NL7403784A - - Google Patents
Info
- Publication number
- NL7403784A NL7403784A NL7403784A NL7403784A NL7403784A NL 7403784 A NL7403784 A NL 7403784A NL 7403784 A NL7403784 A NL 7403784A NL 7403784 A NL7403784 A NL 7403784A NL 7403784 A NL7403784 A NL 7403784A
- Authority
- NL
- Netherlands
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D19/00—Axial-flow pumps
- F04D19/02—Multi-stage pumps
- F04D19/04—Multi-stage pumps specially adapted to the production of a high vacuum, e.g. molecular pumps
- F04D19/044—Holweck-type pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Non-Positive Displacement Air Blowers (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7310183A FR2222886A5 (xx) | 1973-03-21 | 1973-03-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL7403784A true NL7403784A (xx) | 1974-09-24 |
Family
ID=9116654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL7403784A NL7403784A (xx) | 1973-03-21 | 1974-03-20 |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US3912415A (xx) |
| JP (1) | JPS49128306A (xx) |
| BE (1) | BE812288A (xx) |
| CH (1) | CH579219A5 (xx) |
| DE (1) | DE2411247C2 (xx) |
| FR (1) | FR2222886A5 (xx) |
| GB (1) | GB1459933A (xx) |
| IT (1) | IT1014568B (xx) |
| NL (1) | NL7403784A (xx) |
| SU (1) | SU667162A3 (xx) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8105614A (nl) * | 1981-12-14 | 1983-07-01 | Ultra Centrifuge Nederland Nv | Hoog-vacuum moleculair pomp. |
| US4708586A (en) * | 1985-08-14 | 1987-11-24 | Rikagaku Kenkyusho | Thread groove type vacuum pump |
| JPS6238899A (ja) * | 1985-08-14 | 1987-02-19 | Osaka Shinku Kiki Seisakusho:Kk | ねじ溝式真空ポンプ |
| JPS6351195U (xx) * | 1986-09-20 | 1988-04-06 | ||
| JPH06205706A (ja) * | 1992-12-09 | 1994-07-26 | Ciba Geigy Ag | コンタクトレンズケース |
| GB2585936A (en) * | 2019-07-25 | 2021-01-27 | Edwards Ltd | Drag pump |
| EP4194700A1 (de) * | 2023-04-18 | 2023-06-14 | Pfeiffer Vacuum Technology AG | Vakuumpumpe mit einer holweck-pumpstufe mit veränderlicher holweck-geometrie |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR536278A (fr) * | 1921-06-01 | 1922-04-29 | Pompe hélicoïdale pour vides élevés | |
| US1492846A (en) * | 1922-05-11 | 1924-05-06 | Mullard Radio Valve Co Ltd | Vacuum pump |
| FR1293546A (fr) * | 1961-02-09 | 1962-05-18 | Alsacienne Constr Meca | Perfectionnements aux pompes moléculaires rotatives |
| US3697190A (en) * | 1970-11-03 | 1972-10-10 | Walter D Haentjens | Truncated conical drag pump |
| DE2118738C3 (de) * | 1971-04-17 | 1974-11-14 | Dornier Dmbh, 7990 Friedrichshafen | Molekularpumpe, bestehend aus einem mit Innengewinde versehenen zylindrischen Stator |
-
1973
- 1973-03-21 FR FR7310183A patent/FR2222886A5/fr not_active Expired
-
1974
- 1974-03-08 DE DE2411247A patent/DE2411247C2/de not_active Expired
- 1974-03-08 CH CH326074A patent/CH579219A5/xx not_active IP Right Cessation
- 1974-03-14 BE BE141990A patent/BE812288A/xx unknown
- 1974-03-15 GB GB1167374A patent/GB1459933A/en not_active Expired
- 1974-03-18 JP JP49030147A patent/JPS49128306A/ja active Pending
- 1974-03-20 SU SU742008772A patent/SU667162A3/ru active
- 1974-03-20 NL NL7403784A patent/NL7403784A/xx not_active Application Discontinuation
- 1974-03-21 US US453498A patent/US3912415A/en not_active Expired - Lifetime
- 1974-04-08 IT IT20962/74A patent/IT1014568B/it active
Also Published As
| Publication number | Publication date |
|---|---|
| BE812288A (fr) | 1974-09-16 |
| DE2411247A1 (de) | 1974-09-26 |
| US3912415A (en) | 1975-10-14 |
| GB1459933A (en) | 1976-12-31 |
| SU667162A3 (ru) | 1979-06-05 |
| JPS49128306A (xx) | 1974-12-09 |
| FR2222886A5 (xx) | 1974-10-18 |
| IT1014568B (it) | 1977-04-30 |
| DE2411247C2 (de) | 1983-03-24 |
| CH579219A5 (xx) | 1976-08-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| BV | The patent application has lapsed |