JPS5547050A - Cylindrical surface seal - Google Patents
Cylindrical surface sealInfo
- Publication number
- JPS5547050A JPS5547050A JP12007478A JP12007478A JPS5547050A JP S5547050 A JPS5547050 A JP S5547050A JP 12007478 A JP12007478 A JP 12007478A JP 12007478 A JP12007478 A JP 12007478A JP S5547050 A JPS5547050 A JP S5547050A
- Authority
- JP
- Japan
- Prior art keywords
- fluid
- grooves
- sealing
- cylindrical surface
- increased
- 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.)
- Pending
Links
Landscapes
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Abstract
PURPOSE: To improve sealing performance of the seal and increase the PV value, by providing a sealing surface including axially inclined grooves disposed on the opposite side of sealing fluid and a cylindrical surface with no grooves located between said grooves and sealing fluid.
CONSTITUTION: Fluid in grooves 9 is forced into a sliding surface formed between grooves 9 and cylindrical surface 10 by reason of wedge function, so that thickness of the fluid film at the portion is increased and the PV value at the portion is resultantly increased. Around the inner circumferential surface of lip 6, thicknes of fluid film at the portion located on the side of grooves is increased by the above-mentioned wedge function. On the other hand, although thickness of fluid film is increased also on the side of cylindrical surface 10 by reason of resiliency of lip 6, thickness of fluid film is decreased gradually toward sealing fluid X since expansion of lip 6 caused by fluid forced thereinto is larger on the side of grooves 9. That is, sealing surface by cylindrical surface 10 forms a conical surface whose clearance is decreased gradually toward sealing fluid X, so that sealing performance of the cylindrical surface seal can be improved.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12007478A JPS5547050A (en) | 1978-09-29 | 1978-09-29 | Cylindrical surface seal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12007478A JPS5547050A (en) | 1978-09-29 | 1978-09-29 | Cylindrical surface seal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5547050A true JPS5547050A (en) | 1980-04-02 |
Family
ID=14777248
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12007478A Pending JPS5547050A (en) | 1978-09-29 | 1978-09-29 | Cylindrical surface seal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5547050A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56150670A (en) * | 1980-02-07 | 1981-11-21 | Freudenberg Carl | Hydrodynamic shaft seal |
US4344631A (en) * | 1980-11-18 | 1982-08-17 | Mechanical Technology Incorporated | Pressure insensitive lip seal |
JPS5862048A (en) * | 1981-10-09 | 1983-04-13 | 東レ株式会社 | Polyester film |
JPS5862826A (en) * | 1981-10-12 | 1983-04-14 | Toray Ind Inc | Polyester film for magnetic recording medium |
JPS59176043A (en) * | 1983-03-26 | 1984-10-05 | ユニチカ株式会社 | Laminated film and manufacture thereof |
EP0195682A2 (en) * | 1985-03-22 | 1986-09-24 | Dowty Seals Limited | Seals |
US5364684A (en) * | 1991-07-10 | 1994-11-15 | Diafoil Hoechst Company, Limited | Magnetic recording medium comprising a polyethylene-2,6-naphthalate multilayered film coated on both sides by a coating layer |
US9062774B2 (en) | 2012-03-21 | 2015-06-23 | Federal-Mogul Corporation | Radial shaft seal with static and hydrodynamic sealing features |
EP2843269A4 (en) * | 2012-04-27 | 2015-08-05 | Nok Corp | Sealing device |
-
1978
- 1978-09-29 JP JP12007478A patent/JPS5547050A/en active Pending
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56150670A (en) * | 1980-02-07 | 1981-11-21 | Freudenberg Carl | Hydrodynamic shaft seal |
JPS6261825B2 (en) * | 1980-02-07 | 1987-12-23 | Freudenberg Carl | |
US4344631A (en) * | 1980-11-18 | 1982-08-17 | Mechanical Technology Incorporated | Pressure insensitive lip seal |
JPS622986B2 (en) * | 1981-10-09 | 1987-01-22 | Toray Industries | |
JPS5862048A (en) * | 1981-10-09 | 1983-04-13 | 東レ株式会社 | Polyester film |
JPS5862826A (en) * | 1981-10-12 | 1983-04-14 | Toray Ind Inc | Polyester film for magnetic recording medium |
JPH021005B2 (en) * | 1981-10-12 | 1990-01-10 | Toray Industries | |
JPS59176043A (en) * | 1983-03-26 | 1984-10-05 | ユニチカ株式会社 | Laminated film and manufacture thereof |
JPH0455866B2 (en) * | 1983-03-26 | 1992-09-04 | Unitika Ltd | |
EP0195682A2 (en) * | 1985-03-22 | 1986-09-24 | Dowty Seals Limited | Seals |
US5364684A (en) * | 1991-07-10 | 1994-11-15 | Diafoil Hoechst Company, Limited | Magnetic recording medium comprising a polyethylene-2,6-naphthalate multilayered film coated on both sides by a coating layer |
US9062774B2 (en) | 2012-03-21 | 2015-06-23 | Federal-Mogul Corporation | Radial shaft seal with static and hydrodynamic sealing features |
EP2843269A4 (en) * | 2012-04-27 | 2015-08-05 | Nok Corp | Sealing device |
US9593776B2 (en) | 2012-04-27 | 2017-03-14 | Nok Corporation | Sealing device |
US9644743B2 (en) | 2012-04-27 | 2017-05-09 | Nok Corporation | Sealing device |
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