CH579219A5 - - Google Patents

Info

Publication number: CH579219A5
Authority: CH; Switzerland

Application number

CH326074A

Original Assignee

Cit Alcatel

Priority date (The priority date 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 date listed.)

1973-03-21

Filing date

1974-03-08

Publication date

1976-08-31

1974-03-08 Application filed by Cit Alcatel filed Critical Cit Alcatel

1976-08-31 Publication of CH579219A5 publication Critical patent/CH579219A5/xx

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

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Non-Positive Displacement Air Blowers (AREA)
Applications Or Details Of Rotary Compressors (AREA)

CH326074A 1973-03-21 1974-03-08 CH579219A5 (en)

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
CH579219A5 true CH579219A5 (en)	1976-08-31

Family

ID=9116654

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CH326074A CH579219A5 (en)	1973-03-21	1974-03-08

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)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
NL8105614A (en) *	1981-12-14	1983-07-01	Ultra Centrifuge Nederland Nv	HIGH VACUUM MOLECULAR PUMP.
JPS6238899A (en) *	1985-08-14	1987-02-19	Osaka Shinku Kiki Seisakusho:Kk	Spiral groove type vacuum pump
US4708586A (en) *	1985-08-14	1987-11-24	Rikagaku Kenkyusho	Thread groove type vacuum pump
JPS6351195U (en) *	1986-09-20	1988-04-06
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)

* Cited by examiner, † Cited by third party
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 NL NL7403784A patent/NL7403784A/xx not_active Application Discontinuation
- 1974-03-20 SU SU742008772A patent/SU667162A3/en active
- 1974-03-21 US US453498A patent/US3912415A/en not_active Expired - Lifetime
- 1974-04-08 IT IT20962/74A patent/IT1014568B/en active

Also Published As

Publication number	Publication date
SU667162A3 (en)	1979-06-05
IT1014568B (en)	1977-04-30
JPS49128306A (en)	1974-12-09
FR2222886A5 (en)	1974-10-18
DE2411247A1 (en)	1974-09-26
GB1459933A (en)	1976-12-31
BE812288A (en)	1974-09-16
US3912415A (en)	1975-10-14
NL7403784A (en)	1974-09-24
DE2411247C2 (en)	1983-03-24

Legal Events

Date	Code	Title	Description
1992-11-30	PL	Patent ceased

Publication	Publication Date	Title
AR201758A1 (en)	1975-04-15
AU476761B2 (en)	1976-09-30
AU465372B2 (en)	1975-09-25
FR2224009A5 (en)	1974-10-25
AR201235Q (en)	1975-02-21
AR201231Q (en)	1975-02-21
AU474593B2 (en)	1976-07-29
AU474511B2 (en)	1976-07-22
AU474838B2 (en)	1976-08-05
AU465453B2 (en)	1975-09-25
AU465434B2 (en)	1975-09-25
AU450229B2 (en)	1974-07-04
AU476714B2 (en)	1976-09-30
FR2222886A5 (en)	1974-10-18
AR201229Q (en)	1975-02-21
AU472848B2 (en)	1976-06-03
AU476696B2 (en)	1976-09-30
AR199451A1 (en)	1974-08-30
AU477823B2 (en)	1975-06-19
AU461342B2 (en)	1975-05-22
AR201432A1 (en)	1975-03-14
AR200885A1 (en)	1974-12-27
AR200256A1 (en)	1974-10-31
AU447540B2 (en)	1974-03-25
AU476873B1 (en)	1975-01-09