JPS49128306A - - Google Patents
Info
- Publication number
- JPS49128306A JPS49128306A JP49030147A JP3014774A JPS49128306A JP S49128306 A JPS49128306 A JP S49128306A JP 49030147 A JP49030147 A JP 49030147A JP 3014774 A JP3014774 A JP 3014774A JP S49128306 A JPS49128306 A JP S49128306A
- Authority
- JP
- Japan
- 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.)
- Pending
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
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7310183A FR2222886A5 (en) | 1973-03-21 | 1973-03-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS49128306A true JPS49128306A (en) | 1974-12-09 |
Family
ID=9116654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP49030147A Pending JPS49128306A (en) | 1973-03-21 | 1974-03-18 |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US3912415A (en) |
| JP (1) | JPS49128306A (en) |
| BE (1) | BE812288A (en) |
| CH (1) | CH579219A5 (en) |
| DE (1) | DE2411247C2 (en) |
| FR (1) | FR2222886A5 (en) |
| GB (1) | GB1459933A (en) |
| IT (1) | IT1014568B (en) |
| NL (1) | NL7403784A (en) |
| SU (1) | SU667162A3 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6238899A (en) * | 1985-08-14 | 1987-02-19 | Osaka Shinku Kiki Seisakusho:Kk | Spiral groove type vacuum pump |
| JPS6351195U (en) * | 1986-09-20 | 1988-04-06 |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8105614A (en) * | 1981-12-14 | 1983-07-01 | Ultra Centrifuge Nederland Nv | HIGH VACUUM MOLECULAR PUMP. |
| US4708586A (en) * | 1985-08-14 | 1987-11-24 | Rikagaku Kenkyusho | Thread groove type vacuum pump |
| JPH06205706A (en) * | 1992-12-09 | 1994-07-26 | Ciba Geigy Ag | Contact lens case |
| GB2585936A (en) * | 2019-07-25 | 2021-01-27 | Edwards Ltd | Drag pump |
| EP4194700A1 (en) * | 2023-04-18 | 2023-06-14 | Pfeiffer Vacuum Technology AG | Vacuum pump with a holweck pump stage with variable holweck geometry |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR536278A (en) * | 1921-06-01 | 1922-04-29 | Helical pump for high vacuum | |
| US1492846A (en) * | 1922-05-11 | 1924-05-06 | Mullard Radio Valve Co Ltd | Vacuum pump |
| FR1293546A (en) * | 1961-02-09 | 1962-05-18 | Alsacienne Constr Meca | Improvements to rotary molecular pumps |
| US3697190A (en) * | 1970-11-03 | 1972-10-10 | Walter D Haentjens | Truncated conical drag pump |
| DE2118738C3 (en) * | 1971-04-17 | 1974-11-14 | Dornier Dmbh, 7990 Friedrichshafen | Molecular pump, consisting of a cylindrical stator provided with an internal thread |
-
1973
- 1973-03-21 FR FR7310183A patent/FR2222886A5/fr not_active Expired
-
1974
- 1974-03-08 DE DE2411247A patent/DE2411247C2/en not_active Expired
- 1974-03-08 CH CH326074A patent/CH579219A5/xx not_active IP Right Cessation
- 1974-03-14 BE BE141990A patent/BE812288A/en 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/en 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/en active
Non-Patent Citations (1)
| Title |
|---|
| SCIENTIFIC FOUNDATIONS OF VACUUM TECHNIGUE=1955 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6238899A (en) * | 1985-08-14 | 1987-02-19 | Osaka Shinku Kiki Seisakusho:Kk | Spiral groove type vacuum pump |
| JPS6351195U (en) * | 1986-09-20 | 1988-04-06 |
Also Published As
| Publication number | Publication date |
|---|---|
| NL7403784A (en) | 1974-09-24 |
| BE812288A (en) | 1974-09-16 |
| DE2411247A1 (en) | 1974-09-26 |
| US3912415A (en) | 1975-10-14 |
| GB1459933A (en) | 1976-12-31 |
| SU667162A3 (en) | 1979-06-05 |
| FR2222886A5 (en) | 1974-10-18 |
| IT1014568B (en) | 1977-04-30 |
| DE2411247C2 (en) | 1983-03-24 |
| CH579219A5 (en) | 1976-08-31 |