BE562975A - - Google Patents
Info
- Publication number
- BE562975A BE562975A BE562975DA BE562975A BE 562975 A BE562975 A BE 562975A BE 562975D A BE562975D A BE 562975DA BE 562975 A BE562975 A BE 562975A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
- H01H3/022—Emergency operating parts, e.g. for stop-switch in dangerous conditions
- H01H3/0226—Emergency operating parts, e.g. for stop-switch in dangerous conditions operated by a pull cord
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- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/02—Bases, casings, or covers
- H01H9/04—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
- H01H9/042—Explosion-proof cases
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Switch Cases, Indication, And Locking (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1129590X | 1957-03-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE562975A true BE562975A (en:Method) |
Family
ID=9636963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE562975D BE562975A (en:Method) | 1957-03-28 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE562975A (en:Method) |
| DE (1) | DE1129590B (en:Method) |
| FR (1) | FR1170373A (en:Method) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE867370C (de) * | 1951-06-26 | 1953-02-16 | Concordia Elek Zitaets Ag | Signaleinrichtung, insbesondere fuer den Bergbau |
| DE952963C (de) * | 1953-03-13 | 1956-11-22 | Concordia Elek Zitaets Ag | Signaleinrichtung fuer den Bergbau |
-
0
- BE BE562975D patent/BE562975A/xx unknown
-
1957
- 1957-03-28 FR FR1170373D patent/FR1170373A/fr not_active Expired
- 1957-12-07 DE DEH31850A patent/DE1129590B/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR1170373A (fr) | 1959-01-14 |
| DE1129590B (de) | 1962-05-17 |