| 摘要 |
PCT No. PCT/IT97/00108 Sec. 371 Date Jul. 7, 1999 Sec. 102(e) Date Jul. 7, 1999 PCT Filed May 13, 1997 PCT Pub. No. WO97/45764 PCT Pub. Date Dec. 4, 1997A bi-elastic device for the elasticizing of ear-pieces for spectacles, comprising a small box that is combined with the ear-piece by spot-welding and pre-assembly. Inside the small box are housed at least two springs, each of the springs on one side having an end in abutment on the small box, and on the other side having the other end in abutment of an end of a tie-rod. The tie-rod is substantially "L" like and the springs are placed adjacent and parallel to the end of the tie-rod. The opposite end of the same tie-rod is external to the small box, and is hingeable to a corresponding small front face provided on a frame of the spectacles.
|
