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FR2115649A5 - Glands for vacuum appts - using seals composed of gas solidified by low temp - Google Patents

Glands for vacuum appts - using seals composed of gas solidified by low temp

Info

Publication number
FR2115649A5
FR2115649A5 FR7042720A FR7042720A FR2115649A5 FR 2115649 A5 FR2115649 A5 FR 2115649A5 FR 7042720 A FR7042720 A FR 7042720A FR 7042720 A FR7042720 A FR 7042720A FR 2115649 A5 FR2115649 A5 FR 2115649A5
Authority
FR
France
Prior art keywords
glands
appts
vacuum
low temp
rollers
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
Application number
FR7042720A
Other languages
French (fr)
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.)
SOGEV STE GLE DU VIDE
Original Assignee
SOGEV STE GLE DU VIDE
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 SOGEV STE GLE DU VIDE filed Critical SOGEV STE GLE DU VIDE
Priority to FR7042720A priority Critical patent/FR2115649A5/en
Application granted granted Critical
Publication of FR2115649A5 publication Critical patent/FR2115649A5/en
Expired legal-status Critical Current

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
    • F16J15/168—Sealings between relatively-moving surfaces which permits material to be continuously conveyed
    • 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
    • F16J15/403—Sealings between relatively-moving surfaces by means of fluid by changing the state of matter

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physical Vapour Deposition (AREA)

Abstract

Method of preventing gas flow due to press. differences between sections of e.g. vacuum appts. around glands necessary to allow movement of shafts or transmission of continuously processed materials, by forming a solid film of gas which sublimes at operating press., maintained by cooling e.g. with liq. nitrogen, in the gap between fixed and moving surfaces. Seal overcomes problems of contamination by lubricants, and is applicable to surfaces of complex shape. Continuous processing of e.g. plastic film in vacuo may be accomplished by passing strip between glands comprising contrarotating rollers, to seal gaps between rollers and vessel walls.
FR7042720A 1970-11-27 1970-11-27 Glands for vacuum appts - using seals composed of gas solidified by low temp Expired FR2115649A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7042720A FR2115649A5 (en) 1970-11-27 1970-11-27 Glands for vacuum appts - using seals composed of gas solidified by low temp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7042720A FR2115649A5 (en) 1970-11-27 1970-11-27 Glands for vacuum appts - using seals composed of gas solidified by low temp

Publications (1)

Publication Number Publication Date
FR2115649A5 true FR2115649A5 (en) 1972-07-07

Family

ID=9064848

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7042720A Expired FR2115649A5 (en) 1970-11-27 1970-11-27 Glands for vacuum appts - using seals composed of gas solidified by low temp

Country Status (1)

Country Link
FR (1) FR2115649A5 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985001262A1 (en) * 1983-09-20 1985-03-28 D.W.G. Partners Limited Cryogenic sealing method
WO2003031849A1 (en) * 2001-10-09 2003-04-17 Marco Maltagliati Sealing device for transport of material between regions at different chemical-physical conditions

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985001262A1 (en) * 1983-09-20 1985-03-28 D.W.G. Partners Limited Cryogenic sealing method
GB2172942A (en) * 1983-09-20 1986-10-01 Dwg Partners Ltd Cryogenic sealing method
WO2003031849A1 (en) * 2001-10-09 2003-04-17 Marco Maltagliati Sealing device for transport of material between regions at different chemical-physical conditions

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Legal Events

Date Code Title Description
ST Notification of lapse