| 摘要 |
1506979 Plug A BERNER 17 Dec 1976 [23 Dec 1975] 52767/76 Heading F2H An expansible plastics plug comprises an expanding member 1 provided with wedge faces 23 which is connected to neck portion 3 by webs 2 which are capable of buckling, and expansible arms 8 having faces 11 adapted to co-operate with the wedge faces of the expanding member. |
