GB2192676B - A magnetic fluid seal apparatus - Google Patents
A magnetic fluid seal apparatusInfo
- Publication number
- GB2192676B GB2192676B GB8714376A GB8714376A GB2192676B GB 2192676 B GB2192676 B GB 2192676B GB 8714376 A GB8714376 A GB 8714376A GB 8714376 A GB8714376 A GB 8714376A GB 2192676 B GB2192676 B GB 2192676B
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnetic fluid
- fluid seal
- seal apparatus
- magnetic
- seal
- 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 - Fee Related
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
- 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 (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9027376A GB2236363B (en) | 1986-06-24 | 1990-12-18 | Magnetic fluid seal apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH253886A CH676740A5 (fr) | 1986-06-24 | 1986-06-24 |
Publications (3)
Publication Number | Publication Date |
---|---|
GB8714376D0 GB8714376D0 (en) | 1987-07-22 |
GB2192676A GB2192676A (en) | 1988-01-20 |
GB2192676B true GB2192676B (en) | 1991-07-31 |
Family
ID=4236046
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8714376A Expired - Fee Related GB2192676B (en) | 1986-06-24 | 1987-06-19 | A magnetic fluid seal apparatus |
Country Status (3)
Country | Link |
---|---|
CH (1) | CH676740A5 (fr) |
DE (2) | DE3720024A1 (fr) |
GB (1) | GB2192676B (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3924434A1 (de) * | 1989-07-24 | 1991-01-31 | Freudenberg Carl Fa | Ferrofluid-dichtung |
DE4411367A1 (de) * | 1994-03-31 | 1995-10-05 | Burgmann Dichtungswerk Feodor | Spalttopfgedichtete magnetische Antriebseinrichtung |
DE102014014770B4 (de) * | 2014-10-10 | 2016-10-27 | Sew-Eurodrive Gmbh & Co Kg | Elektromotor mit einem Stator und Rotor |
DE102019218446A1 (de) * | 2019-11-28 | 2021-06-02 | Volkswagen Aktiengesellschaft | Elektromaschine mit reibungsarmer Luftspaltabdichtung und Kraftfahrzeug |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB680233A (en) * | 1948-12-23 | 1952-10-01 | Adolph Razdowitz | Improvements in or relating to sealing devices for joints |
GB2104165A (en) * | 1981-06-15 | 1983-03-02 | Rigaku Denki Co Ltd | Magnetic fluid sealing device |
GB2130662A (en) * | 1982-09-16 | 1984-06-06 | Rigaku Keisoku Kk | Magnetic fluid sealing device |
EP0182656A2 (fr) * | 1984-11-20 | 1986-05-28 | Ferrofluidics Corporation | Appareil et procédé d'étanchéité ferrofluidique |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4526380A (en) * | 1984-01-27 | 1985-07-02 | Ferrofluidics Corporation | Single pole piece multiple-stage ferrofluid seal apparatus |
US4526382A (en) * | 1984-05-03 | 1985-07-02 | Ferrofluidics Corporation | Radially polarized multiple-stage ferrofluid seal apparatus |
-
1986
- 1986-06-24 CH CH253886A patent/CH676740A5/de not_active IP Right Cessation
-
1987
- 1987-06-16 DE DE19873720024 patent/DE3720024A1/de not_active Ceased
- 1987-06-16 DE DE8708440U patent/DE8708440U1/de not_active Expired
- 1987-06-19 GB GB8714376A patent/GB2192676B/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB680233A (en) * | 1948-12-23 | 1952-10-01 | Adolph Razdowitz | Improvements in or relating to sealing devices for joints |
GB2104165A (en) * | 1981-06-15 | 1983-03-02 | Rigaku Denki Co Ltd | Magnetic fluid sealing device |
GB2130662A (en) * | 1982-09-16 | 1984-06-06 | Rigaku Keisoku Kk | Magnetic fluid sealing device |
EP0182656A2 (fr) * | 1984-11-20 | 1986-05-28 | Ferrofluidics Corporation | Appareil et procédé d'étanchéité ferrofluidique |
Also Published As
Publication number | Publication date |
---|---|
DE3720024A1 (de) | 1988-01-07 |
DE8708440U1 (de) | 1987-09-03 |
CH676740A5 (fr) | 1991-02-28 |
GB2192676A (en) | 1988-01-20 |
GB8714376D0 (en) | 1987-07-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20000619 |