| 摘要 |
A centrally oriented circular land for engaging the cylindrical shroud of a freeze plug is disposed on one side of a disc. A partial spherical depression in the other side of the disc interconnects with a spherical member at one end of a driver which interconnection transmits a force applied by the driver through the disc to the freeze plug to seat the freeze plug irrespective of the angular orientation between the respective axis of the driver and the disc. |
