EP0136057A3 - Valve stem seals - Google Patents
Valve stem seals Download PDFInfo
- Publication number
- EP0136057A3 EP0136057A3 EP84305683A EP84305683A EP0136057A3 EP 0136057 A3 EP0136057 A3 EP 0136057A3 EP 84305683 A EP84305683 A EP 84305683A EP 84305683 A EP84305683 A EP 84305683A EP 0136057 A3 EP0136057 A3 EP 0136057A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve stem
- elastomeric moulding
- seal
- elastomeric
- lip
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/08—Valves guides; Sealing of valve stem, e.g. sealing by lubricant
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Abstract
A valve stem seal comprises an elastomeric moulding
adapted to lip seal against a valve stem and, at its lip sealing
region, is helically ribbed on its stem-adjacent surface to define
lubricant control passages. The elastomeric moulding also pro
vides downstream of its lip seal, in terms of lubricant flow, a
control collar adapted to contact the valve stem to provide both a
compensation for lateral loading of the valve stem resulting from
rocker action and a secondary seal.
The control collar may be integral with the elastomeric
moulding but it is preferred that it be constituted by a plastics ring,
preferably but not exclusively formed of PTFE, held within the
elastomeric moulding in non-bonded relationship.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB838323418A GB8323418D0 (en) | 1983-09-01 | 1983-09-01 | Valve stem seals |
GB8323418 | 1983-09-01 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0136057A2 EP0136057A2 (en) | 1985-04-03 |
EP0136057A3 true EP0136057A3 (en) | 1986-04-16 |
Family
ID=10548155
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP84305683A Withdrawn EP0136057A3 (en) | 1983-09-01 | 1984-08-21 | Valve stem seals |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0136057A3 (en) |
GB (2) | GB8323418D0 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4763618A (en) * | 1987-04-03 | 1988-08-16 | Microdot Inc. | Valve stem oil deflector |
US4834037A (en) * | 1987-10-14 | 1989-05-30 | Dana Corporation | Unitary molded plastic valve seal |
DE3836578A1 (en) * | 1988-10-27 | 1990-05-03 | Goetze Ag | Valve stem sealing for internal combustion engines |
DE19945348C2 (en) * | 1999-09-22 | 2003-07-10 | Freudenberg Carl Kg | Seal for reciprocating machine parts |
US6764079B1 (en) * | 2002-04-19 | 2004-07-20 | Dana Corporation | Valve seal assembly with straight-walled retainer |
CA2521353A1 (en) * | 2004-09-29 | 2006-03-29 | Dana Corporation | Upside-down square-up valve stem seal |
JP2007298143A (en) * | 2006-05-02 | 2007-11-15 | Nok Corp | Oil seal |
JP5751450B2 (en) * | 2011-07-09 | 2015-07-22 | Nok株式会社 | Valve stem seal device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1078586A (en) * | 1912-04-22 | 1913-11-11 | George C Knauff | Socket for electric lamps. |
GB2049071A (en) * | 1979-05-07 | 1980-12-17 | Supertex Spa | Seals |
EP0112959A2 (en) * | 1982-12-08 | 1984-07-11 | Firma Carl Freudenberg | Seal |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2105403B (en) * | 1981-06-17 | 1984-09-19 | Fenner Co Ltd J H | I c engine intake and exhaust valve stem seals |
-
1983
- 1983-09-01 GB GB838323418A patent/GB8323418D0/en active Pending
-
1984
- 1984-08-21 GB GB08421222A patent/GB2145771B/en not_active Expired
- 1984-08-21 EP EP84305683A patent/EP0136057A3/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1078586A (en) * | 1912-04-22 | 1913-11-11 | George C Knauff | Socket for electric lamps. |
GB2049071A (en) * | 1979-05-07 | 1980-12-17 | Supertex Spa | Seals |
EP0112959A2 (en) * | 1982-12-08 | 1984-07-11 | Firma Carl Freudenberg | Seal |
Also Published As
Publication number | Publication date |
---|---|
GB8323418D0 (en) | 1983-10-05 |
GB2145771B (en) | 1987-06-24 |
GB8421222D0 (en) | 1984-09-26 |
GB2145771A (en) | 1985-04-03 |
EP0136057A2 (en) | 1985-04-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): DE FR |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): DE FR |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19861217 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: POTTER, CHARLES WILLIAM |