| 摘要 |
PCT No. PCT/DE84/00012 Sec. 371 Date Sep. 14, 1984 Sec. 102(e) Date Sep. 14, 1984 PCT Filed Jan. 16, 1984 PCT Pub. No. WO84/02811 PCT Pub. Date Jul. 19, 1984.The invention relates to a pendulum means with a symmetrical post carrying two fixed magnets, each of which faces a movable magnet. The two movable magnets are coupled together by a rocker, so that alternately one assumes the minimum distance and the other the maximum distance with respect to the facing fixed magnet. A diaphragm movable at right angles to the magnetic field is associated with the pair of magnets, so that it alternately blocks one field and frees the other. The rocker and linkage systems carrying the magnets and the locking device are coupled together by a weight, e.g. a ball movable downwards along the sloping surface of a rocker.
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