BE442623A - - Google Patents

Info

Publication number: BE442623A
Authority: BE; Belgium

Application number

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.)

1939-12-13

Publication of BE442623A publication Critical patent/BE442623A/xx

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/72—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber
- H01H33/74—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber wherein the break is in gas
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C1/00—Pretreatment of the finely-divided materials before digesting
- D21C1/04—Pretreatment of the finely-divided materials before digesting with acid reacting compounds
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C3/00—Pulping cellulose-containing materials
- D21C3/04—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C3/00—Pulping cellulose-containing materials
- D21C3/22—Other features of pulping processes
- D21C3/26—Multistage processes
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/16—Impedances connected with contacts
- H01H33/164—Impedances connected with contacts the impedance being inserted in the circuit by blowing the arc onto an auxiliary electrode

BE442623D 1939-12-13 BE442623A (enrdf_load_stackoverflow)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE218203X		1939-12-13
DE211040X		1940-10-21

Publications (1)

Publication Number	Publication Date
BE442623A true BE442623A (enrdf_load_stackoverflow)

Family

ID=25760752

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE442623D BE442623A (enrdf_load_stackoverflow)	1939-12-13

Country Status (4)

Country	Link
BE (1)	BE442623A (enrdf_load_stackoverflow)
CH (2)	CH218203A (enrdf_load_stackoverflow)
FR (1)	FR890647A (enrdf_load_stackoverflow)
GB (1)	GB575854A (enrdf_load_stackoverflow)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2761935A (en) *	1952-07-30	1956-09-04	David C Prince	Circuit breaker
DE1069737B (enrdf_load_stackoverflow) *	1952-12-23	1959-11-26
FR1183278A (fr) *	1957-11-05	1959-07-06	Merlin Gerin	Perfectionnements aux interrupteurs à soufflage magnétique
ZA766073B (en) *	1975-10-24	1977-09-28	D Econimidis	Production of pulp
FI63267B (fi) *	1980-12-08	1983-01-31	Ahlstroem Oy	Foerfarande foer framstaellning av specialcellulosa med hoegt alfatal genom flerstegskokning innefattande syrafoerhydrolys
US4436586A (en) *	1982-01-22	1984-03-13	Kamyr, Inc.	Method of producing kraft pulp using an acid prehydrolysis and pre-extraction

0
- BE BE442623D patent/BE442623A/xx unknown
1940
- 1940-12-05 CH CH218203D patent/CH218203A/de unknown
1941
- 1941-08-19 CH CH226031D patent/CH226031A/de unknown
1942
- 1942-10-07 FR FR890647D patent/FR890647A/fr not_active Expired
1944
- 1944-04-17 GB GB7034/44A patent/GB575854A/en not_active Expired

Also Published As

Publication number	Publication date
CH226031A (de)	1943-03-15
GB575854A (en)	1946-03-07
FR890647A (fr)	1944-02-14
CH218203A (de)	1941-11-30

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