NL203405A - - Google Patents
Info
- Publication number
- NL203405A NL203405A NL203405DA NL203405A NL 203405 A NL203405 A NL 203405A NL 203405D A NL203405D A NL 203405DA NL 203405 A NL203405 A NL 203405A
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/06—Contacts characterised by the shape or structure of the contact-making surface, e.g. grooved
- H01H1/08—Contacts characterised by the shape or structure of the contact-making surface, e.g. grooved wetted with mercury
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H29/00—Switches having at least one liquid contact
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H51/00—Electromagnetic relays
- H01H51/28—Relays having both armature and contacts within a sealed casing outside which the operating coil is located, e.g. contact carried by a magnetic leaf spring or reed
- H01H51/287—Details of the shape of the contact springs
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Contacts (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US489046A US2837612A (en) | 1955-02-18 | 1955-02-18 | Mercury switches |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL203405A true NL203405A (US07816562-20101019-C00012.png) | 1900-01-01 |
Family
ID=23942191
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL203405D NL203405A (US07816562-20101019-C00012.png) | 1955-02-18 | ||
| NL203405A NL102373C (US07816562-20101019-C00012.png) | 1955-02-18 | 1956-01-05 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL203405A NL102373C (US07816562-20101019-C00012.png) | 1955-02-18 | 1956-01-05 |
Country Status (7)
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3033965A (en) * | 1962-05-08 | Chatter-free sealed-in contacts | ||
| GB2166594B (en) * | 1984-11-07 | 1988-06-08 | Stc Plc | High sensitivity miniature electro-magnetic relay |
| US4804932A (en) * | 1986-08-22 | 1989-02-14 | Nec Corporation | Mercury wetted contact switch |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE247686C (US07816562-20101019-C00012.png) * | ||||
| US1289637A (en) * | 1915-03-29 | 1918-12-31 | William M Bruce Jr | Telegraph apparatus. |
| US1240306A (en) * | 1915-10-23 | 1917-09-18 | United Telegraph & Cable Company | Telegraphy. |
| US2242636A (en) * | 1936-10-30 | 1941-05-20 | Edison Inc Thomas A | Electric switch |
| DE684355C (de) * | 1937-07-08 | 1939-11-27 | Walter Baertsch | Elektrischer Schalter mit Quecksilberkontakten |
| US2257900A (en) * | 1937-12-01 | 1941-10-07 | Honeywell Regulator Co | Tube switch |
| BE475679A (US07816562-20101019-C00012.png) * | 1940-07-11 | |||
| US2288811A (en) * | 1941-05-13 | 1942-07-07 | Bell Telephone Labor Inc | Switching device |
| GB576861A (en) * | 1944-05-15 | 1946-04-24 | Electro Methods Ltd | Improvements in or relating to electro-magnetic relays |
| US2445406A (en) * | 1944-07-21 | 1948-07-20 | Bell Telephone Labor Inc | Circuit maker and breaker |
| US2483723A (en) * | 1945-04-03 | 1949-10-04 | Bell Telephone Labor Inc | Electromagnetic circuit maker and breaker |
| US2524340A (en) * | 1945-07-13 | 1950-10-03 | Jessie R Bolin | Mercury switch for control compasses |
-
0
- NL NL203405D patent/NL203405A/xx unknown
-
1955
- 1955-02-18 US US489046A patent/US2837612A/en not_active Expired - Lifetime
- 1955-10-05 FR FR1137591D patent/FR1137591A/fr not_active Expired
- 1955-12-31 CH CH340278D patent/CH340278A/de unknown
-
1956
- 1956-01-05 NL NL203405A patent/NL102373C/nl active
- 1956-01-17 DE DEW18246A patent/DE1044975B/de active Pending
- 1956-02-17 BE BE545323A patent/BE545323A/fr unknown
- 1956-02-17 GB GB5012/56A patent/GB790958A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH340278A (de) | 1959-08-15 |
| NL102373C (US07816562-20101019-C00012.png) | 1962-09-17 |
| DE1044975B (de) | 1958-11-27 |
| GB790958A (en) | 1958-02-19 |
| US2837612A (en) | 1958-06-03 |
| FR1137591A (fr) | 1957-05-31 |
| BE545323A (US07816562-20101019-C00012.png) | 1956-03-15 |
