FR775978A - Alternating current electric arc extinguishing process - Google Patents
Alternating current electric arc extinguishing processInfo
- Publication number
- FR775978A FR775978A FR775978DA FR775978A FR 775978 A FR775978 A FR 775978A FR 775978D A FR775978D A FR 775978DA FR 775978 A FR775978 A FR 775978A
- Authority
- FR
- France
- Prior art keywords
- alternating current
- electric arc
- arc extinguishing
- current electric
- extinguishing process
- 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
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
- H01H33/02—Details
- H01H33/59—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle
-
- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42C—MANUFACTURING OR TRIMMING HEAD COVERINGS, e.g. HATS
- A42C1/00—Manufacturing hats
- A42C1/08—Hat-finishing, e.g. polishing, ironing, smoothing, brushing, impregnating, stiffening, decorating
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
- Outer Garments And Coats (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2245337A GB479274A (en) | 1936-12-11 | 1936-12-11 | Improvements in hat blocking appliances |
Publications (1)
Publication Number | Publication Date |
---|---|
FR775978A true FR775978A (en) | 1935-01-11 |
Family
ID=10179595
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR775978D Expired FR775978A (en) | 1936-12-11 | 1934-07-04 | Alternating current electric arc extinguishing process |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE607167C (en) |
FR (1) | FR775978A (en) |
GB (1) | GB479274A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE963711C (en) * | 1937-07-18 | 1957-05-09 | Siemens Ag | Contact converter for heavy current |
DE943135C (en) * | 1950-07-15 | 1956-05-09 | Licentia Gmbh | Electrical switch with free air gap between two loeschheads and arc extinguishing by means of an extinguishing agent supplied under pressure |
-
1933
- 1933-07-08 DE DEA69952D patent/DE607167C/en not_active Expired
-
1934
- 1934-07-04 FR FR775978D patent/FR775978A/en not_active Expired
-
1936
- 1936-12-11 GB GB2245337A patent/GB479274A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE607167C (en) | 1934-12-18 |
GB479274A (en) | 1938-02-02 |
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