall, the end side of the protective flap will butt against the coupling wall, as a result of which the flap cannot be moved any further.
  • Figure 1 shows a clamp according to the invention in a first, still open position
  • Figures 2, 3, and 4 show the clamp according to the invention shown in Figure in successive positions upon being fitted around a pipe to be repaired;
  • Figure 5 is a side view of a part of the clamp in the position shown in Figure 4, illustrating a non-assembled position
  • Figure 6 is a view corresponding with Figure 5, illustrating an assembled position. Like parts are numbered alike in the Figures.
  • Figure 1 shows a clamp 1 according to the invention, which comprises a protective flap 2, two brackets 3, 4 and two bolts 5, 6 and nuts 7, 8 screwed on said bolts.
  • the elongated protective flap 2 comprises a rubber internal lining 9, a metal exterior lining 10 and a metal intermediate shield 11. Near the two ends the metal exterior lining 10 is bent to form a fold 12 in a direction away from the internal lining 9.
  • the ends of the exterior lining 10 are hereinafter considered to be the ends of protective flap 2, in spite of the fact that internal lining 9 extends beyond one end of exterior lining 10.
  • the ends of protective flap 2 are understood to be ends which are connected to brackets 3, 4 and by means of which the protective flap can be pulled firmly round a pipe to be repaired.
  • Each end of the exterior lining 10 is provided with two notches extending from an end side 13, as a result of which three end strips 15 have been formed.
  • the internal lining extends from a first fold 12 to beyond the second fold 12 of exterior lining 10.
  • the ends of internal lining 9 are conical, so that in the assembled position the conical ends overlap and have substantially the same thickness as the other part of the internal lining 9.
  • Bracket 3 comprises a main wall 16, a coupling wall 17, which includes an obtuse angle with main wall 16, two supporting walls 18 extending parallel to main wall 16, and bracing walls 19 extending transversely to supporting walls 18, until main wall 16.
  • the entire bracket 3 is folded from a die-cut plate.
  • Bracket 4 is identical to bracket 3, and is disposed in such a manner with respect to bracket 3 that the supporting walls 18 are positioned between the two main walls.
  • Bolts 5, 6, which are provided with nuts 7, 8 at their ends, extend through main walls 16 and supporting walls 18.
  • the end strips 15 of one end are folded over the coupling wall 17 of bracket 3. Fold 12 of the end of protective flap 2 is thereby placed over an edge 20 of coupling wall 17.
  • a part of each end strip 15 is positioned in a recess 21 bounded by coupling wall 17, supporting wall 17 and bracing wall 19, as a result of which it is prevented from coming loose.
  • Figures do not show a pipe to be repaired. It will be apparent, however, that the pipe to be repaired will extend through the space bounded by protective flap 2.
  • Figure 2 shows a position wherein the free end 22 of internal lining 9, which is still free, is being moved to the other end
  • Figure 3 shows a next position, wherein the end strips 15 of the end of exterior lining 10, which is still free, has been moved to a position between the two coupling walls 17.
  • Figure 4 shows a final position, wherein brackets 3, 4 have been moved towards each other by tightening nuts 7, 8 on bolts 5,
  • Figures 5 and 6 show a side view of the position of the clamp shown in Figure 4, with Figure 5 showing a non-assembled position and Figure 6 showing an assembled position.
  • the ends of exterior lining 10 are folded double in the direction of the other part of exterior lining 10, whereby the end sides 24 of said ends butt against the coupling walls 17 in the assembled position ( Figure 6).
  • the ends of the outer lining are thus strengthened and the exterior lining 10 is prevented from being moved over the edge 20 of coupling wall 17.
  • brackets with more than two supporting walls. In that case more than two bolts will be required and the number of notches and end strips on the protective flap will also be larger.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supports For Pipes And Cables (AREA)

Abstract

A clamp (1) for repairing a pipe, which clamp comprises a protective flap (2) which can be fitted round a pipe and two brackets (3, 4) which are movable with respect to each other and which can be coupled to the ends of said protective flap, whereby each bracket comprises a main wall (16), a coupling wall (17) extending at an angle with respect to said main wall, whereby the supporting wall of a bracket comprises two bracing walls (19) extending transversely to said coupling wall, until said main wall, whilst the ends of said protective flap are bent to form a fold and can be coupled to coupling walls of the brackets extending towards each other, whereby each fold abuts against an edge of a coupling wall.

Description

A clamp for repairing a pipe and also a bracket and a protective flap suitable for being used with such a clamp.
The invention relates to a clamp for repairing a pipe, which clamp comprises a protective flap which can be fitted round a pipe and two brackets which are movable with respect to each other and which can be coupled to the ends of said protective flap, whereby each bracket comprises a main wall, a coupling wall extending at an angle with respect to said main wall, and at least one supporting wall extending parallel to said main wall, whilst the ends of said protective flap are bent to form a fold and can be coupled to coupling walls of the brackets extending towards each other, whereby each fold abuts against an edge of a coupling wall.
The invention also relates to a bracket and a protective flap suitable for being used in such a clamp.
A clamp of this type is marketed by the appl icant under the name of QUICK REPAIR TQ10.
When repairing a damaged pipe the protective flap is fitted round the pipe, after which the folded ends of the protective flap are laid over the coupling walls of the two brackets. The brackets are thereby arranged in such a manner that the supporting walls are positioned between the main walls. A bolt, on which a nut is screwed, extends through the main walls and the supporting walls. Tightening the nut on the bolt will cause the brackets to move towards each other, and the protective flap is pulled tightly round the pipe. The bolts passed through the supporting walls and the main walls prevent undesirable tilting of the brackets. When a relatively large force is exerted on the brackets, however, a bracket will deform mechanically, whereby the main wall of a bracket is bent in the direction of the associated supporting wall. This is undesirable, of course.
The object of the invention is to provide a clamp wherein deformation of a bracket is prevented.
This objective is accomplished with a clamp according to the invention in that the supporting wall of a bracket comprises two bracing walls extending transversely to said coupling wall, until said main wall . The main wall, the coupling wall, the supporting wall and the bracing walls form a box, as it were, which is open to one side and which is substantially undeformable. The bracing wall transmit the forces exerted on the main wall to the supporting wall. By using the bracing walls the mechanical stiffness and strength of the bracket is increased in a relatively simple manner.
One embodiment of the clamp according to the invention is characterized in that said bracket has been folded from a plate.
As a result of this the bracket can be manufactured from a single plate-shaped part in a relatively simple and inexpensive manner. No relatively costly manufacturing techniques, such as casting, are necessary for producing a bracket. Cast brackets as referred to above are for example known from EP-A1-0 164 150 and EP-A1-0 392 936.
Another embodiment of the clamp according to the invention is characterized in that the ends of said protective flap are folded back in the direction of the other part of the protective flap. As a result of said folding back of the ends of the protective flap said ends have been strengthened, as a result of which it is virtually impossible for the protective flaps to be pulled over the coupling wall. In case the end of the protective flap should be pulled over the edge of the coupling wall, the end side of the protective flap will butt against the coupling wall, as a result of which the flap cannot be moved any further.
The invention will be explained in more detail with reference to the drawing, in which:
Figure 1 shows a clamp according to the invention in a first, still open position;
Figures 2, 3, and 4 show the clamp according to the invention shown in Figure in successive positions upon being fitted around a pipe to be repaired;
Figure 5 is a side view of a part of the clamp in the position shown in Figure 4, illustrating a non-assembled position; and
Figure 6 is a view corresponding with Figure 5, illustrating an assembled position. Like parts are numbered alike in the Figures.
Figure 1 shows a clamp 1 according to the invention, which comprises a protective flap 2, two brackets 3, 4 and two bolts 5, 6 and nuts 7, 8 screwed on said bolts. The elongated protective flap 2 comprises a rubber internal lining 9, a metal exterior lining 10 and a metal intermediate shield 11. Near the two ends the metal exterior lining 10 is bent to form a fold 12 in a direction away from the internal lining 9. The ends of the exterior lining 10 are hereinafter considered to be the ends of protective flap 2, in spite of the fact that internal lining 9 extends beyond one end of exterior lining 10. The ends of protective flap 2 are understood to be ends which are connected to brackets 3, 4 and by means of which the protective flap can be pulled firmly round a pipe to be repaired. Each end of the exterior lining 10 is provided with two notches extending from an end side 13, as a result of which three end strips 15 have been formed. The internal lining extends from a first fold 12 to beyond the second fold 12 of exterior lining 10. The ends of internal lining 9 are conical, so that in the assembled position the conical ends overlap and have substantially the same thickness as the other part of the internal lining 9.
Bracket 3 comprises a main wall 16, a coupling wall 17, which includes an obtuse angle with main wall 16, two supporting walls 18 extending parallel to main wall 16, and bracing walls 19 extending transversely to supporting walls 18, until main wall 16. The entire bracket 3 is folded from a die-cut plate. Bracket 4 is identical to bracket 3, and is disposed in such a manner with respect to bracket 3 that the supporting walls 18 are positioned between the two main walls. Bolts 5, 6, which are provided with nuts 7, 8 at their ends, extend through main walls 16 and supporting walls 18. In the position of clamp 1 shown in Figure 1 the end strips 15 of one end are folded over the coupling wall 17 of bracket 3. Fold 12 of the end of protective flap 2 is thereby placed over an edge 20 of coupling wall 17. As can be seen in Figure 1, a part of each end strip 15 is positioned in a recess 21 bounded by coupling wall 17, supporting wall 17 and bracing wall 19, as a result of which it is prevented from coming loose.
For reasons of clearity the Figures do not show a pipe to be repaired. It will be apparent, however, that the pipe to be repaired will extend through the space bounded by protective flap 2. Figure 2 shows a position wherein the free end 22 of internal lining 9, which is still free, is being moved to the other end Figure 3 shows a next position, wherein the end strips 15 of the end of exterior lining 10, which is still free, has been moved to a position between the two coupling walls 17.
Figure 4 shows a final position, wherein brackets 3, 4 have been moved towards each other by tightening nuts 7, 8 on bolts 5,
6, as a result of which the ends of protective flap 2 folded over the coupling walls are pulled towards each other and protective flap 2 is pulled tightly round the pipe (not shown).
Figures 5 and 6 show a side view of the position of the clamp shown in Figure 4, with Figure 5 showing a non-assembled position and Figure 6 showing an assembled position. As can be clearly seen in the Figures, the ends of exterior lining 10 are folded double in the direction of the other part of exterior lining 10, whereby the end sides 24 of said ends butt against the coupling walls 17 in the assembled position (Figure 6). The ends of the outer lining are thus strengthened and the exterior lining 10 is prevented from being moved over the edge 20 of coupling wall 17.
It is possible to provide the brackets with more than two supporting walls. In that case more than two bolts will be required and the number of notches and end strips on the protective flap will also be larger.

Claims

1. A clamp for repairing a pipe, which clamp comprises a protective flap which can be fitted round a pipe and two brackets which are movable with respect to each other and which can be coupled to the ends of said protective flap, whereby each bracket comprises a main wall, a coupling wall extending at an angle with respect to said main wall, and at least one supporting wall extending parallel to said main wall, whilst the ends of said protective flap are bent to form a fold and can be coupled to coupling walls of the brackets extending towards each other, whereby each fold abuts against an edge of a coupling wall, characterized in that the supporting wall of a bracket comprises two bracing walls extending transversely to said coupling wall, until said main wall.
2. A clamp according to claim 1, characterized in that said bracket has been folded from a plate.
3. A clamp according to claim 1 or 2, characterized in that each bracket comprises to spaced-apart supporting walls.
4. A clamp according to claim 1, 2, or 3, characterized in that the ends of said protective flap are folded back in the direction of the other part of the protective flap.
5. A bracket suitable for being used in a clamp according to any one of the preceding claims.
6. A protective flap suitable for being used in a clamp according to any one of the preceding claims.
PCT/NL1996/000406 1995-10-20 1996-10-17 A clamp for repairing a pipe and also a bracket and a protective flap suitable for being used with such a clamp WO1997014908A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU72292/96A AU7229296A (en) 1995-10-20 1996-10-17 A clamp for repairing a pipe and also a bracket and a protective flap suitable for being used with such a clamp

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1001456A NL1001456C2 (en) 1995-10-20 1995-10-20 Clamp for repairing a pipe as well as bracket and protective flap suitable for use with such a clamp.
NL1001456 1995-10-20

Publications (1)

Publication Number Publication Date
WO1997014908A1 true WO1997014908A1 (en) 1997-04-24

Family

ID=19761726

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL1996/000406 WO1997014908A1 (en) 1995-10-20 1996-10-17 A clamp for repairing a pipe and also a bracket and a protective flap suitable for being used with such a clamp

Country Status (3)

Country Link
AU (1) AU7229296A (en)
NL (1) NL1001456C2 (en)
WO (1) WO1997014908A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2779207A1 (en) * 1998-05-28 1999-12-03 Equip Ind Europ Device for repairing water distribution pipe
IT201800002894A1 (en) * 2018-02-21 2019-08-21 Armando Fiorenza Collar applicable on pipes and the like with improved closing system.
CN110356712A (en) * 2019-07-25 2019-10-22 徐州易尚饰家装饰工程有限责任公司 A kind of floating bearing transhipment rest protective ring

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2713352A (en) * 1951-06-16 1955-07-19 Edward H Schustack Pipe coupling
FR1229454A (en) * 1959-07-08 1960-09-07 Dresser Ind Improvements to pipe clamps
US3439945A (en) * 1965-05-26 1969-04-22 Shamban & Co W S Pipe joint seal and method
GB1355906A (en) * 1971-10-29 1974-06-12 Smith Blair Inc Pipe clamp made of non-cast materials

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2713352A (en) * 1951-06-16 1955-07-19 Edward H Schustack Pipe coupling
FR1229454A (en) * 1959-07-08 1960-09-07 Dresser Ind Improvements to pipe clamps
US3439945A (en) * 1965-05-26 1969-04-22 Shamban & Co W S Pipe joint seal and method
GB1355906A (en) * 1971-10-29 1974-06-12 Smith Blair Inc Pipe clamp made of non-cast materials

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2779207A1 (en) * 1998-05-28 1999-12-03 Equip Ind Europ Device for repairing water distribution pipe
IT201800002894A1 (en) * 2018-02-21 2019-08-21 Armando Fiorenza Collar applicable on pipes and the like with improved closing system.
CN110356712A (en) * 2019-07-25 2019-10-22 徐州易尚饰家装饰工程有限责任公司 A kind of floating bearing transhipment rest protective ring
CN110356712B (en) * 2019-07-25 2021-01-29 徐州易尚饰家装饰工程有限责任公司 Rotary bearing transports and holds in palm guard ring

Also Published As

Publication number Publication date
NL1001456C2 (en) 1997-04-22
AU7229296A (en) 1997-05-07

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