WO1986004658A1 - Hard material seal members having a low friction coefficient - Google Patents
Hard material seal members having a low friction coefficient Download PDFInfo
- Publication number
- WO1986004658A1 WO1986004658A1 PCT/EP1986/000063 EP8600063W WO8604658A1 WO 1986004658 A1 WO1986004658 A1 WO 1986004658A1 EP 8600063 W EP8600063 W EP 8600063W WO 8604658 A1 WO8604658 A1 WO 8604658A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hard material
- seal members
- pair
- members
- coated
- Prior art date
Links
- 239000000463 material Substances 0.000 title claims abstract description 69
- 229910052751 metal Inorganic materials 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims abstract description 7
- 238000005234 chemical deposition Methods 0.000 claims abstract description 6
- 238000005289 physical deposition Methods 0.000 claims abstract description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 4
- 150000002739 metals Chemical class 0.000 claims abstract description 4
- 150000004767 nitrides Chemical class 0.000 claims abstract description 3
- 229920002994 synthetic fiber Polymers 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 238000000151 deposition Methods 0.000 claims description 7
- 230000008021 deposition Effects 0.000 claims description 7
- 238000003754 machining Methods 0.000 claims description 6
- 230000004048 modification Effects 0.000 claims description 5
- 238000012986 modification Methods 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 150000002500 ions Chemical class 0.000 claims description 3
- 238000005468 ion implantation Methods 0.000 claims description 2
- 238000013532 laser treatment Methods 0.000 claims description 2
- 150000001247 metal acetylides Chemical class 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 150000002826 nitrites Chemical class 0.000 claims description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims 1
- 241001080024 Telles Species 0.000 claims 1
- 239000000919 ceramic Substances 0.000 claims 1
- 229910052804 chromium Inorganic materials 0.000 claims 1
- 239000011651 chromium Substances 0.000 claims 1
- 238000005268 plasma chemical vapour deposition Methods 0.000 claims 1
- 229910052710 silicon Inorganic materials 0.000 claims 1
- 239000010703 silicon Substances 0.000 claims 1
- XOUPWBJVJFQSLK-UHFFFAOYSA-J titanium(4+);tetranitrite Chemical compound [Ti+4].[O-]N=O.[O-]N=O.[O-]N=O.[O-]N=O XOUPWBJVJFQSLK-UHFFFAOYSA-J 0.000 claims 1
- 230000007704 transition Effects 0.000 claims 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 abstract description 10
- 229910010271 silicon carbide Inorganic materials 0.000 abstract description 8
- 238000005461 lubrication Methods 0.000 abstract description 3
- 229910010293 ceramic material Inorganic materials 0.000 abstract description 2
- 238000004321 preservation Methods 0.000 abstract 1
- 235000019589 hardness Nutrition 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000314 lubricant Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000009467 reduction Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- CTAJOZXGMUEADN-UHFFFAOYSA-K chromium(3+);trinitrite Chemical compound [Cr+3].[O-]N=O.[O-]N=O.[O-]N=O CTAJOZXGMUEADN-UHFFFAOYSA-K 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000000135 prohibitive effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5053—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials non-oxide ceramics
-
- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K25/00—Details relating to contact between valve members and seats
- F16K25/005—Particular materials for seats or closure elements
Definitions
- This invention relates to hard material seal members of the type in which the sealing effect is due to precise finish of the sealing mem ⁇ bers, which are movable in mutual direct contact without interposition of any gasket made of a yielding material.
- Examples of pairs of seal members of this kind are found in hard material plaques for faucets, in industrial valves, in injection pumps for diesel engines and so on.
- the hard material plaques used as flow interception and regulation members in faucets for hydraulic appliances are conventionally made of aluminium oxides or silicates, sintered and then ground to a roughness of about 0.2 to 0.4 microns. Because of these very accurately finished surfaces, said plaques form members capable of effectively intercepting and regulating a flow of water, and due to their hardness, which ranges in the order of 23,000 N/mm, they have a long life and are capable of pushing out hard foreign bodies, such as sand grains which arrive to contact them, without suffering any damage.
- these plaques have a tendency to adhere to one another which, in the case of lack of lubricants, provides a high sliding friction, even higher that that due to the friction coefficient of such materials, which is per se relatively high, approaching 0.12.
- the plaques are provided on their cooperating surfaces with a thin layer of silicone lubricant, which reduces the sliding friction to acceptable values.
- the silicone lubricant is gradually pushed out, and the friction increases to unacceptable levels. In extreme cases, the faucet may become locked.
- this material has a reduced tendency to provide adhesion between machined surfaces having a smooth finish, so that it initially allows to effectively reduce, within certain limits, the friction between the cooperating plaques of a fau- cet.
- the friction bet ⁇ ween two plaques both made of silicon carbide greatly increases, until in this case too it reaches unacceptable levels.
- the object of this invention is to provide hard material seal members having a Limited cost of production and machining and capable of providing a sufficiently reduced friction coefficient, even in the absence of Lubrication, so as to allow a proper , operation of the apparatuses for a long period of time without requiring any intervention.
- a pair of hard material seal members in which both said members are made of at least moderately hard materials capable of receiving a precise machin ⁇ ing, at least one of said members is coated with a thin layer of a high ⁇ ly hard material obtained by physical or chemical deposition from a gas ⁇ eous medium, and said two members have cooperating surfaces of different nature or finish.
- the highly hard materials which may be deposited for the pur ⁇ pose of the invention there are particularly the silicon carbide, the carbides and nitrides of metals, especially of the transition metals, metal nitrites, particularly ti-tanium nitrite and chromium nitrite, and the cubic crystallographic lattice carbon.
- Various processes of physical or chemical deposition from a gaseous medium are known, which may be used for forming the coating of a highly hard material -as mentioned above.
- At least one of the seal members is made of an at least mo ⁇ derately hard material coated with a material of high hardness by means of one of the just mentioned processes.
- both seal members When applying the invention, it is necessary for both seal members to be made of an at least moderately hard material, to be able to recei- ve a precise machining, since only a high degree of finish, such as that given by a precise grinding or lapping, enables the seal members to effectively perform the sealing action, either in a faucet or in any other device.
- those of the present invention do not require their bodies to also have the wear resistance and the degree of hardness which are usually required.
- the seal members according to the invention may also be made of a material which, though being hard and resistant enough to receive an appropriate finish and to maintain in the long run its shape, does not have per se ac ⁇ ceptable qualities to form a seal member.
- these materials are in ⁇ cluded for example steatite, ceramic materials of modest quality, metals and some synthetic materials ' having high hardness, stiffness and stability.
- tuflite a material obtained by baking a mixture of a plastic powder and a hard material powder (socalled tuflite) can be used.
- a seal member cooperating with a member coated with a highly hard material and having a high finish does not suffer any damage due to its limited hardness, and a considerable difference in hardness between the two cooperating surfaces turns out to be of ad ⁇ vantage to reduce the friction coefficient in the absence of lubricat ⁇ ion. For this reason one of the seal members may lack any coating of highly hard material.
- both seal members may be coated with materials of high hardness, but in this case the two cooperating surfaces must have sufficiently different characteristics, which may be obtained either by providing a coating with two different materials, or by applying the coating materials onto surfaces having different degrees of finish, or even by combining these two characteristics with one another.
- An important advantage which may be suitably exploited in the use, according to this invention, of the h ⁇ ghly hard material layers obtained by physical or chemical deposition from a gaseous medium, is that these layers do not substantially modify the degree of finish of the surfaces on which the deposition is carried out.
- the plaque intended to receive the deposition of a material of high hardness may be machined to a high degree of finish, for example by lapping, prior to carrying out the deposition, thus allowing working on a material which is suffi ⁇ ciently hard for receiving the desired finishing operation, but on the other hand is not so hard as to render difficult and expensive this op- eration or to require special equipments and technologies.
- This enables obtaining an important reduction in the manufacturing costs and allows the machining to be carried out by means of conventional machinery, by any manufacturer having no special equipments such as those required, for example, for lapping a seal member made of silicon carbide.
- pairs of cooperating seal members one of which, owing to its coating, has a hardness considerably higher than that of the other seal member, and has a high surface finish
- alLows to employ for the other seal member a material of lower hardness, not coated, and hav ⁇ ing a rougher surface including a high number of microscopic recesses which substantially reduce the bearing surface between the cooperating seal members. Due to this peculiarity a further reduction of the dry sliding friction between the seal members takes place, and further important economies in the manufacturing costs are obtained, inasmuch as the machining of the not coated member is not only less expensive per se, but it may also be limited to a rougher degree of finish.
- an advantage of the seal members coated by means of a deposition of silicon carbide is the high chemical stability of this compound.
- silicon carbide is not subject to corrosions or al ⁇ terations in any kind of water, and it provides an exceptional resistan ⁇ ce to oxidation.
- a similar behaviour is also given by other materials among those of high hardness which may be deposited from a gaseous me- dium, and especially by carbon having a cubic chrystallographic lattice. This material, which could in no way be used to form the body of a seal member, is very advantageous also for its reduced friction coefficient, which approaches the value of 0.02.
- the invention may be used independently of the shape and number of the seal members employed in an apparatus; such seal members may be flat or they can form bodies whose working surfaces are convex or concave, for example as those of a sphere or a cylinder.
- the application of this invention allows to ensure the smoothness in the control of the apparatuses which embody such seal members, in- dependently from the presence of a lubricant, for periods of time which are much longer than those obtained hitherto, and this without practi ⁇ cally increasing the cost of the seal members.
- the anyway limited cost of the process of deposition from a gaseous medium is at least approximately counterbalanced by the lower cost of the materials forming the seal members and by a lower cost of the working.
- This invention finds a particularly interesting utilization in val ⁇ ves and faucets, both in those of the more largely used type, having two substantially disc-shaped plaques, and in those having three substanti- ally disc-shaped plaques, or a single disc-shaped plaque cooperating with sleeve-shaped plaques placed at the inlets. Also the invention can be used both in those valves in which the plaques are crossed in only one direction by the water, which then enters the body of the valve or of a cartridge, and in those valves in which the water flows through the plaques firstly in a direction and then in the opposite direction.
- valves and faucets are not exclusive and, as already pointed out above, other possibilites of application of the pairs of seal members according to the invention are for example the industrial valves, particulary those subject to high temperatures and/or to the action of chemical products, the valves and pistons for injection pumps of diesel engines, and so on.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Sliding Valves (AREA)
- Multiple-Way Valves (AREA)
- Chemical Vapour Deposition (AREA)
- Physical Vapour Deposition (AREA)
- Gasket Seals (AREA)
- Sealing Material Composition (AREA)
- Sealing Devices (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Mechanical Sealing (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61501283A JPH0689854B2 (en) | 1985-02-12 | 1986-02-04 | Hard material seal member with low coefficient of friction |
DE8686901374T DE3673592D1 (en) | 1985-02-12 | 1986-02-04 | METHOD FOR PRODUCING SEALING DISKS WITH A LOW FRICTION COEFFICIENT. |
FI863829A FI82538C (en) | 1985-02-12 | 1986-09-22 | TILLSLUTARORGAN AV HAORT MATERIAL MED LAOG FRIKTIONSKOEFFICIENT. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT67138-A/85 | 1985-02-12 | ||
IT67138/85A IT1182433B (en) | 1985-02-12 | 1985-02-12 | HARD SEALING BODIES HAVING LOW FRICTION COEFFICIENT |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1986004658A1 true WO1986004658A1 (en) | 1986-08-14 |
Family
ID=11299899
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1986/000063 WO1986004658A1 (en) | 1985-02-12 | 1986-02-04 | Hard material seal members having a low friction coefficient |
PCT/US1986/000278 WO1986004548A1 (en) | 1985-02-12 | 1986-02-07 | Process of manufacturing seal members having a low friction coefficient |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1986/000278 WO1986004548A1 (en) | 1985-02-12 | 1986-02-07 | Process of manufacturing seal members having a low friction coefficient |
Country Status (12)
Country | Link |
---|---|
US (1) | US4966789A (en) |
EP (2) | EP0216810B1 (en) |
JP (1) | JPH0689854B2 (en) |
AU (1) | AU588578B2 (en) |
CH (1) | CH662630A5 (en) |
DE (2) | DE3673592D1 (en) |
DK (1) | DK168715B1 (en) |
ES (1) | ES8705958A1 (en) |
FI (1) | FI82538C (en) |
GB (1) | GB2187537B (en) |
IT (1) | IT1182433B (en) |
WO (2) | WO1986004658A1 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0291532A1 (en) * | 1986-12-03 | 1988-11-23 | Masco Corporation Of Indiana | Seal element of hard material sintered from a semi-finished form with organic binder |
EP0243428B1 (en) * | 1985-10-28 | 1989-09-20 | Battelle-Institut e.V. | Mutually sealing valve elements for mixing taps |
EP0339083A1 (en) * | 1987-11-10 | 1989-11-02 | Masco Corporation Of Indiana | A pair of seal members of hard material having a low friction coefficient |
DE3832692A1 (en) * | 1988-09-27 | 1990-03-29 | Leybold Ag | SEALING ELEMENT WITH A SHUT-OFF BODY MADE OF A METAL OR NON-METAL MATERIAL AND METHOD FOR APPLYING HARD MATERIAL LAYERS TO THE SHUT-OFF BODY |
FR2664015A1 (en) * | 1990-06-29 | 1992-01-03 | Tokyo Yogyo Kk | TAP SHUTTER ELEMENT. |
EP0597177A1 (en) * | 1992-09-17 | 1994-05-18 | P+S ARMATUREN GmbH | Gate valve for gas conduits |
FR2708700A1 (en) * | 1993-07-30 | 1995-02-10 | Framatome Sa | Grating-type shutter, for example for a steam turbine |
DE4434302A1 (en) * | 1993-10-01 | 1995-04-13 | Fuji Electric Co Ltd | Mechanical parts, and process for the production of a film thereon |
EP0733837A1 (en) * | 1995-03-21 | 1996-09-25 | Hoechst CeramTec AG | Disc assembly |
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DE3829506A1 (en) * | 1988-08-31 | 1990-03-08 | Berchem & Schaberg Gmbh | SHUT-OFF VALVE, IN PARTICULAR CONTROL REGULATION VALVE, FOR PIPES |
US5087483A (en) * | 1988-11-22 | 1992-02-11 | Masco Corporation | Carburizing ceramic plates for a faucet valve |
JPH07100787B2 (en) * | 1991-02-06 | 1995-11-01 | 島貿易株式会社 | Ceramic coated metal gasket and manufacturing method thereof |
FR2674244B1 (en) * | 1991-03-21 | 1993-05-28 | Commissariat Energie Atomique | PROCESS FOR THE PREPARATION OF CERAMIC BODIES FREE OF SELF-ADHESION UNDER CONSTRAINT OR DURING AGING. |
CA2074099A1 (en) * | 1991-07-22 | 1993-01-23 | Jerry Collins | Chemically vapor deposited saw guide |
DE4301632C2 (en) * | 1993-01-22 | 2001-08-02 | Audi Ag | Valve seat ring |
US5763072A (en) * | 1994-12-23 | 1998-06-09 | Maruwa Ceramic Co., Ltd. | Ceramic sliding member having pyrolytic carbon film and process of fabricating the same |
JP3217696B2 (en) * | 1996-04-26 | 2001-10-09 | 京セラ株式会社 | Disc valve |
US6893003B2 (en) | 2002-04-19 | 2005-05-17 | Newfrey Llc | Valves including thermally sprayed sealing components |
US8220489B2 (en) | 2002-12-18 | 2012-07-17 | Vapor Technologies Inc. | Faucet with wear-resistant valve component |
US7866342B2 (en) | 2002-12-18 | 2011-01-11 | Vapor Technologies, Inc. | Valve component for faucet |
US6904935B2 (en) | 2002-12-18 | 2005-06-14 | Masco Corporation Of Indiana | Valve component with multiple surface layers |
US8555921B2 (en) | 2002-12-18 | 2013-10-15 | Vapor Technologies Inc. | Faucet component with coating |
US7866343B2 (en) | 2002-12-18 | 2011-01-11 | Masco Corporation Of Indiana | Faucet |
DE102004061940A1 (en) * | 2004-12-22 | 2006-07-06 | Aerolas Gmbh, Aerostatische Lager- Lasertechnik | Piston-cylinder-unit for use in compressor, has fluid storage provided between piston and cylinder and formed by fluid discharged from discharging nozzles into storage opening under pressure |
DE102004062302A1 (en) * | 2004-12-23 | 2006-07-13 | BSH Bosch und Siemens Hausgeräte GmbH | Linear compressor and drive unit for it |
US20080000348A1 (en) * | 2004-12-23 | 2008-01-03 | Bsh Bosch Und Siemens Hausgerate Gmbh | Linear Compressor |
DE102004062301A1 (en) * | 2004-12-23 | 2006-07-13 | BSH Bosch und Siemens Hausgeräte GmbH | Linear compressor and drive unit for it |
DE102004062307A1 (en) * | 2004-12-23 | 2006-07-13 | BSH Bosch und Siemens Hausgeräte GmbH | linear compressor |
DE102004062305A1 (en) * | 2004-12-23 | 2006-07-13 | BSH Bosch und Siemens Hausgeräte GmbH | compressor housing |
DE102004062300A1 (en) * | 2004-12-23 | 2006-07-13 | BSH Bosch und Siemens Hausgeräte GmbH | linear compressor |
DE102004062298A1 (en) * | 2004-12-23 | 2006-07-13 | BSH Bosch und Siemens Hausgeräte GmbH | linear compressor |
DE102004062297A1 (en) | 2004-12-23 | 2006-07-13 | BSH Bosch und Siemens Hausgeräte GmbH | Compressor for a refrigeration device |
US20070026205A1 (en) | 2005-08-01 | 2007-02-01 | Vapor Technologies Inc. | Article having patterned decorative coating |
WO2007111689A2 (en) * | 2005-11-08 | 2007-10-04 | Good Earth Tools, Inc. | Sealing rings for abrasive slurry pumps |
ATE433069T1 (en) * | 2006-04-14 | 2009-06-15 | Bhdt Gmbh | SEALING IN HIGH PRESSURE EQUIPMENT |
JP4591722B2 (en) * | 2008-01-24 | 2010-12-01 | 信越化学工業株式会社 | Manufacturing method of ceramic sprayed member |
US8876081B2 (en) | 2009-07-13 | 2014-11-04 | Idex Health & Science Llc | Rotary shear valve assembly with a polymer insert device |
JP5908835B2 (en) * | 2009-07-13 | 2016-04-26 | アイデックス・ヘルス・アンド・サイエンス・リミテッド ライアビリティ カンパニーIdex Health & Science Llc | Rotating shear valve assembly with hard-on-hard seal surface |
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FR2592127B1 (en) * | 1985-12-20 | 1988-03-18 | Prod Sanitaires Cie Internal | MIXER VALVE |
US4733694A (en) * | 1986-01-03 | 1988-03-29 | Masco Corporation | Mixing valve with hydraulic responsive movable field |
-
1985
- 1985-02-12 IT IT67138/85A patent/IT1182433B/en active
-
1986
- 1986-02-04 WO PCT/EP1986/000063 patent/WO1986004658A1/en not_active Application Discontinuation
- 1986-02-04 DE DE8686901374T patent/DE3673592D1/en not_active Revoked
- 1986-02-04 JP JP61501283A patent/JPH0689854B2/en not_active Expired - Lifetime
- 1986-02-04 AU AU55115/86A patent/AU588578B2/en not_active Ceased
- 1986-02-04 EP EP86901374A patent/EP0216810B1/en not_active Revoked
- 1986-02-07 GB GB8618906A patent/GB2187537B/en not_active Expired
- 1986-02-07 EP EP86901598A patent/EP0211939A1/en not_active Withdrawn
- 1986-02-07 WO PCT/US1986/000278 patent/WO1986004548A1/en active Application Filing
- 1986-02-07 CH CH4131/86A patent/CH662630A5/en not_active IP Right Cessation
- 1986-02-07 DE DE19863690041 patent/DE3690041T1/de not_active Withdrawn
- 1986-02-11 ES ES551872A patent/ES8705958A1/en not_active Expired
- 1986-08-29 DK DK413886A patent/DK168715B1/en not_active IP Right Cessation
- 1986-09-22 FI FI863829A patent/FI82538C/en not_active IP Right Cessation
-
1988
- 1988-06-03 US US07/202,176 patent/US4966789A/en not_active Expired - Lifetime
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GB670249A (en) * | 1948-09-22 | 1952-04-16 | Electro Hydraulics Ltd | Improvements in or relating to valves |
FR2207883A1 (en) * | 1972-11-24 | 1974-06-21 | Westinghouse Electric Corp | |
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US4239819A (en) * | 1978-12-11 | 1980-12-16 | Chemetal Corporation | Deposition method and products |
EP0063762A1 (en) * | 1981-04-28 | 1982-11-03 | Hoechst CeramTec Aktiengesellschaft | Disc valve |
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Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0243428B1 (en) * | 1985-10-28 | 1989-09-20 | Battelle-Institut e.V. | Mutually sealing valve elements for mixing taps |
EP0291532A1 (en) * | 1986-12-03 | 1988-11-23 | Masco Corporation Of Indiana | Seal element of hard material sintered from a semi-finished form with organic binder |
EP0291532A4 (en) * | 1986-12-03 | 1990-05-14 | Masco Corp | Seal element of hard material sintered from a semi-finished form with organic binder. |
EP0339083A1 (en) * | 1987-11-10 | 1989-11-02 | Masco Corporation Of Indiana | A pair of seal members of hard material having a low friction coefficient |
EP0339083A4 (en) * | 1987-11-10 | 1990-12-05 | Masco Corporation | A pair of seal members of hard material having a low friction coefficient |
DE3832692A1 (en) * | 1988-09-27 | 1990-03-29 | Leybold Ag | SEALING ELEMENT WITH A SHUT-OFF BODY MADE OF A METAL OR NON-METAL MATERIAL AND METHOD FOR APPLYING HARD MATERIAL LAYERS TO THE SHUT-OFF BODY |
FR2664015A1 (en) * | 1990-06-29 | 1992-01-03 | Tokyo Yogyo Kk | TAP SHUTTER ELEMENT. |
EP0597177A1 (en) * | 1992-09-17 | 1994-05-18 | P+S ARMATUREN GmbH | Gate valve for gas conduits |
FR2708700A1 (en) * | 1993-07-30 | 1995-02-10 | Framatome Sa | Grating-type shutter, for example for a steam turbine |
DE4434302A1 (en) * | 1993-10-01 | 1995-04-13 | Fuji Electric Co Ltd | Mechanical parts, and process for the production of a film thereon |
EP0733837A1 (en) * | 1995-03-21 | 1996-09-25 | Hoechst CeramTec AG | Disc assembly |
US5853839A (en) * | 1995-03-21 | 1998-12-29 | Hoechst Ceramtec Aktiengesellschaft | Composite disk |
Also Published As
Publication number | Publication date |
---|---|
AU5511586A (en) | 1986-08-26 |
FI82538B (en) | 1990-11-30 |
FI82538C (en) | 1991-03-11 |
JPH0689854B2 (en) | 1994-11-14 |
DK413886A (en) | 1986-08-29 |
EP0216810A1 (en) | 1987-04-08 |
US4966789A (en) | 1990-10-30 |
GB2187537A (en) | 1987-09-09 |
JPS62501871A (en) | 1987-07-23 |
WO1986004548A1 (en) | 1986-08-14 |
ES551872A0 (en) | 1987-05-16 |
EP0216810B1 (en) | 1990-08-22 |
DE3673592D1 (en) | 1990-09-27 |
DK168715B1 (en) | 1994-05-24 |
FI863829A0 (en) | 1986-09-22 |
GB2187537B (en) | 1989-06-14 |
DK413886D0 (en) | 1986-08-29 |
FI863829A (en) | 1986-09-22 |
DE3690041T1 (en) | 1987-04-23 |
ES8705958A1 (en) | 1987-05-16 |
IT8567138A1 (en) | 1986-08-12 |
IT1182433B (en) | 1987-10-05 |
IT8567138A0 (en) | 1985-02-12 |
GB8618906D0 (en) | 1986-09-10 |
EP0211939A1 (en) | 1987-03-04 |
CH662630A5 (en) | 1987-10-15 |
AU588578B2 (en) | 1989-09-21 |
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