FR547094A - - Google Patents
Info
- Publication number
- FR547094A FR547094A FR547094DA FR547094A FR 547094 A FR547094 A FR 547094A FR 547094D A FR547094D A FR 547094DA FR 547094 A FR547094 A FR 547094A
- Authority
- FR
- France
- 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
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/16—Contacts characterised by the manner in which co-operating contacts engage by abutting by rolling; by wrapping; Roller or ball contacts
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- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S200/00—Electricity: circuit makers and breakers
- Y10S200/29—Ball
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US1412002TA |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR547094A true FR547094A (pm) | 1922-11-30 |
Family
ID=22494621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR547094D Expired FR547094A (pm) |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1412002A (pm) |
| FR (1) | FR547094A (pm) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2450256A (en) * | 1945-07-31 | 1948-09-28 | Trumbull Electric Mfg Co | Electric switch |
| US2753432A (en) * | 1952-04-17 | 1956-07-03 | Gen Motors Corp | Electrical apparatus |
| US2771530A (en) * | 1953-02-09 | 1956-11-20 | Louis P Trombetta | Circuit breaker |
| BE552342A (pm) * | 1955-11-23 | |||
| US2903530A (en) * | 1957-04-01 | 1959-09-08 | Mc Graw Edison Co | Manual tap changing switch |
| US3052763A (en) * | 1959-04-06 | 1962-09-04 | Otarion Listener Corp | Electric switches |
| US3652812A (en) * | 1970-09-28 | 1972-03-28 | Westinghouse Electric Corp | Tap changer switch with radial pressurized movable contact structure |
| US4031345A (en) * | 1974-12-18 | 1977-06-21 | Grayhill, Inc. | Miniature electrical switch |
| CA1124383A (en) * | 1977-07-22 | 1982-05-25 | John L. Weale | Vibration detector incorporating two or more seismic elements |
| US4496805A (en) * | 1983-09-09 | 1985-01-29 | Warco, Inc. | Transformer switch |
| US4527022A (en) * | 1984-04-10 | 1985-07-02 | Vazquez Frank B | Tap changer |
-
0
- FR FR547094D patent/FR547094A/fr not_active Expired
- US US1412002D patent/US1412002A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US1412002A (en) | 1922-04-04 |