Polar transfer switch |
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| 申请号 | US34956064 | 申请日 | 1964-03-05 | 公开(公告)号 | US3277414A | 公开(公告)日 | 1966-10-04 |
| 申请人 | BELL TELEPHONE LABOR INC; | 发明人 | PICCININNI JACK A; | ||||
| 摘要 | |||||||
| 权利要求 | 1. THE COMBINATIONN COMPRISING: A CORE MADE OF A MATERIAL HAVING A COERCIVE FORCE IN THE ORDER OF 50 OERSTEDS; A COIL WOUND ON SAID CORE; A FIRST BAR-TYPE PERMANENT MAGNETIC DISPOSED IN PARALLEL WITH SAID CORE; A SEALED CONTACT REED SWTICH DISPOSED IN PARALLEL BETWEEN SAID CORE AND SAID FIRST PERMANENT MAGNET; A SECOND PERMANENT MAGNET DISPOSED IN PARALLEL WITH SAID CORE AND WITH ITS MAGNETIC POLARITY REVERSED WITH RESPECT TO THE POLARITY OF SAID FIRST PERMANENT MAGNET; AND ANOTHER SEALED CONTACT REED SWITCH DISPOSED IN PARALLEL BETWEEN SAID SECOND PERMANENT MAGNET AND SAID CORE. |
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| 说明书全文 | |||||||
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