DE29720541U1 - Schraubenspindel-Gaspumpe - Google Patents
Schraubenspindel-GaspumpeInfo
- Publication number
- DE29720541U1 DE29720541U1 DE29720541U DE29720541U DE29720541U1 DE 29720541 U1 DE29720541 U1 DE 29720541U1 DE 29720541 U DE29720541 U DE 29720541U DE 29720541 U DE29720541 U DE 29720541U DE 29720541 U1 DE29720541 U1 DE 29720541U1
- Authority
- DE
- Germany
- Prior art keywords
- gas pump
- screw gas
- screw
- pump
- gas
- 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 - Lifetime
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
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/082—Details specially related to intermeshing engagement type pumps
- F04C18/084—Toothed wheels
-
- 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
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29720541U DE29720541U1 (de) | 1997-11-19 | 1997-11-19 | Schraubenspindel-Gaspumpe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29720541U DE29720541U1 (de) | 1997-11-19 | 1997-11-19 | Schraubenspindel-Gaspumpe |
Publications (1)
Publication Number | Publication Date |
---|---|
DE29720541U1 true DE29720541U1 (de) | 1999-03-18 |
Family
ID=8048851
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE29720541U Expired - Lifetime DE29720541U1 (de) | 1997-11-19 | 1997-11-19 | Schraubenspindel-Gaspumpe |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE29720541U1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19941787A1 (de) * | 1999-09-02 | 2001-03-08 | Leybold Vakuum Gmbh | Schraubenvakuumpumpe mit Schraubengängen mit sich verändernder Steigung |
EP1130263A2 (de) * | 2000-02-23 | 2001-09-05 | The BOC Group plc | Schrägverzahnte Vakuumpumpe |
EP1421282A1 (de) * | 2001-08-27 | 2004-05-26 | Arthur Vanmoor | Verdrängerpumpe mit gegendruckverhinderung |
ITUA20162325A1 (it) * | 2016-04-05 | 2017-10-05 | Antonio Chessa | Una pompa volumetrica a doppia vite |
-
1997
- 1997-11-19 DE DE29720541U patent/DE29720541U1/de not_active Expired - Lifetime
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19941787A1 (de) * | 1999-09-02 | 2001-03-08 | Leybold Vakuum Gmbh | Schraubenvakuumpumpe mit Schraubengängen mit sich verändernder Steigung |
WO2001018399A1 (de) | 1999-09-02 | 2001-03-15 | Leybold Vakuum Gmbh | Schraubenvakuumpumpe mit schraubengängen mit sich verändernder steigung |
DE19941787B4 (de) * | 1999-09-02 | 2011-06-16 | Leybold Vakuum Gmbh | Schraubenvakuumpumpe mit Schraubengängen mit sich verändernder Steigung |
EP1130263A2 (de) * | 2000-02-23 | 2001-09-05 | The BOC Group plc | Schrägverzahnte Vakuumpumpe |
EP1130263A3 (de) * | 2000-02-23 | 2002-07-24 | The BOC Group plc | Schrägverzahnte Vakuumpumpe |
EP1421282A1 (de) * | 2001-08-27 | 2004-05-26 | Arthur Vanmoor | Verdrängerpumpe mit gegendruckverhinderung |
EP1421282A4 (de) * | 2001-08-27 | 2005-03-09 | Arthur Vanmoor | Verdrängerpumpe mit gegendruckverhinderung |
ITUA20162325A1 (it) * | 2016-04-05 | 2017-10-05 | Antonio Chessa | Una pompa volumetrica a doppia vite |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R207 | Utility model specification |
Effective date: 19990429 |
|
R150 | Term of protection extended to 6 years |
Effective date: 20010216 |
|
R151 | Term of protection extended to 8 years |
Effective date: 20040330 |
|
R152 | Term of protection extended to 10 years |
Effective date: 20060201 |
|
R071 | Expiry of right |