BE442623A - - Google Patents
Info
- Publication number
- BE442623A BE442623A BE442623DA BE442623A BE 442623 A BE442623 A BE 442623A BE 442623D A BE442623D A BE 442623DA BE 442623 A BE442623 A BE 442623A
- Authority
- BE
- Belgium
Links
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
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 (forum.php) |
Family
ID=25760752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE442623D BE442623A (forum.php) | 1939-12-13 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE442623A (forum.php) |
| CH (2) | CH218203A (forum.php) |
| FR (1) | FR890647A (forum.php) |
| GB (1) | GB575854A (forum.php) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2761935A (en) * | 1952-07-30 | 1956-09-04 | David C Prince | Circuit breaker |
| DE1069737B (forum.php) * | 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 |
| FR890647A (fr) | 1944-02-14 |
| GB575854A (en) | 1946-03-07 |
| CH218203A (de) | 1941-11-30 |