| 摘要 |
A coupler device includes a barrel, a sleeve having an outer thread for engaging with an inner thread of the barrel and for securing the sleeve to the barrel, the sleeve includes an inner peripheral surface having a spatial pattern, and a tubular member includes one end engaged into the sleeve and forced against the sleeve to have the spatial pattern of the sleeve to be transferred onto the tubular member and to form a corresponding spatial pattern on the tubular member, and to have the sleeve to be secured to the tubular member with the spatial patterns of the sleeve and the tubular member. The sleeve may be made of stronger materials for solidly coupling to the barrel.
|
