CA1243053A - Ferrofluid-pole-piece-magnet apparatus and method of manufacture - Google Patents
Ferrofluid-pole-piece-magnet apparatus and method of manufactureInfo
- Publication number
- CA1243053A CA1243053A CA000455123A CA455123A CA1243053A CA 1243053 A CA1243053 A CA 1243053A CA 000455123 A CA000455123 A CA 000455123A CA 455123 A CA455123 A CA 455123A CA 1243053 A CA1243053 A CA 1243053A
- Authority
- CA
- Canada
- Prior art keywords
- pole
- piece
- pole piece
- washer
- elements
- 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
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 239000011554 ferrofluid Substances 0.000 claims abstract description 35
- 238000004873 anchoring Methods 0.000 claims abstract description 30
- 229920000642 polymer Polymers 0.000 claims abstract 2
- 239000000463 material Substances 0.000 claims description 55
- 238000007373 indentation Methods 0.000 claims description 22
- 239000002184 metal Substances 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 230000009977 dual effect Effects 0.000 claims description 12
- 229920001778 nylon Polymers 0.000 claims description 12
- 239000004677 Nylon Substances 0.000 claims description 9
- 238000010138 die striking Methods 0.000 claims description 9
- 239000002861 polymer material Substances 0.000 claims description 9
- 238000001746 injection moulding Methods 0.000 claims description 8
- 239000000696 magnetic material Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 5
- 239000006249 magnetic particle Substances 0.000 claims description 5
- 230000033001 locomotion Effects 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims 2
- 230000002093 peripheral effect Effects 0.000 claims 2
- 230000014759 maintenance of location Effects 0.000 claims 1
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000007259 addition reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 229940000425 combination drug Drugs 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 235000013980 iron oxide Nutrition 0.000 description 1
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011236 particulate material Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 239000004634 thermosetting polymer Substances 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
- F16J15/43—Sealings between relatively-moving surfaces by means of fluid kept in sealing position by magnetic force
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Powder Metallurgy (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US497,856 | 1983-05-25 | ||
| US06/497,856 US4489950A (en) | 1983-05-25 | 1983-05-25 | Ferrofluid-pole-piece-magnet apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1243053A true CA1243053A (en) | 1988-10-11 |
Family
ID=23978588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000455123A Expired CA1243053A (en) | 1983-05-25 | 1984-05-25 | Ferrofluid-pole-piece-magnet apparatus and method of manufacture |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4489950A (cg-RX-API-DMAC7.html) |
| EP (1) | EP0127472A3 (cg-RX-API-DMAC7.html) |
| JP (1) | JPS59226768A (cg-RX-API-DMAC7.html) |
| CA (1) | CA1243053A (cg-RX-API-DMAC7.html) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4628384A (en) * | 1983-08-26 | 1986-12-09 | Ferrofluidics Corporation | Bearing assembly with integrated ferrofluid seal |
| EP0210527B1 (en) * | 1985-07-24 | 1990-06-06 | Hitachi, Ltd. | Magnetic liquid seal |
| US4734606A (en) * | 1985-11-20 | 1988-03-29 | Hajec Chester S | Electric motor with ferrofluid bearing |
| FR2610864B1 (fr) * | 1987-02-18 | 1989-06-16 | Atochem | Procede de fabrication de profiles de polymere thermoplastique par pultrusion - appareillage - produits obtenus |
| JPH0192563U (cg-RX-API-DMAC7.html) * | 1987-12-14 | 1989-06-16 | ||
| JPH0192562U (cg-RX-API-DMAC7.html) * | 1987-12-14 | 1989-06-16 | ||
| US5332460A (en) * | 1988-08-09 | 1994-07-26 | Nippon Seiko Kabushiki Kaisha | Method of manufacturing a seal ring for magnetic fluid seal device |
| US5323688A (en) * | 1992-03-05 | 1994-06-28 | Walker Frank H | Hydraulic regenerative braking and four wheel drive system |
| US5418069A (en) * | 1993-11-10 | 1995-05-23 | Learman; Thomas J. | Formable composite magnetic flux concentrator and method of making the concentrator |
| US5529747A (en) * | 1993-11-10 | 1996-06-25 | Learflux, Inc. | Formable composite magnetic flux concentrator and method of making the concentrator |
| US5660397A (en) * | 1994-09-23 | 1997-08-26 | Holtkamp; William H. | Devices employing a liquid-free medium |
| US5975536A (en) * | 1997-09-30 | 1999-11-02 | Rigaku/Usa, Inc. | Rotary motion feedthrough with rotating magnet system |
| US6845986B2 (en) * | 2002-04-26 | 2005-01-25 | Stemco Llc | Low torque seal assembly |
| DE102006047966A1 (de) * | 2006-07-07 | 2008-01-10 | Asm Automation Sensorik Messtechnik Gmbh | Gleitelement mit Positionsgeber |
| US20120049663A1 (en) * | 2010-09-01 | 2012-03-01 | Gm Global Technology Operations, Inc. | Rotor and method of forming same |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB783881A (en) * | 1954-03-05 | 1957-10-02 | Vickers Electrical Co Ltd | Improvements relating to shaft and like seals |
| DE2034501A1 (de) * | 1970-07-11 | 1972-01-27 | Robert Bosch Gmbh, 7000 Stuttgart | Steuerspiegelkörper für Axialkolbenmaschine |
| US3788650A (en) * | 1971-10-04 | 1974-01-29 | Magnetic Seal Corp | Rotary seal |
| US3740060A (en) * | 1971-11-03 | 1973-06-19 | Avco Corp | A shaft seal |
| JPS54116767A (en) * | 1978-03-02 | 1979-09-11 | Toshiba Corp | Manufacturing of gasket for refrigerator |
| US4252328A (en) * | 1980-05-01 | 1981-02-24 | Ferrofluidics Corporation | Self-activating ferrofluid seal and method |
| JPS5712167A (en) * | 1980-06-23 | 1982-01-22 | Nippon Seiko Kk | Magnetic fluid sealing device |
| US4357021A (en) * | 1980-11-19 | 1982-11-02 | Ferrofluidics Corporation | Ferrofluid rotary-shaft seal apparatus and method |
| US4406467A (en) * | 1982-12-06 | 1983-09-27 | Atlantic Richfield Company | High pressure electrical isolation flange gasket |
| US4407508A (en) * | 1982-12-16 | 1983-10-04 | Ferrofluidics Corporation | Single-pole-piece ferrofluid seal apparatus and exclusion seal system |
-
1983
- 1983-05-25 US US06/497,856 patent/US4489950A/en not_active Expired - Fee Related
-
1984
- 1984-05-25 CA CA000455123A patent/CA1243053A/en not_active Expired
- 1984-05-25 JP JP59106335A patent/JPS59226768A/ja active Granted
- 1984-05-25 EP EP84303569A patent/EP0127472A3/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| EP0127472A2 (en) | 1984-12-05 |
| JPS59226768A (ja) | 1984-12-19 |
| US4489950A (en) | 1984-12-25 |
| EP0127472A3 (en) | 1985-08-28 |
| JPH0139513B2 (cg-RX-API-DMAC7.html) | 1989-08-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |