BE469888A - - Google Patents
Info
- Publication number
- BE469888A BE469888A BE469888DA BE469888A BE 469888 A BE469888 A BE 469888A BE 469888D A BE469888D A BE 469888DA BE 469888 A BE469888 A BE 469888A
- Authority
- BE
- Belgium
Links
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H67/00—Electrically-operated selector switches
- H01H67/02—Multi-position wiper switches
- H01H67/14—Multi-position wiper switches having wipers movable in two mutually perpendicular directions for purpose of selection
- H01H67/16—Multi-position wiper switches having wipers movable in two mutually perpendicular directions for purpose of selection one motion being rotary and the other being parallel to the axis of rotation, e.g. Strowger or "up and around" switches
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H51/00—Electromagnetic relays
- H01H51/02—Non-polarised relays
- H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
- H01H51/06—Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity
- H01H51/08—Contacts alternately opened and closed by successive cycles of energisation and de-energisation of the electromagnet, e.g. by use of a ratchet
- H01H51/082—Contacts alternately opened and closed by successive cycles of energisation and de-energisation of the electromagnet, e.g. by use of a ratchet using rotating ratchet mechanism
- H01H51/086—Contacts alternately opened and closed by successive cycles of energisation and de-energisation of the electromagnet, e.g. by use of a ratchet using rotating ratchet mechanism with radial ratchet elements
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Relay Circuits (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US302517A US2277191A (en) | 1939-11-02 | 1939-11-02 | Combined line and cutoff relay for telephone systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE469888A true BE469888A (fi) |
Family
ID=23168071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE469888D BE469888A (fi) | 1939-11-02 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2277191A (fi) |
| BE (1) | BE469888A (fi) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB600423A (en) * | 1945-10-05 | 1948-04-08 | Siemens Brothers & Co Ltd | Improvements relating to automatic telephone systems |
| US2969433A (en) * | 1947-09-10 | 1961-01-24 | Vigren Sten Daniel | Crossbar switches |
| US2714629A (en) * | 1951-05-19 | 1955-08-02 | Nederlanden Staat | Marking circuit |
| US3156777A (en) * | 1959-07-13 | 1964-11-10 | Itt | Balanced lockout line circuit |
| US3482056A (en) * | 1966-11-22 | 1969-12-02 | Northern Electric Co | Identification of a subscriber's request for service |
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0
- BE BE469888D patent/BE469888A/xx unknown
-
1939
- 1939-11-02 US US302517A patent/US2277191A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2277191A (en) | 1942-03-24 |