CH674887A5 - - Google Patents
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- Publication number
- CH674887A5 CH674887A5 CH234786A CH234786A CH674887A5 CH 674887 A5 CH674887 A5 CH 674887A5 CH 234786 A CH234786 A CH 234786A CH 234786 A CH234786 A CH 234786A CH 674887 A5 CH674887 A5 CH 674887A5
- Authority
- CH
- Switzerland
- Prior art keywords
- magnetic
- pole
- seal
- gap
- air gap
- Prior art date
Links
- 230000005291 magnetic effect Effects 0.000 claims description 28
- 239000007788 liquid Substances 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 7
- 239000000696 magnetic material Substances 0.000 claims description 5
- 239000002907 paramagnetic material Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims 1
- 238000007765 extrusion coating Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001364 causal effect Effects 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 230000015654 memory Effects 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- 230000005298 paramagnetic effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035939 shock Effects 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)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH234786A CH674887A5 (enrdf_load_stackoverflow) | 1986-06-10 | 1986-06-10 | |
| DE19873719116 DE3719116B4 (de) | 1986-06-10 | 1987-06-06 | Hartplattenspeicher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH234786A CH674887A5 (enrdf_load_stackoverflow) | 1986-06-10 | 1986-06-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH674887A5 true CH674887A5 (enrdf_load_stackoverflow) | 1990-07-31 |
Family
ID=4231671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH234786A CH674887A5 (enrdf_load_stackoverflow) | 1986-06-10 | 1986-06-10 |
Country Status (2)
| Country | Link |
|---|---|
| CH (1) | CH674887A5 (enrdf_load_stackoverflow) |
| DE (1) | DE3719116B4 (enrdf_load_stackoverflow) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE35718E (en) * | 1988-06-22 | 1998-01-27 | Hitachi, Ltd. | Bearing apparatus |
| JPH0612128B2 (ja) * | 1988-06-22 | 1994-02-16 | 株式会社日立製作所 | 軸受装置 |
| JP7133263B2 (ja) * | 2017-09-29 | 2022-09-08 | グローブライド株式会社 | 磁性流体シール装置及び磁性流体シール付き軸受 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4171818A (en) * | 1977-04-04 | 1979-10-23 | Ferrofluidics Corporation | Dynamic lip seal using ferrofluids as sealant/lubricant |
| US4357022A (en) * | 1980-11-19 | 1982-11-02 | Ferrofluidics Corporation | Ferrofluid rotary-shaft seal apparatus and method |
| US4340233A (en) * | 1980-11-19 | 1982-07-20 | Ferrofluidics Corporation | Ferrofluid seal apparatus |
| US4486026A (en) * | 1982-02-10 | 1984-12-04 | Nippon Seiko K.K. | Sealing and bearing means by use of ferrofluid |
| US4436313A (en) * | 1982-04-30 | 1984-03-13 | Japanese National Railways | Device for sealing a propeller shaft against invasion of sea water |
| NL8601017A (nl) * | 1986-04-21 | 1987-11-16 | Skf Ind Trading & Dev | Wentellager. |
| DE3713567C1 (de) * | 1987-04-23 | 1987-12-03 | Iris Diesing | Mehrstufige Dichtungsvorrichtung mit Ferrofluid |
-
1986
- 1986-06-10 CH CH234786A patent/CH674887A5/de not_active IP Right Cessation
-
1987
- 1987-06-06 DE DE19873719116 patent/DE3719116B4/de not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE3719116A1 (de) | 1987-12-17 |
| DE3719116B4 (de) | 2006-05-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUE | Assignment |
Owner name: PAPST LICENSING GMBH |
|
| PL | Patent ceased |