| 摘要 |
919,648. Electromagnetic switches. CRABTREE & CO. Ltd., J. A. March 2, 1961 [March 10, 1960], No. 8429/60. Class 38 (5). The armature, moving contact carrier assembly 29, 28, 28a of a relay is biased by spring 45 against a detachable member 3 carrying fixed contacts 41 and which cam be replaced by a member held by the same spring clips 44 and affording the same or corresponding load on the armature return springs 45 with a different contact arrangement, i.e. all contacts normally open. |
