| 摘要 |
PCT No. PCT/JP90/00577 Sec. 371 Date Dec. 7, 1990 Sec. 102(e) Date Dec. 7, 1990 PCT Filed May 1, 1990 PCT Pub. No. WO90/13755 PCT Pub. Date Nov. 15, 1990.A damper disc having torsion springs in series in window holes formed in the input side plate and outlet plate, a support structure disposed between the torsion springs composed of a pair of spring receiving members rotatably linked by a hinge part, and a sub-torsion spring compressively disposed between the spring receiving members and hinged apart with an annular linkage element for preventing outward projection in a radial direction by centrifugal force.
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