| 摘要 |
An insulated digging tool, such as a shovel, with a metal head comprising a digging portion and a socket extending from the digging portion to a socket mouth. An electrically insulating shaft 13 extends from a tip end 14 to a handle end 15, the tip end being received within the socket. The shaft has at least one flow channel 16 in its outer surface extending from inside the socket to outside the socket towards the handle end. An overmould collar extends around the outside of the socket remote from the socket mouth and an electrically insulating overmould extends around the socket and shaft. The overmould extends from the overmould collar, over the outside of the collar and the shaft towards the handle end sufficiently far to cover the at least one flow channel. The overmould further extends into the flow channel and into the socket such that it fills the socket. Also disclosed is a method of manufacturing said digging tool which involves injecting an electrically insulating material along the flow channels so that the socket is filled. |
