| 摘要 |
PCT No. PCT/SU80/00155 Sec. 371 Date Sep. 24, 1981 Sec. 102(e) Date Sep. 24, 1981 PCT Filed Sep. 1, 1980 PCT Pub. No. WO81/02141 PCT Pub. Date Aug. 6, 1981.A spring is constructed as a resilient U-shaped piece comprising a middle portion and leg portions disposed in the same plane, the leg portions including a bearing for taking an external load. The bearings are disposed on the leg portions in such a manner that a line passing through the centers of the bearings is parallel to the middle portion.
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