CA2110501A1 - Pipe elbow - Google Patents
Pipe elbowInfo
- Publication number
- CA2110501A1 CA2110501A1 CA002110501A CA2110501A CA2110501A1 CA 2110501 A1 CA2110501 A1 CA 2110501A1 CA 002110501 A CA002110501 A CA 002110501A CA 2110501 A CA2110501 A CA 2110501A CA 2110501 A1 CA2110501 A1 CA 2110501A1
- Authority
- CA
- Canada
- Prior art keywords
- pipe
- length
- elbow
- pipe elbow
- tube
- 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
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
- F16L43/00—Bends; Siphons
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/06—Saliva removers; Accessories therefor
Landscapes
- Health & Medical Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Epidemiology (AREA)
- Dentistry (AREA)
- Mechanical Engineering (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
- Branch Pipes, Bends, And The Like (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Materials For Medical Uses (AREA)
Abstract
In order to form a rotating connection between a dental suction tube and a connector block (10, 11) on a tube-support unit, the pipe elbow proposed has two lengths of pipe (1, 2) disposed at an angle to each other and an externally located support pin (9) lying in the axis of rotation (8) of the first length of pipe (1).
Description
2 1 ~
Wo 93~19695 PCTf~T93~00046 A PIPE ELBOW
The presant invention relates to a pipe elbow, ~rparticùlar for connecting a dental suction tube to a connector block of a tube support unit, with a first length of pipe that can be plugg~d in so as to form a seal and which can be rotated in a coupler [socket end~ and with a second length of pipe that can be connecte~ to th~ suction tub~.
A pipe elbow of this kind is describ~d, for exampla, in EP-A 390 951; this is secured in the coupler of the connector block by means of an O-ring. The axis of rotation is horizontal, so that the conn~cted suction tube hangs downwards and is protected in the connection area despite frequent oscillatory movements~
It is the task o~ the pres~nt invention to improve the swivelling support provided by this kind of piple elbow.
According to the present invention, this has been achieved in th~t it incorporates an outer supporting spigot o~ the a~is of rotation of the f irs~ length oP pipe . Bilateral suppoxt of the pipe elbow is mad~ po~sible because o~ this, ~ecausa ~he supporting spigot can be held in a moun~ing or the likP so as to be able to 8wivel. Th~: eal that fits into the coupllng is only loaded~perpendicularly to the axi5 o~ rotation by the weight of the uspended su~ti~n tube. S~nce neither shearing forc~s nor f~r¢es!that work in the direction of withdrawal ar~ present, rotatability iB al~o impro~ed because o~ the smallex amount o~
friction.
; o ~ :
WO 93/lg695 pcT/A~r93~ooo46 A preferred embodiment is such that it incorporates a shut-off devic~ that is arranged at the corner with a diaphragm that is acted on by a pressure medium, with both lengths of pipes opening out into the pressure surface of ~his. Because of the conf iguration of the diaphragm corner valve, tl~:uction tube can ~e shut off in a very simple manner without any requirement for significantly greater space. The supporting ~pigot can, for instance, project from the cover of the pres~ure chamber of the diaphragm corner valve. If necessary, the pressure medium can also be introduced into the pre~sure chamber through the supporting spigot.
Another embodiment i~; suc:h that the f irst length of pipe is curved and the supporting spigQt proj ects on the outside of the curve. It is preferred that the cuxve of the first length of pipe therl amounts to approximately 4 ~ .
A ~urther pref erred e~bodiment is æuch that wider end areas of both lengths of pipes open out in the pressure surface of the diaphr~gm that is acted upon by a pre~sure medium. Because OI
the approximately funnel-shaped or conic:al widening to the pressure arld sea:l ing surfac:es of the diaphragm it is possible to k~ep the paæsage cross~ sec:tlon at l~ast equal to the cro~s-section of the l~ngth of pipes, even in the diaphragm area, as well, sinc~e the eibow area i enlarged. In ~particular, if the pre~:sure ~urface is confined e sentially to a transition edge betw en the two lengths of pipe~;, khere are no surfaces to impede the flow and on whic:h depo~its of ma~erial that can hinder the contac:t pressure can build up. B~c:ause~ of this, within the~
~ontact pressure area there is only the clamping edge of the diaphra~n and the line of separation between the two lengths of pipe or the funnel surfac~s of the two end areas. This 21~0~0~
WO 93~19695 PCT/A~1!93~00046 embodiment is also possible without a supportiny spigot that lies on the axis of rotation.
Th present invention will be described in greater detail below on the basis of the drawings appended hereto 7 w~out being restricted ther~to~ These drawings show the following:
igure 1: a preferred e~bodiment o~ the pipe elbow according to the pre ent invention in an obli~ue view facing the inner side o~ the elbow;
igure 2: a plan view of the pipe elbow perpendicular to the axis of rotation;
igure 3: an incline view rotated through appr~ximat~ly 90 of the embodiment shown in figure 1 with the valve cham~er open.
A pipe elbow co~prises two lengths O:e pipes 1, 2. Of these, length of pipe 1 is used to connect a coupl~r lo o~ a connecting block and thi~ i5 connect~d to a mounting 11. When used as a pipe elbow for connecting a dantal suction tube, th~: connector block is provided on a tube support unit, when preferably two su¢tion tubes be ins~rted from o~po~ite sides into the conneator block, through two pipe elbows according to the pre~ent inventi~n, these heing rotatable about a common axis.
A supporting spigot 9 i5 locatèd on the axis of rotation B of the first length of!pipe 1; this extends from the wall that i~
opposite the opening o~ length of pipe 1 and is upported either on or in the mounting 11 so as to be able to rotate. Thus~ the pipe elbow has a second ~upporting area that protects th~ push connection and the æeal 5 b~tween the length of pipe 1 and the 21 ~0~1 WO S3/19695 PCT/AT93~00046 coupler 10. The pipe elbow al o has a valve chamber 3 that is inclined relative to the two lengths of pipe 1, 2 and defined by a diaphragm 4 as a s~ut-off de~ice.
Figure 3 shows the pipe elbow with the valve c~er 3 opened.
The end areas 12, 13 of the length of pipes 1, 2 widen out in the mannr of a funnel, or mor~ or less conically to the contact surface ~, which thus forms only a narrow concave transitional step between the two lengths o~ pipes 1, 2. This avoids the formation of deposits that could hinder the seal-type seating of the membrane (not shown herein)~ In addition, the cross-section of the pipe elbow is not restri~ted in the area of the diaphragm, for the pipe elbow is widened by the expansion or widening of the l~ngths of pipe and th~o inside of the elbow. As an example ~ the valve chamber 3 is closed off by a cover (not shown herein) that can be cemented, welded or snapped intc) place and which clamps the diaphragm 4.
A c:onn~ctor 6 is provided ~or the introduc:tion of the pressure medium and this is formed, in particular, on the cover. I~ the pressure in the ~ralve chamber 3 is higher th~n in the length of pipes 1, 2, lthe diaphragm 4 }g pressed against the pressure surface 7 and the passage thrc)ugh the pipe holder is blocked.
If, in c:ontra~t to this t the pre~;~ure is less, then the diaphragm i~; raised from the contac:t æurface 7 and the passage is opened.
Because of th~ fact that th~ cover of the valve chamber 3 lies against ~he outside o~ the elbow, the cQnneator 6 that also serves as the supporting spigot 9, with the pipe elbow then forming a simple curve. In the embodiment that is shown, the 1~3ngkh o~ pipe 1 is curved khrough approximately 45 ~ so that the ~;upporting ~pigot 9 passes the valve cham~er 3 at ~he side. The supporting spigot ~ could also form a branch or feed channel.
2 ~
WO 93/~9695 PC~A~g3/00046 A dent~l ~uction tube can, if necessary, contain an additional line, perhaps in the form of a second tube of smaller diameter.
The pu~h coupling on the suction tube then includes two O-rings and a peripheral groove that runs between these, and in which the intermediat~ tube ends. A pipe elbow that is ~table for conne~ting a suction tube of this kind incorporates a length of pipe 2 which has a second connector 14 in the area that corresponds to the paripheral groove when the suction tube is connected.
If the supporting spigot 6 also forms a channel, the connector 14 can be conne ted to this through a tube or the like but also opens out within the length of pipe 1, into a peripheral groove.
In this way, the additional line can pa~s round the ~hut-off device externally.
.. . ....
Wo 93~19695 PCTf~T93~00046 A PIPE ELBOW
The presant invention relates to a pipe elbow, ~rparticùlar for connecting a dental suction tube to a connector block of a tube support unit, with a first length of pipe that can be plugg~d in so as to form a seal and which can be rotated in a coupler [socket end~ and with a second length of pipe that can be connecte~ to th~ suction tub~.
A pipe elbow of this kind is describ~d, for exampla, in EP-A 390 951; this is secured in the coupler of the connector block by means of an O-ring. The axis of rotation is horizontal, so that the conn~cted suction tube hangs downwards and is protected in the connection area despite frequent oscillatory movements~
It is the task o~ the pres~nt invention to improve the swivelling support provided by this kind of piple elbow.
According to the present invention, this has been achieved in th~t it incorporates an outer supporting spigot o~ the a~is of rotation of the f irs~ length oP pipe . Bilateral suppoxt of the pipe elbow is mad~ po~sible because o~ this, ~ecausa ~he supporting spigot can be held in a moun~ing or the likP so as to be able to 8wivel. Th~: eal that fits into the coupllng is only loaded~perpendicularly to the axi5 o~ rotation by the weight of the uspended su~ti~n tube. S~nce neither shearing forc~s nor f~r¢es!that work in the direction of withdrawal ar~ present, rotatability iB al~o impro~ed because o~ the smallex amount o~
friction.
; o ~ :
WO 93/lg695 pcT/A~r93~ooo46 A preferred embodiment is such that it incorporates a shut-off devic~ that is arranged at the corner with a diaphragm that is acted on by a pressure medium, with both lengths of pipes opening out into the pressure surface of ~his. Because of the conf iguration of the diaphragm corner valve, tl~:uction tube can ~e shut off in a very simple manner without any requirement for significantly greater space. The supporting ~pigot can, for instance, project from the cover of the pres~ure chamber of the diaphragm corner valve. If necessary, the pressure medium can also be introduced into the pre~sure chamber through the supporting spigot.
Another embodiment i~; suc:h that the f irst length of pipe is curved and the supporting spigQt proj ects on the outside of the curve. It is preferred that the cuxve of the first length of pipe therl amounts to approximately 4 ~ .
A ~urther pref erred e~bodiment is æuch that wider end areas of both lengths of pipes open out in the pressure surface of the diaphr~gm that is acted upon by a pre~sure medium. Because OI
the approximately funnel-shaped or conic:al widening to the pressure arld sea:l ing surfac:es of the diaphragm it is possible to k~ep the paæsage cross~ sec:tlon at l~ast equal to the cro~s-section of the l~ngth of pipes, even in the diaphragm area, as well, sinc~e the eibow area i enlarged. In ~particular, if the pre~:sure ~urface is confined e sentially to a transition edge betw en the two lengths of pipe~;, khere are no surfaces to impede the flow and on whic:h depo~its of ma~erial that can hinder the contac:t pressure can build up. B~c:ause~ of this, within the~
~ontact pressure area there is only the clamping edge of the diaphra~n and the line of separation between the two lengths of pipe or the funnel surfac~s of the two end areas. This 21~0~0~
WO 93~19695 PCT/A~1!93~00046 embodiment is also possible without a supportiny spigot that lies on the axis of rotation.
Th present invention will be described in greater detail below on the basis of the drawings appended hereto 7 w~out being restricted ther~to~ These drawings show the following:
igure 1: a preferred e~bodiment o~ the pipe elbow according to the pre ent invention in an obli~ue view facing the inner side o~ the elbow;
igure 2: a plan view of the pipe elbow perpendicular to the axis of rotation;
igure 3: an incline view rotated through appr~ximat~ly 90 of the embodiment shown in figure 1 with the valve cham~er open.
A pipe elbow co~prises two lengths O:e pipes 1, 2. Of these, length of pipe 1 is used to connect a coupl~r lo o~ a connecting block and thi~ i5 connect~d to a mounting 11. When used as a pipe elbow for connecting a dantal suction tube, th~: connector block is provided on a tube support unit, when preferably two su¢tion tubes be ins~rted from o~po~ite sides into the conneator block, through two pipe elbows according to the pre~ent inventi~n, these heing rotatable about a common axis.
A supporting spigot 9 i5 locatèd on the axis of rotation B of the first length of!pipe 1; this extends from the wall that i~
opposite the opening o~ length of pipe 1 and is upported either on or in the mounting 11 so as to be able to rotate. Thus~ the pipe elbow has a second ~upporting area that protects th~ push connection and the æeal 5 b~tween the length of pipe 1 and the 21 ~0~1 WO S3/19695 PCT/AT93~00046 coupler 10. The pipe elbow al o has a valve chamber 3 that is inclined relative to the two lengths of pipe 1, 2 and defined by a diaphragm 4 as a s~ut-off de~ice.
Figure 3 shows the pipe elbow with the valve c~er 3 opened.
The end areas 12, 13 of the length of pipes 1, 2 widen out in the mannr of a funnel, or mor~ or less conically to the contact surface ~, which thus forms only a narrow concave transitional step between the two lengths o~ pipes 1, 2. This avoids the formation of deposits that could hinder the seal-type seating of the membrane (not shown herein)~ In addition, the cross-section of the pipe elbow is not restri~ted in the area of the diaphragm, for the pipe elbow is widened by the expansion or widening of the l~ngths of pipe and th~o inside of the elbow. As an example ~ the valve chamber 3 is closed off by a cover (not shown herein) that can be cemented, welded or snapped intc) place and which clamps the diaphragm 4.
A c:onn~ctor 6 is provided ~or the introduc:tion of the pressure medium and this is formed, in particular, on the cover. I~ the pressure in the ~ralve chamber 3 is higher th~n in the length of pipes 1, 2, lthe diaphragm 4 }g pressed against the pressure surface 7 and the passage thrc)ugh the pipe holder is blocked.
If, in c:ontra~t to this t the pre~;~ure is less, then the diaphragm i~; raised from the contac:t æurface 7 and the passage is opened.
Because of th~ fact that th~ cover of the valve chamber 3 lies against ~he outside o~ the elbow, the cQnneator 6 that also serves as the supporting spigot 9, with the pipe elbow then forming a simple curve. In the embodiment that is shown, the 1~3ngkh o~ pipe 1 is curved khrough approximately 45 ~ so that the ~;upporting ~pigot 9 passes the valve cham~er 3 at ~he side. The supporting spigot ~ could also form a branch or feed channel.
2 ~
WO 93/~9695 PC~A~g3/00046 A dent~l ~uction tube can, if necessary, contain an additional line, perhaps in the form of a second tube of smaller diameter.
The pu~h coupling on the suction tube then includes two O-rings and a peripheral groove that runs between these, and in which the intermediat~ tube ends. A pipe elbow that is ~table for conne~ting a suction tube of this kind incorporates a length of pipe 2 which has a second connector 14 in the area that corresponds to the paripheral groove when the suction tube is connected.
If the supporting spigot 6 also forms a channel, the connector 14 can be conne ted to this through a tube or the like but also opens out within the length of pipe 1, into a peripheral groove.
In this way, the additional line can pa~s round the ~hut-off device externally.
.. . ....
Claims (6)
1. A pipe elbow, in particular for connecting a dental suction tube to a connector block (10, 11) of a tube-support unit, with a first length of pipe 51) that can be connected so as to be able to swivel, and with a second length of pipe (2), characterized in that it incorporates an outer supporting spigot (9) on the axis of rotation (8) of the first length of pipe (1).
2. A pipe elbow as defined in claim 1, characterized in that it incorporates a shut-off device that is arranged at the corner, this having a diaphragm (4) that is acted upon by a pressure medium, both lengths of pipe (1, 2) opening out into the contact surface (7) of this.
3. A pipe elbow as defined in claim 1 and claim 2, characterized in that the first length of pipe (1) is curved and the supporting spigot (9) extends from the outside of the curve.
4. A pipe elbow as defined in claim 3, characterized in that the first length of pipe (1) is curved through approximately 45°.
5. A pipe elbow, in particular as defined in claim 1 to claim 4, for connecting a dental suction tube to a connector block in a tube-support unit, with two lengths of pipes that are disposed at an angle relative to each other, characterized in that it incorporates a shut off device that is arranged at the corner with a diaphragm (4) that is acted upon by a pressure medium, within the contact surface (7) of which the wider end areas (12, 13) of the two lerlgths of pipes (1, 2) open out.
6. A pipe elbow as def ined in claim 2 or claim 5, characterized in that the contact surface (7) is confined essentially to a transition edge between the two lengths of pipes (1, 2).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE9204544U DE9204544U1 (en) | 1992-04-02 | 1992-04-02 | Pipe elbow |
| DEG9204544.8U | 1992-04-02 | ||
| PCT/AT1993/000046 WO1993019695A1 (en) | 1992-04-02 | 1993-03-15 | Pipe elbow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2110501A1 true CA2110501A1 (en) | 1993-10-14 |
Family
ID=6878066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002110501A Abandoned CA2110501A1 (en) | 1992-04-02 | 1993-03-15 | Pipe elbow |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0587833B1 (en) |
| JP (1) | JPH06508292A (en) |
| AT (1) | ATE167796T1 (en) |
| AU (1) | AU3620893A (en) |
| CA (1) | CA2110501A1 (en) |
| DE (2) | DE9204544U1 (en) |
| WO (1) | WO1993019695A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT399452B (en) * | 1992-04-02 | 1995-05-26 | Trawoeger Werner | SUCTION HANDPIECE FOR DENTAL SUCTION SYSTEMS |
| CN102168772B (en) * | 2011-02-24 | 2012-10-31 | 中国石油天然气股份有限公司吉林石化分公司 | Rotation supporting mechanism of gas phase method full-density polyethylene reactor outlet elbow |
| JP2023162846A (en) * | 2022-04-27 | 2023-11-09 | 株式会社東京技研 | Dental extraoral suction arm and dental extraoral suction system |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4181330A (en) * | 1977-03-22 | 1980-01-01 | Noriatsu Kojima | Horn shaped multi-inlet pipe fitting |
| US4289129A (en) * | 1979-11-01 | 1981-09-15 | Turner Roger S | Injection site apparatus |
| DE3409954A1 (en) * | 1984-03-17 | 1985-09-26 | Miele & Cie GmbH & Co, 4830 Gütersloh | Discharge hose for washing machines and dishwashers |
| AT391814B (en) * | 1988-11-22 | 1990-12-10 | Hirnich Paul | CONNECTING PIECE FOR AN INFUSION DEVICE OD. DGL. |
| CH678096A5 (en) * | 1988-12-09 | 1991-07-31 | Fischer Ag Georg | |
| DE58904845D1 (en) * | 1989-04-06 | 1993-08-05 | Siemens Ag | DENTAL SUCTION HANDPIECE. |
| EP0438583A1 (en) * | 1989-08-04 | 1991-07-31 | Nellcor Incorporated | Improved airway adapter with purge means |
| US5027809A (en) * | 1990-05-17 | 1991-07-02 | Robinson Pat D | "Peeper" performance hand held nebuilizer attachment with adjustability of expiratory pressures and expiratory restriction |
| US5016923A (en) * | 1990-06-04 | 1991-05-21 | Karl Adamaitis | Erosion resistant elbow conduit |
-
1992
- 1992-04-02 DE DE9204544U patent/DE9204544U1/en not_active Expired - Lifetime
-
1993
- 1993-03-15 WO PCT/AT1993/000046 patent/WO1993019695A1/en active IP Right Grant
- 1993-03-15 JP JP5516886A patent/JPH06508292A/en active Pending
- 1993-03-15 CA CA002110501A patent/CA2110501A1/en not_active Abandoned
- 1993-03-15 DE DE59308718T patent/DE59308718D1/en not_active Expired - Fee Related
- 1993-03-15 AU AU36208/93A patent/AU3620893A/en not_active Abandoned
- 1993-03-15 EP EP93905078A patent/EP0587833B1/en not_active Expired - Lifetime
- 1993-03-15 AT AT93905078T patent/ATE167796T1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EP0587833A1 (en) | 1994-03-23 |
| EP0587833B1 (en) | 1998-07-01 |
| DE59308718D1 (en) | 1998-08-06 |
| ATE167796T1 (en) | 1998-07-15 |
| AU3620893A (en) | 1993-11-08 |
| WO1993019695A1 (en) | 1993-10-14 |
| DE9204544U1 (en) | 1992-05-27 |
| JPH06508292A (en) | 1994-09-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |