EP0136057A3 - Valve stem seals - Google Patents

Valve stem seals Download PDF

Info

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Withdrawn
Application number
EP84305683A
Other languages
German (de)
French (fr)
Other versions
EP0136057A2 (en
Inventor
Charles William Potter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JH Fenner and Co Ltd
Original Assignee
JH Fenner and Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by JH Fenner and Co Ltd filed Critical JH Fenner and Co Ltd
Publication of EP0136057A2 publication Critical patent/EP0136057A2/en
Publication of EP0136057A3 publication Critical patent/EP0136057A3/en
Withdrawn legal-status Critical Current

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.
EP84305683A 1983-09-01 1984-08-21 Valve stem seals Withdrawn EP0136057A3 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
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

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): DE FR

PUAL Search report despatched

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Designated state(s): DE FR

STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19861217

RIN1 Information on inventor provided before grant (corrected)

Inventor name: POTTER, CHARLES WILLIAM