FR540731A - Improvements to electromagnetic relays - Google Patents
Improvements to electromagnetic relaysInfo
- Publication number
- FR540731A FR540731A FR540731DA FR540731A FR 540731 A FR540731 A FR 540731A FR 540731D A FR540731D A FR 540731DA FR 540731 A FR540731 A FR 540731A
- Authority
- FR
- France
- Prior art keywords
- electromagnetic relays
- relays
- electromagnetic
- 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
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
- H01H47/18—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for introducing delay in the operation of the relay
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US408673A US1681473A (en) | 1920-09-07 | 1920-09-07 | Electromagnetic relay |
Publications (1)
Publication Number | Publication Date |
---|---|
FR540731A true FR540731A (en) | 1922-07-17 |
Family
ID=23617266
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR540731D Expired FR540731A (en) | 1920-09-07 | 1921-09-07 | Improvements to electromagnetic relays |
Country Status (4)
Country | Link |
---|---|
US (1) | US1681473A (en) |
DE (1) | DE379121C (en) |
FR (1) | FR540731A (en) |
GB (1) | GB168844A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE968494C (en) * | 1943-12-07 | 1958-02-27 | Metzenauer & Jung G M B H | Contact for electrical switchgear |
US2558524A (en) * | 1946-10-04 | 1951-06-26 | North Electric Mfg Company | Relay construction |
BE479338A (en) * | 1947-01-04 | |||
US2834850A (en) * | 1954-02-12 | 1958-05-13 | Essex Wire Corp | Relay |
-
1920
- 1920-09-07 US US408673A patent/US1681473A/en not_active Expired - Lifetime
- 1920-12-29 GB GB36407/20A patent/GB168844A/en not_active Expired
-
1921
- 1921-01-21 DE DEA34769D patent/DE379121C/en not_active Expired
- 1921-09-07 FR FR540731D patent/FR540731A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB168844A (en) | 1922-03-29 |
DE379121C (en) | 1923-08-17 |
US1681473A (en) | 1928-08-21 |
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