| 摘要 |
<p>The auxiliary contact is placed permanently on the body (5) of the main contact (7), forming a projection in the neighbourhood of the aperture (9) into which the corresp. plug (11) is to be fitted. A substantially L-shaped limb (13) at right-angles to the axis has a lower section (17) accepting a complementary projecting element (21) at a suitable place on the body of the plug. Its upper section (25) carries the auxiliary electric contact lenses (27) and blades (29).</p> |
