GB1564357A - Tube clamp - Google Patents

Tube clamp Download PDF

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Publication number
GB1564357A
GB1564357A GB5283476A GB5283476A GB1564357A GB 1564357 A GB1564357 A GB 1564357A GB 5283476 A GB5283476 A GB 5283476A GB 5283476 A GB5283476 A GB 5283476A GB 1564357 A GB1564357 A GB 1564357A
Authority
GB
United Kingdom
Prior art keywords
sleeve
tube
clamp
members
sleeve members
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.)
Expired
Application number
GB5283476A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Boeing Co
Original Assignee
Boeing Co
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 Boeing Co filed Critical Boeing Co
Priority to GB5283476A priority Critical patent/GB1564357A/en
Priority to FR7639736A priority patent/FR2376320A1/en
Publication of GB1564357A publication Critical patent/GB1564357A/en
Expired legal-status Critical Current

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
    • F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
    • F16L3/16—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets with special provision allowing movement of the pipe
    • F16L3/18—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets with special provision allowing movement of the pipe allowing movement in axial direction
    • 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
    • F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
    • F16L3/08—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
    • F16L3/12—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing comprising a member substantially surrounding the pipe, cable or protective tubing
    • F16L3/123—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing comprising a member substantially surrounding the pipe, cable or protective tubing and extending along the attachment surface
    • 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
    • F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
    • F16L3/08—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
    • F16L3/12—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing comprising a member substantially surrounding the pipe, cable or protective tubing
    • F16L3/123—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing comprising a member substantially surrounding the pipe, cable or protective tubing and extending along the attachment surface
    • F16L3/1233—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing comprising a member substantially surrounding the pipe, cable or protective tubing and extending along the attachment surface the member being of metal, with or without an other layer of other material

Landscapes

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

Description

(54) TUBE CLAMP (71) We, THE BOEING COMPANY, a Corporation organised and existing under the laws of the State of Delaware, United States of America, of P.O. Box 3707 M.S. 49-40 Seattle, Washington, United States of America, do hereby declare the invention for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement:- The present invention relates to mounting clamps for tubing and more particularly to tube clamps for hydraulic tubing utilised in environments which cause wear between tube and clamp.
In certain demanding environments, e.g.
in high performance aircraft under conditions of high vibration levels, increased temperature, and aerodynamic buffeting and structural flexure, excessive wear tends to occur between the tube and clamp especially in the presence of abrasive contaminants which can cause hardening of resilient materials or cushions used in such clamps so that uniform bearing is difficult to maintain without increased maintenance and replacement of these mounting clamps.
The present invention seeks to at least partially mitigate the foregoing problems.
According to one aspect of this invention there is provided a method of supporting a tube on a fixed structure comprising the steps of: protecting the clamped portion of the tube with a split sleeve by interlocking opposing halves of said sleeve around said tube in a spring fit so that axial displacement of the sleeve along the tube is frictionally resisted; mounting said sleeve in a loop clamp the width of which is less than the distance between end shoulders of said sleeve and the clamp in operation being arranged to compress the outside of the sleeve between the end shoulders so that axial displacement of said sleeve in said clamp is frictionally resisted; the outside diameter of the tube and the inside diameter of the sleeve being such that in operation the frictional resistance to displacement of said sleeve on the tube is greater than said frictional resistance to displacement of said sleeve in said clamp; and attaching said clamp to the fixed structure.
According to a further aspect of this invention there is provided clamping apparatus for supporting a metal tube on a fixed structure, the apparatus comprising a split sleeve arranged to circumferentially surround the tube; said sleeve having identical, interlocking halves, each said half having at least one tongue and at least one slot adapted to interlock with the slot and tongue respectively of the other half and raised shoulders at their ends, and a loop clamp adapted to surround the split sleeve between the end shoulders and to attach to the fixed structure, said interlocking tongues extending cylindrically from each interlocking half whereby each half cylindrically surrounds more than 1800 of the tube circumference when in use, said sleeve halves being adapted to be snapped into place to be installed onto the tube whereby axial displacement of said sleeve along said tube when in use is frictionally resisted by the spring clamp action of each part of said split sleeve, the width of said loop clamp being less than the distance between said end shoulders of said split sleeve, so that said sleeve can be displaced axially in said surrounding loop clamp, and the inside diameter of said loop clamp being such that in operation the loop clamp is a compression fit around the outside of said sleeve so that said axial displacement between said sleeve and said loop clamp is frictionally resisted, the relative diameter of the apparatus being arranged such that the frictional resistance between said loop clamp and said sleeve is less than the frictional resistance between said sleeve and the metal tube.
In order that the present invention may be readily understood, the following embodiment will be described by way of example with reference to the accompanying drawing, on which: FIGURE 1 is a view, after assembly, of the tube clamp attaching a tube to supporting structure therefor; FIGURE 2 is a view in perspective prior to assembly of tube clamp half sleeves showing their manner of organization about a conduit to be supported; FIGURE 3 is an end view in section seen along the line 3-3 of FIGURE 1 showing the cylindrically shaped half sleeve members and their saddle forming end shoulders; and, FIGURE 4 is a mid section view of the clamp along line 4-4 of FIGURE 1 showing the interlocking relationship of mating center tabs of each of the cylindrically shaped half sleeve members.
Turning now to FIGURE 1, it will be noted that the tube clamp indicated generally at 10 comprises three parts, viz. a pair of generally cylindrically shaped half sleeve members 12 and 14, and a surrounding loop clamp 16 for supporting the half sleeve members 12 and 14 about inner tubing membe rl 8, loop clamp 16 providing the holding support to main structure 20 for tube member 18, loop clamp 16 providing the holding ally outwardly extending end shoulders 24 and 26 of cylindrically shaped half sleeve member 12 and radially outwardly extending end shoulders 28 and 30 of cylindrically shaped sleeve half member 14 (the lower half of sleeve member as shown in FIGURE 1 ì which provide a saddle seating region therebetween for seating of loop clamp 16.
Turning now to FIGURE 2, the two interchangeable and identically shaped cylindrically shaped half sleeve members 12 and 14 have an inside diameter substantially equal to or slightly less than the outside diameter of tube 18. Cylindrically shaped half sleeve member 12 has a tongue 40 located at the center of, and extending outward circumferentially from, a first longitudinal side 41 of half sleeve member 12, the second longitudinal side 43 of half sleeve member 12 having a slot 44 at the center thereof. Facing cylindrically shaped half sleeve member 14, identically dimensioned and structured, also has a tongue 49 and slot 52 which when positioned for assembly about tubular member 18 as shown in FIGURE 2, permits interlocking of respective tongues and slots as shown in final assembly in FIGURE 1. Each of half sleeve members 12 and 14 is snapped into position on tubular member 18 in the above mentioned interlocking relationship. Sleeve members 12 and 14 are made of a resilient material (e.g. Iconel 750). Also, sleeve members 12 and 14 have an inside diameter equal to or less than the outside diameter of inner tubing member 18, and sleeve members 12 and 14 are structured to encircle (by means of the tongue 40 extending circumferentially to grip the back side of inner tubing members 18) more than half the circumference of inner tubing member 18 so that sleeve members 12 and 14 may each be snapped into position on the inner tubing member 18 by springing the half sleeve to a larger diameter. Since outer loop clamp 16 (as seen in FIGURE 1) is looser on sleeve members 12 and 14 than sleeve members 12 and 14 on inner tubing 18, loop clamp 16 is thereby permitted to move more easily along the longitudinal axis of sleeve members 12 and 14 while sleeve members 12 and 14 motion is more restricted along the longitudinal axis of tube member 18, resulting in wear due to vibration and/or motion occuring on loop clamp 16 and sleeve members 12 and 14, and not on tubular member 18, thereby importantly extending the life of tubular member 18. Although sleeve members 12 and 14 firmly grip tubular member 18 and do not normally move, in an extreme and unexpected case of vibration and/or motion, sleeve members 12 and 14 would move along tubular member 18 to an amount depending upon the tightening force applied to and by loop clamp 16. Such motion could cause the entire tube clamp assembly 10 to move on tubular member 18 if the assembly was not properly installed with loop clamp 16 not centred in the saddle region midway between end shoulders 24 and 26 but improperly against one of end shoulders 24 and 26. When properly positioned in the saddle region, loop clamp 16 will tend to automatically maintain its position midway between shoulders 24 and 26.
An end view of the assembly 10 of FIG URE 1 taken along line 3-3 is shown in FIGURE 3 shows of end shoulders 24 and 28 which are of larger outer diameter than the outer diameter of cylindrically shaped half sleeve members 12 and 14.
The sectional view of FIGURE 4 taken along line 4-4 of FIGURE 1 is believed helpful in showing the aforementioned interlocking tongue-slot relationship of cylindrically shaped half sleeve members 12 and 14 when snapped onto tubular member 18. It should be noted that failure in tightness of loop clamp 16 will not result in loss of the grip between tubular member 18 and half sleeve members 12 and 14 since cylindrically shaped half sleeve members 12 and 14 are retained on tubular member 18 by snap on action.
WHAT WE CLAIM IS: 1. A method of supporting a tube on a fixed structure comprising the steps of: protecting the clamped portion of the tube with a split sleeve by interlocking opposing halves
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (4)

**WARNING** start of CLMS field may overlap end of DESC **. In order that the present invention may be readily understood, the following embodiment will be described by way of example with reference to the accompanying drawing, on which: FIGURE 1 is a view, after assembly, of the tube clamp attaching a tube to supporting structure therefor; FIGURE 2 is a view in perspective prior to assembly of tube clamp half sleeves showing their manner of organization about a conduit to be supported; FIGURE 3 is an end view in section seen along the line 3-3 of FIGURE 1 showing the cylindrically shaped half sleeve members and their saddle forming end shoulders; and, FIGURE 4 is a mid section view of the clamp along line 4-4 of FIGURE 1 showing the interlocking relationship of mating center tabs of each of the cylindrically shaped half sleeve members. Turning now to FIGURE 1, it will be noted that the tube clamp indicated generally at 10 comprises three parts, viz. a pair of generally cylindrically shaped half sleeve members 12 and 14, and a surrounding loop clamp 16 for supporting the half sleeve members 12 and 14 about inner tubing membe rl 8, loop clamp 16 providing the holding support to main structure 20 for tube member 18, loop clamp 16 providing the holding ally outwardly extending end shoulders 24 and 26 of cylindrically shaped half sleeve member 12 and radially outwardly extending end shoulders 28 and 30 of cylindrically shaped sleeve half member 14 (the lower half of sleeve member as shown in FIGURE 1 ì which provide a saddle seating region therebetween for seating of loop clamp 16. Turning now to FIGURE 2, the two interchangeable and identically shaped cylindrically shaped half sleeve members 12 and 14 have an inside diameter substantially equal to or slightly less than the outside diameter of tube 18. Cylindrically shaped half sleeve member 12 has a tongue 40 located at the center of, and extending outward circumferentially from, a first longitudinal side 41 of half sleeve member 12, the second longitudinal side 43 of half sleeve member 12 having a slot 44 at the center thereof. Facing cylindrically shaped half sleeve member 14, identically dimensioned and structured, also has a tongue 49 and slot 52 which when positioned for assembly about tubular member 18 as shown in FIGURE 2, permits interlocking of respective tongues and slots as shown in final assembly in FIGURE 1. Each of half sleeve members 12 and 14 is snapped into position on tubular member 18 in the above mentioned interlocking relationship. Sleeve members 12 and 14 are made of a resilient material (e.g. Iconel 750). Also, sleeve members 12 and 14 have an inside diameter equal to or less than the outside diameter of inner tubing member 18, and sleeve members 12 and 14 are structured to encircle (by means of the tongue 40 extending circumferentially to grip the back side of inner tubing members 18) more than half the circumference of inner tubing member 18 so that sleeve members 12 and 14 may each be snapped into position on the inner tubing member 18 by springing the half sleeve to a larger diameter. Since outer loop clamp 16 (as seen in FIGURE 1) is looser on sleeve members 12 and 14 than sleeve members 12 and 14 on inner tubing 18, loop clamp 16 is thereby permitted to move more easily along the longitudinal axis of sleeve members 12 and 14 while sleeve members 12 and 14 motion is more restricted along the longitudinal axis of tube member 18, resulting in wear due to vibration and/or motion occuring on loop clamp 16 and sleeve members 12 and 14, and not on tubular member 18, thereby importantly extending the life of tubular member 18. Although sleeve members 12 and 14 firmly grip tubular member 18 and do not normally move, in an extreme and unexpected case of vibration and/or motion, sleeve members 12 and 14 would move along tubular member 18 to an amount depending upon the tightening force applied to and by loop clamp 16. Such motion could cause the entire tube clamp assembly 10 to move on tubular member 18 if the assembly was not properly installed with loop clamp 16 not centred in the saddle region midway between end shoulders 24 and 26 but improperly against one of end shoulders 24 and 26. When properly positioned in the saddle region, loop clamp 16 will tend to automatically maintain its position midway between shoulders 24 and 26. An end view of the assembly 10 of FIG URE 1 taken along line 3-3 is shown in FIGURE 3 shows of end shoulders 24 and 28 which are of larger outer diameter than the outer diameter of cylindrically shaped half sleeve members 12 and 14. The sectional view of FIGURE 4 taken along line 4-4 of FIGURE 1 is believed helpful in showing the aforementioned interlocking tongue-slot relationship of cylindrically shaped half sleeve members 12 and 14 when snapped onto tubular member 18. It should be noted that failure in tightness of loop clamp 16 will not result in loss of the grip between tubular member 18 and half sleeve members 12 and 14 since cylindrically shaped half sleeve members 12 and 14 are retained on tubular member 18 by snap on action. WHAT WE CLAIM IS:
1. A method of supporting a tube on a fixed structure comprising the steps of: protecting the clamped portion of the tube with a split sleeve by interlocking opposing halves
of said sleeve around said tube in a spring fit so that axial displacement of the sleeve along the tube is frictionally resisted; mounting said sleeve in a loop clamp the width of which is less than the distance between end shoulders of said sleeve and the clamp in operation being arranged to compress the outside sleeve of the sleeve between the end shoulders so that axial displacement of said sleeve in said clamp is frictionally resisted; the outside diameter of the tube and the inside diameter of the sleeve being such that in operation the frictional resistance to displacement of said sleeve on the tube is greater than said frictional resistance to displacement of said sleeve in said clamp; and attaching said clamp to the fixed structure.
2. Clamping apparatus for supporting a metal tube on a fixed structure, the apparatus comprising a split sleeve arranged to circumferentially surround the tube, said sleeve having identical, interlocking halves, each said half having at least one tongue and at least one slot adapted to interlock with the slot and tongue respectively of the other half and raised shoulders at its ends, and a loop clamp adapted to surround the split sleeve between the end shoulders and to attach to the fixed structure, said interlocking tongues extending cylindrically from each interlocking half whereby each half cylindrically surrounds more than 180 of the tube circumference when in use, said sleeve halves being adapted to be snapped into place to be installed onto the tube whereby axial displacement of said sleeve along said tube when in use is frictionally resisted by the spring clamp action of each part of said split sleeve, the width of said loop clamp being less than the distance between said end shoulders of said split sleeve, so that said sleeve can be displaced axially in said surrounding loop clamp, and the inside diameter of said loop clamp being such that in operation the loop clamp is a compression fit around the outside of said sleeve so that said axial displacement between said sleeve and said loop clamp is frictionally resisted, the relative diameters of the apparatus being arranged such that the frictional resistance between said loop clamp and said sleeve is less than the frictional resistance between said sleeve and the metal tube.
3. A clamping apparatus for supporting a metal tube from fixed structure substantially as herein described with reference to the accompanying drawings.
4. A method of supporting a tube from fixed structure substantially as herein described with reference to the accompanying drawings.
GB5283476A 1976-12-17 1976-12-17 Tube clamp Expired GB1564357A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB5283476A GB1564357A (en) 1976-12-17 1976-12-17 Tube clamp
FR7639736A FR2376320A1 (en) 1976-12-17 1976-12-31 TUBE CLAMP

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB5283476A GB1564357A (en) 1976-12-17 1976-12-17 Tube clamp
FR7639736A FR2376320A1 (en) 1976-12-17 1976-12-31 TUBE CLAMP

Publications (1)

Publication Number Publication Date
GB1564357A true GB1564357A (en) 1980-04-10

Family

ID=26219778

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5283476A Expired GB1564357A (en) 1976-12-17 1976-12-17 Tube clamp

Country Status (2)

Country Link
FR (1) FR2376320A1 (en)
GB (1) GB1564357A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2472073A (en) * 2009-07-23 2011-01-26 D C Norris & Company Ltd Pipe clamp

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2591514B1 (en) * 1985-12-12 1989-03-03 Tissot Eugene METHOD FOR PRODUCING ANNULAR BOSSES ON A WATER LOWERING PIPE, DEVICE FOR IMPLEMENTING SAME AND PIPE OBTAINED
FR2697297B1 (en) * 1992-10-26 1995-01-27 Georges Jarlier Clamping device for a rainwater evacuation pipe.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2393033A (en) * 1942-05-06 1946-01-15 Adel Prec Products Corp Conduit supporting clip
GB882653A (en) * 1958-04-29 1961-11-15 John Davis And Son Derby Ltd Improvements in and relating to pull-wire signalling systems for use in mines, quarries and the like
CH436876A (en) * 1964-06-22 1967-05-31 Zimmermann Hans Pipe clamp

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2472073A (en) * 2009-07-23 2011-01-26 D C Norris & Company Ltd Pipe clamp
GB2472073B (en) * 2009-07-23 2014-10-08 D C Norris & Company Ltd Pipe clamps and the like

Also Published As

Publication number Publication date
FR2376320A1 (en) 1978-07-28
FR2376320B1 (en) 1983-02-04

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee