JPS52142217U - - Google Patents
Info
- Publication number
- JPS52142217U JPS52142217U JP4885177U JP4885177U JPS52142217U JP S52142217 U JPS52142217 U JP S52142217U JP 4885177 U JP4885177 U JP 4885177U JP 4885177 U JP4885177 U JP 4885177U JP S52142217 U JPS52142217 U JP S52142217U
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Rotary-Type Compressors (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US16802371A | 1971-08-02 | 1971-08-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS52142217U true JPS52142217U (en) | 1977-10-28 |
Family
ID=22609768
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7699372A Pending JPS4825206A (en) | 1971-08-02 | 1972-08-02 | |
| JP4885177U Pending JPS52142217U (en) | 1971-08-02 | 1977-04-18 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7699372A Pending JPS4825206A (en) | 1971-08-02 | 1972-08-02 |
Country Status (5)
| Country | Link |
|---|---|
| JP (2) | JPS4825206A (en) |
| DE (1) | DE2234405A1 (en) |
| FR (1) | FR2149781A5 (en) |
| GB (1) | GB1349218A (en) |
| SE (1) | SE385232B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01257784A (en) * | 1988-04-06 | 1989-10-13 | Hitachi Ltd | Oilless screw fluid machine |
| WO2021070548A1 (en) * | 2019-10-07 | 2021-04-15 | 株式会社日立産機システム | Screw compressor |
| WO2022202163A1 (en) * | 2021-03-23 | 2022-09-29 | 株式会社日立産機システム | Multi-stage screw compressor |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0166851B1 (en) * | 1984-04-11 | 1989-09-20 | Hitachi, Ltd. | Screw type vacuum pump |
| SE8803595L (en) * | 1988-10-11 | 1990-04-12 | Svenska Rotor Maskiner Ab | MACHINE CONTAINS A GAS MEDIUM |
| CA2174032A1 (en) * | 1995-04-13 | 1996-10-14 | Allan J. Prang | Dual pitch multiphase screw pump |
| JP2004346864A (en) * | 2003-05-23 | 2004-12-09 | Taiko Kikai Industries Co Ltd | Expansion engine for recovering waste heat |
| DE102006035782B4 (en) | 2006-08-01 | 2018-10-25 | Gea Refrigeration Germany Gmbh | Screw compressor for extremely high operating pressures |
| JP5542382B2 (en) * | 2009-07-27 | 2014-07-09 | 株式会社日立産機システム | Screw compressor |
| CN108350881B (en) * | 2015-10-30 | 2020-12-04 | 加德纳丹佛公司 | Composite screw rotor |
-
1972
- 1972-07-13 DE DE19722234405 patent/DE2234405A1/en active Pending
- 1972-07-18 GB GB3348572A patent/GB1349218A/en not_active Expired
- 1972-07-24 FR FR7226582A patent/FR2149781A5/fr not_active Expired
- 1972-08-01 SE SE1000372D patent/SE385232B/en unknown
- 1972-08-02 JP JP7699372A patent/JPS4825206A/ja active Pending
-
1977
- 1977-04-18 JP JP4885177U patent/JPS52142217U/ja active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01257784A (en) * | 1988-04-06 | 1989-10-13 | Hitachi Ltd | Oilless screw fluid machine |
| WO2021070548A1 (en) * | 2019-10-07 | 2021-04-15 | 株式会社日立産機システム | Screw compressor |
| JP2021060003A (en) * | 2019-10-07 | 2021-04-15 | 株式会社日立産機システム | Screw compressor |
| US11933300B2 (en) | 2019-10-07 | 2024-03-19 | Hitachi Industrial Equipment Systems Co., Ltd. | Screw compressor having a screw rotor whose pitch changes in an axial direction from a suction end surface toward a discharge end surface |
| WO2022202163A1 (en) * | 2021-03-23 | 2022-09-29 | 株式会社日立産機システム | Multi-stage screw compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| GB1349218A (en) | 1974-04-03 |
| FR2149781A5 (en) | 1973-03-30 |
| DE2234405A1 (en) | 1973-02-22 |
| JPS4825206A (en) | 1973-04-02 |
| SE385232B (en) | 1976-06-14 |