FR743261A - - Google Patents
Info
- Publication number
- FR743261A FR743261A FR743261DA FR743261A FR 743261 A FR743261 A FR 743261A FR 743261D A FR743261D A FR 743261DA FR 743261 A FR743261 A FR 743261A
- Authority
- FR
- France
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F9/00—Devices preventing sparking of machines or apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D49/00—Machines or devices for sawing with straight reciprocating saw blades, e.g. hacksaws
- B23D49/007—Jig saws, i.e. machine saws with a vertically reciprocating narrow saw blade chucked at both ends for contour cutting
- B23D49/008—Jig saws, i.e. machine saws with a vertically reciprocating narrow saw blade chucked at both ends for contour cutting hand-driven or foot-driven
-
- 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
- H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
- H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
- H01H33/92—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism the arc-extinguishing fluid being liquid, e.g. oil
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Circuit Breakers (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
- Gas-Insulated Switchgears (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1992109X | 1931-11-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR743261A true FR743261A (da) | 1933-03-25 |
Family
ID=10895493
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR743261D Expired FR743261A (da) | 1931-11-18 | ||
| FR768027D Expired FR768027A (fr) | 1931-11-18 | 1934-01-19 | Perfectionnements aux interrupteurs électriques |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR768027D Expired FR768027A (fr) | 1931-11-18 | 1934-01-19 | Perfectionnements aux interrupteurs électriques |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US1992109A (da) |
| BE (2) | BE391064A (da) |
| DE (2) | DE621297C (da) |
| FR (2) | FR768027A (da) |
| GB (3) | GB392930A (da) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2422569A (en) * | 1943-05-28 | 1947-06-17 | Westinghouse Electric Corp | Circuit interrupter |
| US2467788A (en) * | 1944-07-20 | 1949-04-19 | Westinghouse Electric Corp | Circuit interrupter |
| DE1142650B (de) * | 1957-06-03 | 1963-01-24 | Elettromeccaniche Scarpa & Mag | Tulpenkontakt, insbesondere fuer Loeschkammerschalter |
| US3894204A (en) * | 1974-02-19 | 1975-07-08 | Ite Imperial Corp | 38KV low current fused switch |
| DE102013205945A1 (de) * | 2013-04-04 | 2014-10-09 | Siemens Aktiengesellschaft | Trennschalteinrichtung |
| EP3776616B1 (en) * | 2018-03-28 | 2023-02-15 | Hitachi Energy Switzerland AG | Spring loaded auxiliary contact system for bus transfer switching in a center break switch |
-
0
- BE BE401277D patent/BE401277A/xx unknown
- BE BE391064D patent/BE391064A/xx unknown
- FR FR743261D patent/FR743261A/fr not_active Expired
-
1931
- 1931-11-18 GB GB4859/33A patent/GB392930A/en not_active Expired
- 1931-11-18 GB GB32025/31A patent/GB392926A/en not_active Expired
-
1932
- 1932-09-07 US US632073A patent/US1992109A/en not_active Expired - Lifetime
- 1932-09-20 DE DEW89921D patent/DE621297C/de not_active Expired
-
1933
- 1933-02-07 GB GB3771/33A patent/GB412673A/en not_active Expired
-
1934
- 1934-01-19 FR FR768027D patent/FR768027A/fr not_active Expired
- 1934-02-01 DE DEW93563D patent/DE658260C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB392930A (en) | 1933-05-18 |
| BE391064A (da) | |
| GB392926A (en) | 1933-05-18 |
| DE658260C (de) | 1938-03-25 |
| GB412673A (en) | 1934-07-05 |
| DE621297C (de) | 1935-11-05 |
| FR768027A (fr) | 1934-07-30 |
| US1992109A (en) | 1935-02-19 |
| BE401277A (da) |