CA1197119A - Connecting piece with sealing ring - Google Patents
Connecting piece with sealing ringInfo
- Publication number
- CA1197119A CA1197119A CA000396998A CA396998A CA1197119A CA 1197119 A CA1197119 A CA 1197119A CA 000396998 A CA000396998 A CA 000396998A CA 396998 A CA396998 A CA 396998A CA 1197119 A CA1197119 A CA 1197119A
- Authority
- CA
- Canada
- Prior art keywords
- groove
- sealing ring
- bearing face
- cross
- section
- 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
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
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
- F16L23/22—Flanged joints characterised by the sealing means the sealing means being rings made exclusively of a material other than metal
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/062—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces characterised by the geometry of the seat
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Gasket Seals (AREA)
- Connector Housings Or Holding Contact Members (AREA)
- Pens And Brushes (AREA)
- Seal Device For Vehicle (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A flange-type or screw-type connecting piece having a bearing face, an annular groove, made in the bearing face, and a resiliently yielding sealing ring dis-posed in the groove, and about 20-35% of the total volume of the sealing ring protruding beyond the bearing face, the groove having in cross-section either an arcuate or a flat bottom, the diameter or the width and depth of the groove being such that the major part of the sealing ring in its relaxed state corresponds with the form of the groove and is tightly enclosed by the wall or the walls of the groove, wherein both the wall portions of the groove directly adjoin-ing the bearing face seen in cross-section, are running parallel to one another and spaced from the sealing ring, so that two free spaces are formed between the wall portions adjoining the bearing face and the sealing ring.
A flange-type or screw-type connecting piece having a bearing face, an annular groove, made in the bearing face, and a resiliently yielding sealing ring dis-posed in the groove, and about 20-35% of the total volume of the sealing ring protruding beyond the bearing face, the groove having in cross-section either an arcuate or a flat bottom, the diameter or the width and depth of the groove being such that the major part of the sealing ring in its relaxed state corresponds with the form of the groove and is tightly enclosed by the wall or the walls of the groove, wherein both the wall portions of the groove directly adjoin-ing the bearing face seen in cross-section, are running parallel to one another and spaced from the sealing ring, so that two free spaces are formed between the wall portions adjoining the bearing face and the sealing ring.
Description
7~
CONNECTING PIlECE WITH SEALING RING
This invention relates to connecting means, and more particularly to a flange- or screw-type connecting piece of the kind havin~ a bearing face including an annular groove with a bottom which is either of arcuate cross-section or flat, and a resiliently yielding sea-ling rin~ disposed in the groove in such a way that .
about 20-35~ of the volume of the rin~ protrudes beyond the bearing face.
A connecting piece of this kind is joined to another connecting piece in order to obtain the fluid-tight interconnection of apparatus, container~, or other equipment either directly or by means of conduits, or the sealing of apparatlls, containers, or other equip-ment or conduits, whereby media of all ]kinds are pre-vented from penetratin~ in or out.
The insertion of resiliently yield.ing sealing ringsbetween two connecting pieces i~ known. Previously g proposed designs of such connections have various draw-backs which may be classified in three groups.
In the first group, the resiliently yieldin~ seal-ing rings are pressed into too small a space in the annular grooves. The sealing material is thereby sub~
jected to excessive stress and ultimately destroyed.
Once the two connectinq pieces have been taken apart, the sealing ring cannot be re-used. Designs of this kind are disclosed in Swiss Patents Nos. 461,593 and 538,205; German Patents Nos. 1,640,968, 2,047,027 and
CONNECTING PIlECE WITH SEALING RING
This invention relates to connecting means, and more particularly to a flange- or screw-type connecting piece of the kind havin~ a bearing face including an annular groove with a bottom which is either of arcuate cross-section or flat, and a resiliently yielding sea-ling rin~ disposed in the groove in such a way that .
about 20-35~ of the volume of the rin~ protrudes beyond the bearing face.
A connecting piece of this kind is joined to another connecting piece in order to obtain the fluid-tight interconnection of apparatus, container~, or other equipment either directly or by means of conduits, or the sealing of apparatlls, containers, or other equip-ment or conduits, whereby media of all ]kinds are pre-vented from penetratin~ in or out.
The insertion of resiliently yield.ing sealing ringsbetween two connecting pieces i~ known. Previously g proposed designs of such connections have various draw-backs which may be classified in three groups.
In the first group, the resiliently yieldin~ seal-ing rings are pressed into too small a space in the annular grooves. The sealing material is thereby sub~
jected to excessive stress and ultimately destroyed.
Once the two connectinq pieces have been taken apart, the sealing ring cannot be re-used. Designs of this kind are disclosed in Swiss Patents Nos. 461,593 and 538,205; German Patents Nos. 1,640,968, 2,047,027 and
2,132,951; Austrian Patent No. 320,782, and V.S. Patents Nos. 1,368,196 and 3,719,202.
In the second group, the resiliently yielding seal-ing rinqs are accommodated in too large a space in the annular grooves with a view to avoiding the draw-backs of the first group. In this case, however, only the cross section of the sealing ring is subjected to deformation. The effort of the sealing material to retain its original, undeformed shape insofar as - 20 possible is frequently insufficient to prevent media of all kinds from penetrating in or out. If, in such cases~ the cross-sectional shape of the sealin~ ring is deformed even slightly beyond the permissible extent, the sealing effect is initially found to be satisfac-tory, but later on premature aginq of the sealin~
ma~erial occurs, whereby its molecular structure is destroyed. The filamentary molecules of the sealing material become torn or the cross-linking points of the filamentary molecules are ripped apart. The force which strives to restore the undeformed cross-sectional shape is thereby weakened, and the sealing effect is thus jeopardized or even eliminated~ Designs of this kind are disclosed in Swiss Patent No. 428,881, German ~tility Model No. 72 30680, and in U.S. Patents Nos.
In the second group, the resiliently yielding seal-ing rinqs are accommodated in too large a space in the annular grooves with a view to avoiding the draw-backs of the first group. In this case, however, only the cross section of the sealing ring is subjected to deformation. The effort of the sealing material to retain its original, undeformed shape insofar as - 20 possible is frequently insufficient to prevent media of all kinds from penetrating in or out. If, in such cases~ the cross-sectional shape of the sealin~ ring is deformed even slightly beyond the permissible extent, the sealing effect is initially found to be satisfac-tory, but later on premature aginq of the sealin~
ma~erial occurs, whereby its molecular structure is destroyed. The filamentary molecules of the sealing material become torn or the cross-linking points of the filamentary molecules are ripped apart. The force which strives to restore the undeformed cross-sectional shape is thereby weakened, and the sealing effect is thus jeopardized or even eliminated~ Designs of this kind are disclosed in Swiss Patent No. 428,881, German ~tility Model No. 72 30680, and in U.S. Patents Nos.
3,499,670 and 4,090,02a.
The third group comprises annular grooves in whicn the space is unfavorably shaped for accommodating seal-ing rings. The pounding and kneading motions which occur during installation and deformation produce damage simi-lar to that of the first and second groups, in additionto which the sealing rin~s are often further damaged and destroyed by sharp edges and corners. Examples are found in the international standard ISO/DI~ 6149 an~ in German Patent No. 16 40 968.
Some previously proposed designs are even to be con-sidered as combinations of these groups~
In the periodical Machine Design of 9 March 1967, O-ring grooves having flat or rounded bottoms are des~
cribed. The O-ring inserted in a round-bottom groove tightly enclosed by the wall of the groove because the round-bottom groove has the same diameter as the actual cross-section of the O-ring. The O-ring protrudQs 1/64 to 1/32 in. above the fa~e of the flange~ The groove for receiving the O-ring is not U-shaped in cross section because it tightly encloses the O-ring except for its protruding portion. Hence there is no clearance bet-ween the O-ring and the sections of the groove-walls ending at ~he bearing ~ace of the flange. When pressure is applied to the O~ring inserted in the groove, the ring can be damaged by the edges of th~ groove~
In the periodical Product Engineering of 31 January 1966, a flange having a flat-bottom groove is described~
The optimum protrusion o~ the sealing ring above the face of the flange is about 20% of the total volume of the ring. Here, too, the sidewalls of the groove do not run parallel toward the bearing face when viewed in cross-section~ In this instance less than half of the ring rather than the greatest part of it, is tightly enclosed by the walls of 1:he groove. When pressure is applied to the sealing ring, it is deformed only in cross-section b~ the forces acting UpOIl it.
~g7~9 In both of the foregoing cases, the deformation of the sealing ring leads to its accelerated aging.
It is an object of this invention to provide a connecting piece of the kind initially defined in which the annular groove is designed in such a way that the deforming forces acting upon the sealing ring tencl rather to compact its molecular structure than simply to deform its cross-section.
A further object of this invention is to provide such a connecting piece in which the degree o compact-ion of the sealing ring disposed in the annular groove can be preselected by means of the shape given to the groove.
To this end, in the connecting piece according to the present invention, the diameter or width and the depth of the groove are so dimensioned that the seal-ing ring in its relaxed state is for the most part tightly enclosed by the wall or walls of the groove and that the two wall-sections of the groove ending at the bearing face of the connecting piece are pa-rallel to one another and space from the sealing ring.
Preferred embodiments of the invention will now be described in detail with reference to the accom-i panying clrawinqs~ in which:
Figure 1 is a cross--section through a flange--type connecting piece having an annular groove machined in the bearing face thereof and an O-ring i~ undeformed state inserted in the groove, Figure 2 is a cross--section through a flange--type connecting piece having an annular groove made in the bearinq face thereof and a sealing ring of polygonal cross-section in undeformed state inserted in the groove and Figure 3 is a cross-section through a screw-type connecting piece havinq an annular groove in the bearing face thereof and an O-rinq in underformed state inserted in the groove.
The connecting piece 1 shown in Figure 1 includes a bearing face 2 into which a continuous annular groove 3 of substantially U-shaped cross-section has S been machined. The bottom 6 of groove 3 is arcuater the two parallel flanks merging tangentially without transition into bottom 6. The radius of arcuate groove bottom 6 is exactly the same as that of an O-ring 4 inserted in groove 3. The diameter or width of groove 3 is such that O-ring 4, in its relaxed state, is for the most part tightly enclosed by the wall 5 of groove 3. ~he segment of O-rin~ 4 protruding from groove 3 beyond face 2 represents about 25-30% of the total volume of O-ring 4. Two clearance spaces are formed between O-ring 4 and the respective flanks of groove 3 adjoining face 2.
By tightening a screw 7 in a threaded bore 8a of a second connecting piece 8 to be joined to the first connecting piece 1 piec~s 1 an 8 are caused - 20 to approach one another, whereupon the protruding segment of O-ring 4 is partially deformed, a small portion of this segment being forced into the two clearance spaces. As screw 7 is further tightened until pieces 1 and 8 bear snugly against one another t the molecular structure of the material of which O-ring 4 is made becomes compacted. This step prevents any displacement of the sealing material in an undesired direction in which it would be destroyed~
W~en the molecular structure of the sealing mate rial is thus compacted, better and more reliable seal-ing effects are achieved than when the cross~sectional shape of the sealing material is deformed. Since the filamentary molecules have shorter distances to cover when being crowded together~ there is but a very slight risk of cross-linking points being parted or of the rilamentary molecu]es themselves being torn;
~9 ~
it is thus apparent that the sealing effect will not be jeopardized by premature aging of the sealing ma-terial.
When screw 7 is beinq tightened, a perceivable resistance is encountered as soon as the faces of connecting pieces 1 and 8 are fast against one another, so that proper assembly is ensured. The snug fit be-tween pieces 1 and 8 makes it impossible for the seal-ing material to be compressed beyond the preselected degree of compaction.
The embodiment illustrated in Figure 2 has the same function and the same effect as that of Figure 1.
This embodiment differs only in that the cross -section of an annular groove 3a is polygonal to con-orm to that of a sealing ring 4a inserted therein.The groove bottom 6a is flat, corresponding to the shape of sealing ring 4a. Here, too, ring 4a of poly-gonal cross-section is for the most part tightly enclosed by groove walls 5a. The sides of ring 4a running toward bearing face 2 are inclined toward one another so that two clearance spaces are created in this region between sealing ring 4a and the re-spective groove walls 5a. The portion of ring 4a protruding beyond face 2 may represent 20-35% of the total volume of ring 4a.
The depth of annular groove 3 or 3a is to be so chosen that the portion of ring 4 or 4a protruding beyond bearing face 2 corresponds to the optimum degree of compaction of the sealing material being used. For sealiny rinqs of ordinary quality as are customari:Ly available in commerce, the volume of the portion protruding beyond face 2 will constitute about 25-33% of the total volume of the sealing ring;
thus, a faultless, reliab e, and fluid tight connection is obtained.
Instead of insertinq a conventional sealinq ring 7~1~
, ~
in the annular groove, a sealing ring of plasticized sealing materials can be injected into the annular qroove by means of an injection tool designed for this purpose.
The steps described above are also applicable in the case of screw-type connecting pieces~
The sealing ring disposed in the above-described annular groove guarantees reliable sealing of the connection aqainst media of all kinds penetratinq in our out. The sealing ring is fixed in the groove designPd in this way and is not subjected to any change of position during storager assembly, and disassembly. Any shifting of part of the sealing ring is also made impossible, so that no damage or premature aging occurs. Because the forces of deformation are necessarily directed largely to the molecular compaction of the material r the connected parts can, in case of need, be disassem-bled and re-assembled without having to replace the sealing rin~. The compaction of the sealing ring can be controlled by means of the preselected depth and shape of the annular groove. Through the choice of the materials in injection molding processes, greater demands may be made on the sealing effect be~ause harder sealing materials are available than in the case of loose sealing rings, which are also extensible.
The third group comprises annular grooves in whicn the space is unfavorably shaped for accommodating seal-ing rings. The pounding and kneading motions which occur during installation and deformation produce damage simi-lar to that of the first and second groups, in additionto which the sealing rin~s are often further damaged and destroyed by sharp edges and corners. Examples are found in the international standard ISO/DI~ 6149 an~ in German Patent No. 16 40 968.
Some previously proposed designs are even to be con-sidered as combinations of these groups~
In the periodical Machine Design of 9 March 1967, O-ring grooves having flat or rounded bottoms are des~
cribed. The O-ring inserted in a round-bottom groove tightly enclosed by the wall of the groove because the round-bottom groove has the same diameter as the actual cross-section of the O-ring. The O-ring protrudQs 1/64 to 1/32 in. above the fa~e of the flange~ The groove for receiving the O-ring is not U-shaped in cross section because it tightly encloses the O-ring except for its protruding portion. Hence there is no clearance bet-ween the O-ring and the sections of the groove-walls ending at ~he bearing ~ace of the flange. When pressure is applied to the O~ring inserted in the groove, the ring can be damaged by the edges of th~ groove~
In the periodical Product Engineering of 31 January 1966, a flange having a flat-bottom groove is described~
The optimum protrusion o~ the sealing ring above the face of the flange is about 20% of the total volume of the ring. Here, too, the sidewalls of the groove do not run parallel toward the bearing face when viewed in cross-section~ In this instance less than half of the ring rather than the greatest part of it, is tightly enclosed by the walls of 1:he groove. When pressure is applied to the sealing ring, it is deformed only in cross-section b~ the forces acting UpOIl it.
~g7~9 In both of the foregoing cases, the deformation of the sealing ring leads to its accelerated aging.
It is an object of this invention to provide a connecting piece of the kind initially defined in which the annular groove is designed in such a way that the deforming forces acting upon the sealing ring tencl rather to compact its molecular structure than simply to deform its cross-section.
A further object of this invention is to provide such a connecting piece in which the degree o compact-ion of the sealing ring disposed in the annular groove can be preselected by means of the shape given to the groove.
To this end, in the connecting piece according to the present invention, the diameter or width and the depth of the groove are so dimensioned that the seal-ing ring in its relaxed state is for the most part tightly enclosed by the wall or walls of the groove and that the two wall-sections of the groove ending at the bearing face of the connecting piece are pa-rallel to one another and space from the sealing ring.
Preferred embodiments of the invention will now be described in detail with reference to the accom-i panying clrawinqs~ in which:
Figure 1 is a cross--section through a flange--type connecting piece having an annular groove machined in the bearing face thereof and an O-ring i~ undeformed state inserted in the groove, Figure 2 is a cross--section through a flange--type connecting piece having an annular groove made in the bearinq face thereof and a sealing ring of polygonal cross-section in undeformed state inserted in the groove and Figure 3 is a cross-section through a screw-type connecting piece havinq an annular groove in the bearing face thereof and an O-rinq in underformed state inserted in the groove.
The connecting piece 1 shown in Figure 1 includes a bearing face 2 into which a continuous annular groove 3 of substantially U-shaped cross-section has S been machined. The bottom 6 of groove 3 is arcuater the two parallel flanks merging tangentially without transition into bottom 6. The radius of arcuate groove bottom 6 is exactly the same as that of an O-ring 4 inserted in groove 3. The diameter or width of groove 3 is such that O-ring 4, in its relaxed state, is for the most part tightly enclosed by the wall 5 of groove 3. ~he segment of O-rin~ 4 protruding from groove 3 beyond face 2 represents about 25-30% of the total volume of O-ring 4. Two clearance spaces are formed between O-ring 4 and the respective flanks of groove 3 adjoining face 2.
By tightening a screw 7 in a threaded bore 8a of a second connecting piece 8 to be joined to the first connecting piece 1 piec~s 1 an 8 are caused - 20 to approach one another, whereupon the protruding segment of O-ring 4 is partially deformed, a small portion of this segment being forced into the two clearance spaces. As screw 7 is further tightened until pieces 1 and 8 bear snugly against one another t the molecular structure of the material of which O-ring 4 is made becomes compacted. This step prevents any displacement of the sealing material in an undesired direction in which it would be destroyed~
W~en the molecular structure of the sealing mate rial is thus compacted, better and more reliable seal-ing effects are achieved than when the cross~sectional shape of the sealing material is deformed. Since the filamentary molecules have shorter distances to cover when being crowded together~ there is but a very slight risk of cross-linking points being parted or of the rilamentary molecu]es themselves being torn;
~9 ~
it is thus apparent that the sealing effect will not be jeopardized by premature aging of the sealing ma-terial.
When screw 7 is beinq tightened, a perceivable resistance is encountered as soon as the faces of connecting pieces 1 and 8 are fast against one another, so that proper assembly is ensured. The snug fit be-tween pieces 1 and 8 makes it impossible for the seal-ing material to be compressed beyond the preselected degree of compaction.
The embodiment illustrated in Figure 2 has the same function and the same effect as that of Figure 1.
This embodiment differs only in that the cross -section of an annular groove 3a is polygonal to con-orm to that of a sealing ring 4a inserted therein.The groove bottom 6a is flat, corresponding to the shape of sealing ring 4a. Here, too, ring 4a of poly-gonal cross-section is for the most part tightly enclosed by groove walls 5a. The sides of ring 4a running toward bearing face 2 are inclined toward one another so that two clearance spaces are created in this region between sealing ring 4a and the re-spective groove walls 5a. The portion of ring 4a protruding beyond face 2 may represent 20-35% of the total volume of ring 4a.
The depth of annular groove 3 or 3a is to be so chosen that the portion of ring 4 or 4a protruding beyond bearing face 2 corresponds to the optimum degree of compaction of the sealing material being used. For sealiny rinqs of ordinary quality as are customari:Ly available in commerce, the volume of the portion protruding beyond face 2 will constitute about 25-33% of the total volume of the sealing ring;
thus, a faultless, reliab e, and fluid tight connection is obtained.
Instead of insertinq a conventional sealinq ring 7~1~
, ~
in the annular groove, a sealing ring of plasticized sealing materials can be injected into the annular qroove by means of an injection tool designed for this purpose.
The steps described above are also applicable in the case of screw-type connecting pieces~
The sealing ring disposed in the above-described annular groove guarantees reliable sealing of the connection aqainst media of all kinds penetratinq in our out. The sealing ring is fixed in the groove designPd in this way and is not subjected to any change of position during storager assembly, and disassembly. Any shifting of part of the sealing ring is also made impossible, so that no damage or premature aging occurs. Because the forces of deformation are necessarily directed largely to the molecular compaction of the material r the connected parts can, in case of need, be disassem-bled and re-assembled without having to replace the sealing rin~. The compaction of the sealing ring can be controlled by means of the preselected depth and shape of the annular groove. Through the choice of the materials in injection molding processes, greater demands may be made on the sealing effect be~ause harder sealing materials are available than in the case of loose sealing rings, which are also extensible.
Claims
1. A flange-type or screw-type metal connecting piece assembly, comprising first and second connecting pieces extending in mutually parallel planes, a screw to tightly connect both the connecting pieces to fit snugly against one another, said first connecting piece having a bearing face, and a resiliently yielding sealing ring made of homogeneous material of a solid cross-section disposed in the groove, and about 20-35%
of the total volume of said sealing ring in its relaxed state protruding beyond said bearing face, said groove having in cross-section either an arcuate or a flat bottom, the diameter or the width and depth of said groove being such that the major part of said sealing ring in its relaxed state corresponds with the form of the groove and is tightly enclosed by the wall or the walls of the groove, wherein both the wall portions of the groove directly adjoining the bearing face seen in cross-section, are running parallel to one another and spaced from the sealing ring, so that two free spaces are formed between the wall portions adjoining said bearing face and said sealing ring, and said sealing ring in its compressed state filling completely said two free spaces.
of the total volume of said sealing ring in its relaxed state protruding beyond said bearing face, said groove having in cross-section either an arcuate or a flat bottom, the diameter or the width and depth of said groove being such that the major part of said sealing ring in its relaxed state corresponds with the form of the groove and is tightly enclosed by the wall or the walls of the groove, wherein both the wall portions of the groove directly adjoining the bearing face seen in cross-section, are running parallel to one another and spaced from the sealing ring, so that two free spaces are formed between the wall portions adjoining said bearing face and said sealing ring, and said sealing ring in its compressed state filling completely said two free spaces.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH81810062.0 | 1981-02-25 | ||
| EP81810062A EP0058811B1 (en) | 1981-02-25 | 1981-02-25 | Connector with a seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1197119A true CA1197119A (en) | 1985-11-26 |
Family
ID=8188647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000396998A Expired CA1197119A (en) | 1981-02-25 | 1982-02-24 | Connecting piece with sealing ring |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0058811B1 (en) |
| JP (1) | JPS57173663A (en) |
| AT (1) | ATE9032T1 (en) |
| CA (1) | CA1197119A (en) |
| DE (1) | DE3165482D1 (en) |
| DK (1) | DK149513C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59170564A (en) * | 1983-03-16 | 1984-09-26 | Toyoda Gosei Co Ltd | Seal member |
| SE436150B (en) * | 1983-04-05 | 1984-11-12 | Alfa Laval Ab | CENTRIFUGAL SEALER SEALING RING |
| FR2601108B1 (en) * | 1986-07-01 | 1988-09-02 | Cefilac | SEALING DEVICE FOR PARALLEL PLANED FACE ASSEMBLY AND CORRESPONDING SEALS |
| US9293169B2 (en) | 2004-05-04 | 2016-03-22 | Seagate Technology Llc | Seal-type label to contain pressurized gas environment |
| WO2008104091A1 (en) * | 2007-03-01 | 2008-09-04 | Drm, Dr. Müller Ag | Flange seal for pressure tank filters |
| JP5125651B2 (en) * | 2008-03-21 | 2013-01-23 | 大日本印刷株式会社 | Seal structure of chamber apparatus and chamber apparatus using the same |
| JP7012447B2 (en) * | 2017-03-28 | 2022-01-28 | 平田機工株式会社 | Manufacturing method of mounted products and their manufacturing equipment |
| CN108361379A (en) * | 2017-12-29 | 2018-08-03 | 中国船舶工业集团公司第七0八研究所 | A kind of non-round flange face cone type fluid seals technology of large size |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2717793A (en) * | 1952-11-10 | 1955-09-13 | Mathewson Corp | Fluid seal and apparatus for manufacture thereof |
| SE409895B (en) * | 1976-12-20 | 1979-09-10 | Karlstad Mekaniska Ab | DEVICE FOR O-RING SEALS |
| CH640617A5 (en) * | 1979-07-06 | 1984-01-13 | Baumgartner Merzia | CONNECTING ELEMENT FOR SCREWING INTO A LINE OR INTO A APPARATUS FOR CONNECTION TO THE LINE SYSTEM OF THE PRESSURE MEDIUM CIRCUIT. |
-
1981
- 1981-02-25 EP EP81810062A patent/EP0058811B1/en not_active Expired
- 1981-02-25 DE DE8181810062T patent/DE3165482D1/en not_active Expired
- 1981-02-25 AT AT81810062T patent/ATE9032T1/en not_active IP Right Cessation
-
1982
- 1982-02-24 CA CA000396998A patent/CA1197119A/en not_active Expired
- 1982-02-24 DK DK79582A patent/DK149513C/en not_active IP Right Cessation
- 1982-02-25 JP JP57028219A patent/JPS57173663A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DK149513B (en) | 1986-07-07 |
| DK149513C (en) | 1986-12-15 |
| JPS57173663A (en) | 1982-10-26 |
| ATE9032T1 (en) | 1984-09-15 |
| DK79582A (en) | 1982-08-26 |
| EP0058811B1 (en) | 1984-08-15 |
| EP0058811A1 (en) | 1982-09-01 |
| DE3165482D1 (en) | 1984-09-20 |
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| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |