FR2074749A1 - Vacuum diffusion pump body - and process for casting it - Google Patents

Vacuum diffusion pump body - and process for casting it

Info

Publication number
FR2074749A1
FR2074749A1 FR7002579A FR7002579A FR2074749A1 FR 2074749 A1 FR2074749 A1 FR 2074749A1 FR 7002579 A FR7002579 A FR 7002579A FR 7002579 A FR7002579 A FR 7002579A FR 2074749 A1 FR2074749 A1 FR 2074749A1
Authority
FR
France
Prior art keywords
diffusion pump
pump body
casting
vacuum diffusion
ribs
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Withdrawn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
FR7002579A
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.)
Merlin Gerin SA
Original Assignee
Merlin Gerin SA
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 Merlin Gerin SA filed Critical Merlin Gerin SA
Priority to FR7002579A priority Critical patent/FR2074749A1/en
Publication of FR2074749A1 publication Critical patent/FR2074749A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F9/00—Diffusion pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Positive Displacement Air Blowers (AREA)

Abstract

The vacuum diffusion pump body has a body whose inside face has a part which has a pattern of ribs or grooves in relief on its surface. The ribs are prefabricated of any suitable material and are anchored to the inside of the body by placing in the mould during casting of the body. Variation in the shape, material and arrangement of the ribs are possible.
FR7002579A 1970-01-23 1970-01-23 Vacuum diffusion pump body - and process for casting it Withdrawn FR2074749A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7002579A FR2074749A1 (en) 1970-01-23 1970-01-23 Vacuum diffusion pump body - and process for casting it

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7002579A FR2074749A1 (en) 1970-01-23 1970-01-23 Vacuum diffusion pump body - and process for casting it

Publications (1)

Publication Number Publication Date
FR2074749A1 true FR2074749A1 (en) 1971-10-08

Family

ID=9049568

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7002579A Withdrawn FR2074749A1 (en) 1970-01-23 1970-01-23 Vacuum diffusion pump body - and process for casting it

Country Status (1)

Country Link
FR (1) FR2074749A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0822339A3 (en) * 1996-07-31 1998-06-17 Varian Associates, Inc. Vapor jet vacuum pump and method of manufacture

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2480966A (en) * 1944-10-21 1949-09-06 Smith & Richardson Mfg Company Apparatus for making cast bodies with inserted coils
US3112540A (en) * 1959-06-12 1963-12-03 Kobe Steel Ltd Method of die-casting screws by using screw coils
FR1382330A (en) * 1963-11-08 1964-12-18 Cie Ind Francaise Tubes Elect Improvement in oil vapor diffusion pumps

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2480966A (en) * 1944-10-21 1949-09-06 Smith & Richardson Mfg Company Apparatus for making cast bodies with inserted coils
US3112540A (en) * 1959-06-12 1963-12-03 Kobe Steel Ltd Method of die-casting screws by using screw coils
FR1382330A (en) * 1963-11-08 1964-12-18 Cie Ind Francaise Tubes Elect Improvement in oil vapor diffusion pumps

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0822339A3 (en) * 1996-07-31 1998-06-17 Varian Associates, Inc. Vapor jet vacuum pump and method of manufacture

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Legal Events

Date Code Title Description
ST Notification of lapse