EP1588087A2 - Stabilizer-seal-insert for push-in tube couplings - Google Patents
Stabilizer-seal-insert for push-in tube couplingsInfo
- Publication number
- EP1588087A2 EP1588087A2 EP04700924A EP04700924A EP1588087A2 EP 1588087 A2 EP1588087 A2 EP 1588087A2 EP 04700924 A EP04700924 A EP 04700924A EP 04700924 A EP04700924 A EP 04700924A EP 1588087 A2 EP1588087 A2 EP 1588087A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- insert
- coupling
- tube
- seal
- base
- 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.)
- Withdrawn
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
- F16L37/00—Couplings of the quick-acting type
- F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
- F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
- F16L37/092—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector
- F16L37/0925—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector with rings which bite into the wall of the pipe
-
- 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
- F16L37/00—Couplings of the quick-acting type
- F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
- F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
- F16L37/092—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector
- F16L37/0927—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector the wedge element being axially displaceable for releasing the coupling
Definitions
- the field of the invention is tube couplings, especially push-in plastic tube couplings.
- Push-in tube couplings typically employ a sliding collet to hold a pipe or other tube in a sleeve.
- the collet contains inwardly facing claws or teeth that engage the exterior surface of the tube, and thereby oppose a pullout force on the tube.
- the engagement can usually be released by sliding the collet into the coupling, towards the proximal end of the tube.
- Sealing in push-in tube couplings is provided by one or more "O"-rings positioned between the exterior surface of the tube and the inner surface of a sleeve portion of the coupling.
- Push-in tube couplings are readily available in inline, elbow, T, and tube closures configurations. Such couplings have the advantage of quick connection / disconnection, and are often able to withstand significant pressures and relatively high temperatures.
- the seal is necessarily impermanent. Indeed, the seal can often be comprised in a fairly simple manner, such as by using tubing that has a deformed end, or excessively flexing the tubing near the .coupling.
- These problems have been addressed in various ways, including increasing the axial length of the sleeve, and by inserting a stiffener into the inserted end of the tubing. In the latter case, it is known to utilize stiffeners that are fitted to the tubing prior to insertion into the sleeve (extrinsic stiffeners), and also to provide couplings in which the stiffener forms part of the coupling (integral stiffeners). Examples are shown in Volgstadt et al. patents 4282175 and 4229025 (Aug. 1981 and Oct. 1980, respectively), the disclosures of which are incorporated herein by reference.
- the present invention provides a factory pre-installed tube insert for a push-in type tube coupling.
- the insert can be integrally formed as part of the coupling, or included as a separate piece in the coupling.
- the insert preferably has at least one secondary seal, which is advantageously disposed around the base of the insert and/or around the shaft of the insert.
- the base is preferably chamfered base to facilitate insertion of the insert into the coupling, and can advantageously have a shoulder that cooperates with a retaining ring of the coupling to impede accidental removal of the insert from the coupling.
- the seals are preferably "O" rings, of any suitable size and material.
- Figure 1 is a vertical cross-section of a coupling having an integral stiffener.
- Figure 2 is a vertical cross-section of the stiffener of figure 1.
- Figure 1 generally depicts a coupling 1 into which has been inserted tube 2.
- Coupling 1 generally includes a body 10 with integrally molded sleeve portions 12A and 12B and end caps 14A, 14B, and collets 16A, 16B.
- Tube 2 is inserted in to sleeve 12B.
- Each of the sleeves 12A, 12B has a primary "O"-ring 18A, 18B, a washer 20A, 20B, a tube stop 22 A, 22B, and shoulders 24A, 24B, respectively.
- "0" rings 18 A, 18B which are supported and positioned by the corresponding internal shoulders 19 A, 19B in the coupling 1, are considered “primary” because they seal a tube directly against the coupling.
- "0" ring 18B simultaneously engages the outer surface of tube 2 and the inner surface of sleeve 12B to form an air and liquid-tight seal around the outer surface of tube 2.
- Tube stop 22B limits the depth to which tube 2 can be inserted into sleeve 12C.
- the washers 20A, 20B protect the corresponding "0" rings 18A, 18B from coming in contact with the respective collets 16 A, 16B during insertion of a tube.
- Each of the end caps 14A, 14B has a tapered inner cam surface 15 A, 15B that receives one of the collets 16A, 16B.
- Each of the collets 16 A, 16B has a plurality of circumferentially disposed resilient arms 17A, 17B with claws or teeth (not shown) for holding a tube.
- collet 16B is compressed against tube 2 by a slight withdrawal of the tube 2 from the coupling 1. The tube 2 can be released by depressing collet 16B back towards the inserted end of the tube.
- Insert 30 has an outside diameter that approximates the inside diameter of the tube 2.
- insert 30 also generally includes a stem 32 having a base 34, and a retaining indentation or race 36 that receives a secondary "O"-ring 38.
- the "O"-ring 38 provides a seal between the inter surface of the tube 2 and the outer surface of insert 30.
- Insert 30 also contains another secondary "O"-ring 40, situated near the base of the insert. "O"-ring 40 seals the outer surface of insert 30 against the inner surface of the base of sleeve 12B. Only one of secondary "O"-rings 38, 40 is needed, but inclusion of both is preferred.
- the inventive inserts have one or both of the secondary "O" rings 38, 40 to help prevent leaks where the primary "O"-rings 18 A, 18B are compromised, and those secondary seals would tend to protected from damage or dirt during insertion of the tube into the coupling.
- These rings are considered “secondary” because they seal something other than the tube directly against the coupling.
- insert 30 can be viewed as being integrally molded with sleeve 12B.
- insert 30 could be inserted into end of a tube prior to insertion of the tube into the coupling 1.
- the base of the insert would typically seat against tube stop 22 A when the tube is inserted into the sleeve.
- the insert 30 may then travel inside the sleeve 12A from the tube stop 22A to the internal shoulder 24A.
- "O"-ring seal 40 would then advantageously prevent liquid and gasses from passing between the base of the insert 30 and the inner surface of the sleeve 12 A.
- insert 30 could be fitted into the coupling as a separate piece.
- end base 34 of insert 30 has a chamfer 42 that facilitates insertion of the insert 30 through the "O"-ring 18A during assembly of the coupling.
- insert 30 may be accidentally pulled out of the sleeve 12A when the tube is removed from the coupling.
- a retaining ring 26A, 26B is disposed into sleeves 12 A, 12B, respectively, in a position that cooperates with a shoulder 35 of base 34 to prevent such removal.
- the various "O" rings described herein, 18 A, 18B, 38, 40 can advantageously comprise rubber, silicone, sanoprene at about 60 shore, or any other suitably deformable material or materials.
- selection of the particular materials used, as well as the sizes used, lies well within the skill of those in the field.
- the entire insert 30, including integrally molded circumferential bosses can be sanoprene or similar material, preferably at a hardness of about 80 shore. I-n that manner the integrally molded circumferential bosses substitute for separately installed "O" ring parts, saving on costs.
- tube or what is regarded herein as its equivalent, “tubing”, contemplates all manner of tube, including especially those comprising polyvinyl chloride (PNC), polyurethane, polypropylene, and/or all other suitable polymer materials.
- PNC polyvinyl chloride
- a wide range of tube sizes is also contemplated, including those having external diameters from 2 mm to 30 mm, inclusive.
- contemplated couplings and inserts can be made from any suitable material, and have any suitable size and configuration. It is especially contemplated that couplings include inline, elbow, T, and tube closures configurations.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
- Joints With Sleeves (AREA)
Abstract
Description
Claims
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US43905303P | 2003-01-08 | 2003-01-08 | |
US439053P | 2003-01-08 | ||
US44536303P | 2003-02-05 | 2003-02-05 | |
US445363P | 2003-02-05 | ||
PCT/US2004/000599 WO2004063614A2 (en) | 2003-01-08 | 2004-01-08 | Stabilizer-seal-insert for push-in tube couplings |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1588087A2 true EP1588087A2 (en) | 2005-10-26 |
EP1588087A4 EP1588087A4 (en) | 2006-06-14 |
Family
ID=32718041
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04700924A Withdrawn EP1588087A4 (en) | 2003-01-08 | 2004-01-08 | Stabilizer-seal-insert for push-in tube couplings |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1588087A4 (en) |
WO (1) | WO2004063614A2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2431209A (en) * | 2005-10-14 | 2007-04-18 | Hepworth Building Prod | Pipe insert for multi-layered pipe |
US10174874B2 (en) | 2016-10-12 | 2019-01-08 | Honeywell International Inc | Pipe fitting with inner and outer seals |
US11725763B2 (en) | 2019-11-21 | 2023-08-15 | Honeywell International Inc. | Pipe fitting with inner and outer seals |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8406956U1 (en) * | 1984-03-07 | 1984-05-30 | Viegener II, Franz, 5952 Attendorn | CLAMP CONNECTOR FOR THE PRESSURE-TIGHT AND SOLUBLE CONNECTING OF TUBES MADE OF FLEXIBLE MATERIAL, ESPECIALLY FOR PLASTIC PIPES |
US6170887B1 (en) * | 1999-07-26 | 2001-01-09 | Armaturenfabrik Hermann Voss Gmbh + Co. | Plug connector for rapid and releaseable connection of pressurized lines |
-
2004
- 2004-01-08 EP EP04700924A patent/EP1588087A4/en not_active Withdrawn
- 2004-01-08 WO PCT/US2004/000599 patent/WO2004063614A2/en not_active Application Discontinuation
Non-Patent Citations (2)
Title |
---|
No further relevant documents disclosed * |
See also references of WO2004063614A2 * |
Also Published As
Publication number | Publication date |
---|---|
EP1588087A4 (en) | 2006-06-14 |
WO2004063614A2 (en) | 2004-07-29 |
WO2004063614A3 (en) | 2005-04-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5181751A (en) | Quick connector | |
US6345844B1 (en) | Connector | |
US5474336A (en) | Quick connect tube couplings | |
EP1032785B1 (en) | Pipe connections | |
KR100989423B1 (en) | Sealing member and pipe | |
JPH028589A (en) | Pipe coupler | |
JP2003294184A (en) | Quick connector | |
US11287071B2 (en) | Quick connect device for connecting tubular members | |
AU1642701A (en) | Improvements in or relating to moulded plastics tubular couplings | |
EP1368590B1 (en) | Pipe coupling | |
EP1588087A2 (en) | Stabilizer-seal-insert for push-in tube couplings | |
JP5581079B2 (en) | Pipe fitting | |
US20230100312A1 (en) | Quick connector | |
WO2016179492A1 (en) | Quick connect coupling | |
EP0459797B1 (en) | Pipe joints and couplings | |
JP7483870B2 (en) | Quick Connector | |
US20170059071A1 (en) | Pipe connector for connecting a fuel line of a fuel supply for a motor vehicle engine | |
GB2196403A (en) | Improvements in or relating to pipe fittings | |
EP0609027B1 (en) | Protective end piece for tubes | |
CN211738353U (en) | Sealing washer anti-cutting structure and quick-operation joint | |
RU2800758C1 (en) | Quick connector | |
KR100965922B1 (en) | Coupling for a fluid line arrangement | |
CN220379104U (en) | Waterproof ring for pipeline clamping connection | |
JP7231733B2 (en) | Multi-part connector assembly | |
JP2016090046A (en) | Joint and joint installation structure |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK |
|
17P | Request for examination filed |
Effective date: 20050907 |
|
DAX | Request for extension of the european patent (deleted) | ||
A4 | Supplementary search report drawn up and despatched |
Effective date: 20060424 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: F16L 37/098 20060101ALN20060418BHEP Ipc: F16L 37/00 20060101AFI20060418BHEP |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20060726 |