| 摘要 |
FIELD: travelling accessories. SUBSTANCE: opener is made in the form of ring defined by bringing together two coils of cylindrical spiral wire having semicircular section. One end of spiral is partially offset away from ring, bevelled and bent toward ring. Coupling is put onto ring to facilitate arrangement of opener in operative and inoperative position. EFFECT: simplified construction, reduced dimensions and weight and enhanced reliability in operation. 2 dwgi |
