NL29387C - - Google Patents
Info
- Publication number
- NL29387C NL29387C NL29387DA NL29387C NL 29387 C NL29387 C NL 29387C NL 29387D A NL29387D A NL 29387DA NL 29387 C NL29387 C NL 29387C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R11/00—Transducers of moving-armature or moving-core type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H51/00—Electromagnetic relays
- H01H51/22—Polarised relays
- H01H51/2236—Polarised relays comprising pivotable armature, pivoting at extremity or bending point of armature
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Electromagnets (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB12160/28A GB315496A (en) | 1928-04-25 | 1928-04-25 | Improvements relating to relays and other electromagnetic instruments and machines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL29387C true NL29387C (en:Method) |
Family
ID=9999432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL29387D NL29387C (en:Method) | 1928-04-25 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US1826990A (en:Method) |
| DE (1) | DE607203C (en:Method) |
| FR (1) | FR672368A (en:Method) |
| GB (1) | GB315496A (en:Method) |
| NL (1) | NL29387C (en:Method) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2491098A (en) * | 1940-10-14 | 1949-12-13 | Gen Railway Signal Co | Polar biased relay |
| DE761496C (de) * | 1941-04-19 | 1954-10-04 | Johannes Bohmeyer | Elektrisches Nebenuhrwerk mit durch Stromstoesse wechselnder Polaritaet schrittweisefortschaltbarem Anker |
| US2716232A (en) * | 1950-10-25 | 1955-08-23 | Bell Telephone Labor Inc | Flux modulated ringer |
| BE520275A (en:Method) * | 1952-05-29 | |||
| BE538941A (en:Method) * | 1954-06-14 | |||
| GB793825A (en) * | 1955-11-08 | 1958-04-23 | Telephone Mfg Co Ltd | Improvements relating to polarised electromagnetic devices |
| US3058038A (en) * | 1959-11-20 | 1962-10-09 | Weston Hydraulics Ltd | Torque motor with null balance |
-
0
- NL NL29387D patent/NL29387C/xx active
-
1928
- 1928-04-25 GB GB12160/28A patent/GB315496A/en not_active Expired
-
1929
- 1929-03-30 FR FR672368D patent/FR672368A/fr not_active Expired
- 1929-04-04 US US352494A patent/US1826990A/en not_active Expired - Lifetime
- 1929-04-04 DE DEC42877D patent/DE607203C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US1826990A (en) | 1931-10-13 |
| DE607203C (de) | 1934-12-19 |
| FR672368A (fr) | 1929-12-27 |
| GB315496A (en) | 1929-07-18 |