GB1330150A - Impeller assemblies for high vacuum pumps - Google Patents
Impeller assemblies for high vacuum pumpsInfo
- Publication number
- GB1330150A GB1330150A GB4986270A GB4986270A GB1330150A GB 1330150 A GB1330150 A GB 1330150A GB 4986270 A GB4986270 A GB 4986270A GB 4986270 A GB4986270 A GB 4986270A GB 1330150 A GB1330150 A GB 1330150A
- Authority
- GB
- United Kingdom
- Prior art keywords
- elements
- series
- blades
- assembly
- oct
- 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
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
- F04D19/042—Turbomolecular vacuum pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Non-Positive Displacement Air Blowers (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
1330150 Molecular pumps SARGENT-WELCH SCIENTIFIC CO 21 Oct 1970 [27 Oct 1969] 49862/70 Heading F1C An impeller assembly of an axial-flow molecular pump, comprises of series of rotor elements 42, Fig.3, having annular surfaces 80, 82 thereon which are forced into abutment by a clamping nut 56 screwed on to shaft 52. The elements are of reduced axial thickness at their central portions to ensure abutment is confined to surfaces 80, 82. The blades of some of the elements each comprise three sections 98, 100, 102 each having a working face (106), Fig. 4 (not shown), inclined to the plane of rotation, whereas the blades of the other elements each have a working face formed only at the tip portion 108 thereof. The blades may be integrally formed with their associated hubs, or have root portions engaged in splined or T-shaped grooves in the hubs. The assembly may be of the double ended type and comprise a similar series of rotor elements at the other end of the shaft 52, the two series being spaced apart by sleeve 62. Such an assembly is arranged in a casing having an inlet between the two series and a respective outlet at the remote end of each series, the casing also having bladed stator elements located between adjacent rotor elements, Fig. 1 (not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US86996869A | 1969-10-27 | 1969-10-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1330150A true GB1330150A (en) | 1973-09-12 |
Family
ID=25354525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4986270A Expired GB1330150A (en) | 1969-10-27 | 1970-10-21 | Impeller assemblies for high vacuum pumps |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3659958A (en) |
| JP (1) | JPS5026770B1 (en) |
| BE (1) | BE757355A (en) |
| CA (1) | CA922676A (en) |
| CH (1) | CH535383A (en) |
| DE (1) | DE2046692A1 (en) |
| FR (1) | FR2066533A5 (en) |
| GB (1) | GB1330150A (en) |
| NL (1) | NL7015234A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2554995A1 (en) * | 1975-12-06 | 1977-06-16 | Pfeiffer Vakuumtechnik | TURBOMOLECULAR PUMP |
| JPS5482571U (en) * | 1977-11-24 | 1979-06-12 | ||
| GB2498816A (en) * | 2012-01-27 | 2013-07-31 | Edwards Ltd | Vacuum pump |
| DE102013100853A1 (en) * | 2013-01-29 | 2014-07-31 | Pfeiffer Vacuum Gmbh | Process for coating and / or painting magnet rings of a rotor magnetic bearing, rotor magnetic bearing and vacuum pump |
| DE102015117562A1 (en) * | 2014-10-16 | 2016-04-21 | Johnson Electric S.A. | gear pump |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1551402A (en) * | 1925-08-25 | Botob fob elastic-pi | ||
| US843237A (en) * | 1906-03-31 | 1907-02-05 | Frank D Shepherd | Steam-turbine. |
| DE287964C (en) * | 1913-05-31 | |||
| US2356605A (en) * | 1940-01-08 | 1944-08-22 | Meininghaus Ulrich | Turbine rotor |
| US2317092A (en) * | 1941-08-02 | 1943-04-20 | Allis Chalmers Mfg Co | Welded spindle construction |
| US2461242A (en) * | 1944-08-23 | 1949-02-08 | United Aircraft Corp | Rotor construction for turbines |
| US2440933A (en) * | 1945-05-11 | 1948-05-04 | Elliott Co | Turbine rotor |
| US2637521A (en) * | 1949-03-01 | 1953-05-05 | Elliott Co | Gas turbine rotor and method of welding rotor disks together |
| US3070348A (en) * | 1960-07-25 | 1962-12-25 | Gen Motors Corp | Composite rotor |
| FR1304689A (en) * | 1961-08-04 | 1962-09-28 | Snecma | Advanced Turbomolecular Vacuum Pump |
| US3399827A (en) * | 1967-05-19 | 1968-09-03 | Everett H. Schwartzman | Vacuum pump system |
-
0
- BE BE757355D patent/BE757355A/en not_active IP Right Cessation
-
1969
- 1969-10-27 US US869968A patent/US3659958A/en not_active Expired - Lifetime
-
1970
- 1970-09-22 DE DE19702046692 patent/DE2046692A1/en active Pending
- 1970-10-16 NL NL7015234A patent/NL7015234A/xx unknown
- 1970-10-16 CH CH1532970A patent/CH535383A/en not_active IP Right Cessation
- 1970-10-21 GB GB4986270A patent/GB1330150A/en not_active Expired
- 1970-10-23 JP JP45092864A patent/JPS5026770B1/ja active Pending
- 1970-10-26 FR FR7038540A patent/FR2066533A5/fr not_active Expired
- 1970-10-27 CA CA096678A patent/CA922676A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH535383A (en) | 1973-03-31 |
| BE757355A (en) | 1971-03-16 |
| DE2046692A1 (en) | 1971-05-06 |
| US3659958A (en) | 1972-05-02 |
| FR2066533A5 (en) | 1971-08-06 |
| CA922676A (en) | 1973-03-13 |
| JPS5026770B1 (en) | 1975-09-03 |
| NL7015234A (en) | 1971-04-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |