GB1274787A - Improvements in and relating to positive displacement liquid-sealed vacuum pumps - Google Patents
Improvements in and relating to positive displacement liquid-sealed vacuum pumpsInfo
- Publication number
- GB1274787A GB1274787A GB00012/70D GB1001270D GB1274787A GB 1274787 A GB1274787 A GB 1274787A GB 00012/70 D GB00012/70 D GB 00012/70D GB 1001270 D GB1001270 D GB 1001270D GB 1274787 A GB1274787 A GB 1274787A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sealant
- sealed vacuum
- relating
- positive displacement
- vacuum pumps
- 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
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
- F04C27/02—Liquid sealing for high-vacuum pumps or for compressors
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F28/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a bond to sulfur or by a heterocyclic ring containing sulfur
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2220/00—Application
- F04C2220/50—Pumps with means for introducing gas under pressure for ballasting
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
1,274,787. Rotary vacuum pump. BALZERS PATENT-UND BETEILIGUNGS A.G. March 3, 1970 [March 31, 1969], No. 10012/70. Heading F1F. In a sliding-vane liquid-sealed vacuum pump for pumping vapour-containing gases, the upper part, at least, of the walls 7 of the sealant reservoir is heated by a jacket 10 of the sealant, which is heated by friction to prevent condensation of vapour on the walls and consequent mixing with the sealant. The sealant is passed via a pipe 11, which may be cooled, to the pump compression chamber. The jacket 10 may be supplemented by an electric heating coil 12.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19691916394 DE1916394A1 (en) | 1969-03-31 | 1969-03-31 | Vacuum pump designed as a positive displacement pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1274787A true GB1274787A (en) | 1972-05-17 |
Family
ID=5729864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB00012/70D Expired GB1274787A (en) | 1969-03-31 | 1970-03-03 | Improvements in and relating to positive displacement liquid-sealed vacuum pumps |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3644702A (en) |
| CH (1) | CH482118A (en) |
| DE (1) | DE1916394A1 (en) |
| FR (1) | FR2040010A5 (en) |
| GB (1) | GB1274787A (en) |
| NL (1) | NL138809B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4037524A1 (en) * | 1990-11-26 | 1992-05-27 | Leybold Ag | LEAK DETECTOR |
| DE19852092B4 (en) * | 1998-11-12 | 2014-01-02 | Eichenauer Heizelemente Gmbh & Co. Kg | Water pump for washing machines and dishwashers with integrated water heating |
| US6454127B1 (en) | 2000-08-17 | 2002-09-24 | Sheree Suomela | Self-contained liquid dispenser with heating means |
| DE102005008887A1 (en) * | 2005-02-26 | 2006-08-31 | Leybold Vacuum Gmbh | Single-shaft vacuum displacement pump has two pump stages each with pump rotor and drive motor supported by the shaft enclosed by a stator housing |
| US8011898B2 (en) * | 2007-09-17 | 2011-09-06 | John P. Courier | High pressure radial pump |
-
1969
- 1969-03-31 DE DE19691916394 patent/DE1916394A1/en active Pending
- 1969-04-21 CH CH628969A patent/CH482118A/en not_active IP Right Cessation
- 1969-05-27 NL NL696908043A patent/NL138809B/en unknown
-
1970
- 1970-03-03 GB GB00012/70D patent/GB1274787A/en not_active Expired
- 1970-03-26 FR FR7010854A patent/FR2040010A5/fr not_active Expired
- 1970-03-27 US US22580A patent/US3644702A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| NL138809B (en) | 1973-05-15 |
| NL6908043A (en) | 1970-10-02 |
| DE1916394A1 (en) | 1970-10-15 |
| CH482118A (en) | 1969-11-30 |
| DE1916394B2 (en) | 1975-04-03 |
| US3644702A (en) | 1972-02-22 |
| FR2040010A5 (en) | 1971-01-15 |
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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 |