GB788385A - Rotary seal - Google Patents
Rotary sealInfo
- Publication number
- GB788385A GB788385A GB1956456A GB1956456A GB788385A GB 788385 A GB788385 A GB 788385A GB 1956456 A GB1956456 A GB 1956456A GB 1956456 A GB1956456 A GB 1956456A GB 788385 A GB788385 A GB 788385A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ring
- magnetic
- rings
- shaft
- plugs
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3436—Pressing means
- F16J15/3444—Pressing means by magnetic attraction
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
Abstract
788,385. Stuffing-box substitutes. MAGNETIC SEAL CORPORATION. June 25, 1956, No. 19564/56. Class 122 (5). [Also in Group XXII] A rotary shaft seal comprises two sealing rings 17, 18 urged into facial sealing contact by magnetic means carried by one of the rings, one ring 17 being fixed to the shaft housing 11 and the other 18 being rotatable with the shaft 15, axially slidable thereon and sealed thereto by an O-ring 26 of resilient material compressed between the shaft and the ring. Both rings 17 and 18 are made of low-carbon steel and a number of circumferentially spaced plugs 40 of magnetizable material such as " Alnico " are secured in recesses in the ring 17 which, with the plugs, is permanently magnetized and attracts the ring 18 so that a carbon insert 43 in the latter contacts a lip 19 on the ring 17. The magnetic contact pressure between the rings is augmented by the pressure differential across the ring 18 due to the sealed fluid pressure. Each plug 40 is surrounded by a sleeve 39 of non-magnetic material, such as lead or brass or, alternatively, the plugs may be coated with non-magnetic material. If the housing is made of magnetic conducting material a sleeve 44 of non-magnetic material is interposed between the ring 17 and the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1956456A GB788385A (en) | 1956-06-25 | 1956-06-25 | Rotary seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1956456A GB788385A (en) | 1956-06-25 | 1956-06-25 | Rotary seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB788385A true GB788385A (en) | 1958-01-02 |
Family
ID=10131486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1956456A Expired GB788385A (en) | 1956-06-25 | 1956-06-25 | Rotary seal |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB788385A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4817964A (en) * | 1985-09-25 | 1989-04-04 | Ferrofluidics Corporation | Ferrofluid exclusion seal and method of assembly |
| US5078411A (en) * | 1989-01-18 | 1992-01-07 | Norman Geco | Variable magnetic rotary seal |
| US11143308B2 (en) * | 2017-09-04 | 2021-10-12 | Aes Engineering Ltd. | Bearing protector |
-
1956
- 1956-06-25 GB GB1956456A patent/GB788385A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4817964A (en) * | 1985-09-25 | 1989-04-04 | Ferrofluidics Corporation | Ferrofluid exclusion seal and method of assembly |
| US5078411A (en) * | 1989-01-18 | 1992-01-07 | Norman Geco | Variable magnetic rotary seal |
| US11143308B2 (en) * | 2017-09-04 | 2021-10-12 | Aes Engineering Ltd. | Bearing protector |
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