GB2161570A - End fitting for resilient pipe - Google Patents
End fitting for resilient pipe Download PDFInfo
- Publication number
- GB2161570A GB2161570A GB08517458A GB8517458A GB2161570A GB 2161570 A GB2161570 A GB 2161570A GB 08517458 A GB08517458 A GB 08517458A GB 8517458 A GB8517458 A GB 8517458A GB 2161570 A GB2161570 A GB 2161570A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pressure ring
- ring
- fitting
- pressure
- end fitting
- 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
- 230000000063 preceeding effect Effects 0.000 claims 2
- 230000000295 complement effect Effects 0.000 claims 1
- 229920003023 plastic Polymers 0.000 abstract description 4
- 239000004033 plastic Substances 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
- F16L33/02—Hose-clips
- F16L33/025—Hose-clips tightened by deforming radially extending loops or folds
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints That Cut Off Fluids, And Hose Joints (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
An end fitting for a resilient pipe, e.g. a plastics hose, has a deformable pressure ring 3 pre- assembled to the body 1 of the fitting and a tension ring located in a groove of the pressure ring. The end of a resilient pipe may be quickly clamped into the fitting by circumferential tightening of the tension ring to effect a radially inwardly directed pressure through the pressure ring 3 to clamp the pipe between the ring 3 and a tubular cylindrical projection 6 of the fitting. The pressure ring 3 is preferably attached to the body 1 by means of a deformable end flange having a shoulder 2 engaging in a co-operating recess. <IMAGE>
Description
SPECIFICATION
End fitting for a resilient pipe
This invention relates to an end fitting for a resilient pipe, e.g. a plastics hose, wherein the fitting comprises a body of tubular form having an outer end for connection to a cooperating fluid delivery or receiving member and an inner end comprising a tubular cylindrical projection engagable within the end of the resilient pipe, a deformable pressure ring engagable with the exterior of the pipe around the said cylindrical projection and a clamping element located around the pressure ring for applying radially inwardly directed pressure to the pressure ring, and hence to the pipe, to clamp the pipe between the pressure ring and the cylindrical projection. End fittings of this type are hereinafter referred to as being of the kind specified.
End fittings of the kind specified are disclosed for example in French Patent Specification 1177068 and British Patent Specification 967490 but in both of these specifications the radially inwardly directed pressure is taught as being applied to a detachable pressure ring by means of a detachable screw threaded element engagable with the body of the fitting whereby, upon tightening of the screw threaded element onto the body of the fitting, the said radial pressure is applied to clamp the pipe.
It is an object of the present invention to provide an end fitting of the kind specified wherein the pressure ring and the clamping element are pre-assembled to the body of the fitting whereby the fitting may be quickly and efficiently utilised for clamping an end of a resilient pipe thereto.
In accordance with the invention there is provided an end fitting of the kind specified wherein the pressure ring is attached to the body of the fitting and the clamping element comprises a tension ring located in a groove on the exterior surface of the pressure ring whereby, when the end of a resilient pipe is received between the cylindrical projection and the pressure ring, radially inwardly directed clamping pressg located in a groove on the exterior surface of the pressure ring whereby, when the end of a resilient pipe is received between the cylindrical projection and the pressure ring, radially inwardly directed clamping pressure may be applied to the pressure ring by circumferential tensioning of the tension ring about the pressure ring.
Conveniently the pressure ring is attached to the body of the fitting by means of a deformable annular end flange of the pressure riaxis of the pressure ring, the tension ring being tensionable at a position coincident with that part of the pressure ring having maximum eccentricity to apply a radially inwardly directed pressure to the pressure ring.
Preferably means are provided on the exterior surface of the pressure ring within said groove for preventing circumferential movement of the tension ring about the pressure ring.
Other features of the invention will become apparent from the following description which is given herein solely by way of example with reference to the accompaying drawings wherein:
Figure 1 is a partial longitudinal crosssection through an end fitting constructed in accordance with the invention showing the end of a resilient pipe clamped to the end fitting;
Figure 2 is a transverse cross-sectional view of the fitting and pipe of Fig. 1 taken in the direction of the arrows; and
Figure 3 is a partial longitudinal crosssection of an end fitting constructed in accordance with the invention without the pipe clamped thereto.
Referring to the drawings, the end fitting comprises a generally tubular body formed of metal having an outer end with an exterior screw threaded formation for attachment to a cooperating fluid delivery or receiving device.
The inner end of the body comprises an integral cylindrical projection 6 engagable, as shown in Figs. 1 and 2, within the end of a resilient pipe 5. The pipe 5, in practice, will usually be a resilient plastics hose such as may be used in an hydraulic fitting.
Around the cylindrical projection 6 there is located a deformable pressure ring 3 conveniently formed of a plastics material and having a continuous circumferentially extending groove 4 formed in its radially outer surface for receiving a clamping element in the form of a tension ring 8 as will be further described.
The inner end of the pressure ring 3 is provided with a deformable annular end flange extending axially of the pressure ring and having a radially inwardly directed annular shoulder 2 whereby the pressure ring may be pre-assembled to the body 1 of the fitting by a "snap-in" attachment of the shoulder 2 within a cooperating recess of the body of the fitting.
As will be clearly seen from Fig. 2 of the drawings, the thickness of the pressure ring within the groove 4 is non-uniform whereby the radially outer surface of the groove 4 is eccentric relative to the central longitudinally extending axis of the ring 3. At its part of maximum eccentricity, the pressure ring 3 is provided with an axially extending rib 11 within the groove 4.
The tension ring 8 comprises a metal band of generally circular form but having a Ushaped tensioning portion 7 which, when assembled on the pressure ring 3, is coincident with that part of the pressure ring having maximum eccentricity. The tensioning portion 7 comprises an integral part of the tension ring 8 providing a part of the ring which is deformable circumferentially thereof by an appropriate tightening tool to tension the ring 8 about the pressure ring 3 and hence apply a radially inwardly directed pressure to the pressure ring 3 and hence to the end of the pipe 5 located between the ring 3 and the cylindrical projection 6. The aforesaid rib 11 within the groove 4 prevents inadvertent circumferential displacement of the tension ring 8 about the pressure ring 3.
The eccentricity of the radially outer surface (i.e. the base) of the groove 4 ensures that, when the tension ring 8 is tightened by portion 7 at the part of maximum eccentricity, a uniform radially inwardly directed pressure is transmitted to the ring 3 to clamp the pipe 5.
A set of cooperating ribs 9 and 10 are formed respectively on the radially outer surface of the projection 6 and the radially inner surface of the pressure ring 3 for assisting in gripping the end of the pipe 5.
An end fitting constructed in accordance with the invention, as supplied to the user, is shown in Fig. 3 of the drawings wherein all of the parts thereof are pre-assembled one to another. Thus, in the pre-assembled condition, the pressure ring 3 has been "snap-fitted" to the body 1 and the tension ring 8 has been pre-located within the groove 4 of the pressure ring. In use, all that is required is for the end of the resilient pipe to be pushed into the annular space defined between the radially outer surface of the projection 6 and the radially inner surface of the pressure ring 3 followed by an appropriate degree of tensioning of the tension ring 8 to clamp the pipe in position.
Claims (6)
1. An end fitting of the kind specified wherein the pressure ring is attached to the body of the fitting and the clamping element comprises a tension ring located in a groove on the exterior surface of the pressure ring whereby, when the end of a resilient pipe is received between the cylindrical projection and the pressure ring, radially inwardly directed clamping pressure may be applied to the pressure ring by circumferential tensioning of the tension ring about the pressure ring.
2. An end fitting as claimed in Claim 1 wherein the pressure ring is attached to the body of the fitting by means of a deformable annular end flange of the pressure ring having a shoulder engaged within a cooperating recess of the body of the fitting.
3. An end fitting as claimed in either one of Claims 1 or 2 wherein the radially outer surface of the groove in the pressure ring is eccentric relative to the central longitudinally extending axis of the pressure ring and the tension ring is tensionable at a position coincident with that part of the pressure ring having maximum eccentricity to apply radially inwardly directed pressure to be pressure ring.
4. An end fitting as claimed in any one of the preceeding claims wherein means are provided on the exterior surface of the pressure ring within said groove for preventing circumferential movement of the tension ring about the pressure ring.
5. An end fitting as claimed in any one of the preceeding claims wherein the radially outer surface of the cylindrical projection and the radially inner surface of the pressure ring are each provided with complementary projections for gripping the end of the resilient pipe received therebetween.
6. An end fitting. of the kind specified constructed and arranged substantially as hereinbefore described with reference to the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3425879A DE3425879C1 (en) | 1984-07-13 | 1984-07-13 | Pipe connection |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8517458D0 GB8517458D0 (en) | 1985-08-14 |
| GB2161570A true GB2161570A (en) | 1986-01-15 |
| GB2161570B GB2161570B (en) | 1988-05-05 |
Family
ID=6240583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08517458A Expired GB2161570B (en) | 1984-07-13 | 1985-07-10 | End fitting for resilient pipe |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE3425879C1 (en) |
| FR (1) | FR2567617B1 (en) |
| GB (1) | GB2161570B (en) |
| IT (3) | IT8505161A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110163537A1 (en) * | 2010-01-05 | 2011-07-07 | Geberit International Ag | Pipe clamp |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19533553C2 (en) * | 1995-09-11 | 1998-01-29 | Rasmussen Gmbh | Device for clamping a hose end section pushed onto a pipe end section |
| DE19741641C2 (en) * | 1997-09-22 | 2000-11-23 | Wavin Bv | Connection device for a pipe or hose part |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB940412A (en) * | 1961-04-11 | 1963-10-30 | French & Collett Ltd | Improvements in or relating to flexible hose fittings |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH405027A (en) * | 1963-01-29 | 1965-12-31 | Oetiker Hans | Hose clamp |
| GB967490A (en) * | 1963-02-20 | 1964-08-19 | Hozelock Ltd | Improvements in tap connectors |
| NL6609891A (en) * | 1966-07-14 | 1968-01-15 | ||
| US3589752A (en) * | 1969-07-28 | 1971-06-29 | Caterpillar Tractor Co | Mechanical joined hose coupling of extruded components |
| US4312101A (en) * | 1978-09-26 | 1982-01-26 | Hans Oetiker | Hose clamp with insert member |
-
1984
- 1984-07-13 DE DE3425879A patent/DE3425879C1/en not_active Expired
-
1985
- 1985-05-02 IT IT1985A05161A patent/IT8505161A1/en unknown
- 1985-05-02 IT IT856985U patent/IT8506985V0/en unknown
- 1985-05-02 IT IT05161/85A patent/IT1186298B/en active
- 1985-07-10 GB GB08517458A patent/GB2161570B/en not_active Expired
- 1985-07-12 FR FR8510748A patent/FR2567617B1/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB940412A (en) * | 1961-04-11 | 1963-10-30 | French & Collett Ltd | Improvements in or relating to flexible hose fittings |
Non-Patent Citations (1)
| Title |
|---|
| WO A1 86/01575 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110163537A1 (en) * | 2010-01-05 | 2011-07-07 | Geberit International Ag | Pipe clamp |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2161570B (en) | 1988-05-05 |
| IT8506985V0 (en) | 1985-05-02 |
| DE3425879C1 (en) | 1985-10-10 |
| IT8505161A1 (en) | 1986-11-02 |
| FR2567617A1 (en) | 1986-01-17 |
| GB8517458D0 (en) | 1985-08-14 |
| FR2567617B1 (en) | 1987-04-17 |
| IT1186298B (en) | 1987-11-18 |
| IT8505161A0 (en) | 1985-05-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |