| 摘要 |
<p>PCT No. PCT/JP79/00102 Sec. 371 Date Jan. 2, 1980 Sec. 102(e) Date Oct. 15, 1979 PCT Filed Apr. 23, 1979 PCT Pub. No. WO79/01016 PCT Pub. Date Nov. 29, 1979.A folding, bellows type, hose of synthetic resin includes a coil to from the chevrons thereof. The modulus of elasticity in bending of the synthetic resin hose wall is in the range of from 2.500 to 14.00 Kg/cm. The oblique portions of the hose wall is attached to the coil on one side thereof near a valley, and on the other side thereof near the crest of the chevron, throughout the whole length of hose.</p> |
