| 摘要 |
The present invention concerns a bushing assembly (2) comprising terminal ears coupled to opposed end walls (2A) of the bushing assembly for heating the bushing tip plate and walls each of said terminal ears comprising an electrically conductive plate (1) comprising a first terminal edge (1D) coupled to a bushing first end wall (2A) and extending away from said first end wall to a second free terminal edge (1A) connectable to a source of power (5 6) said plate comprising a slot (3) comprising : (a) a first open end (3A) of width WA at the second free edge (1A) of the plate (b) an elongated portion (3 B) extending towards said first edge (1D) of gap width WB and (c) a second closed end (3C) separate from the first edge (1D) of the terminal ear and having a curved geometry; characterized in that the curvature 1/(2 R) at any point of the curved second end (3C) of the slot is less than the reciprocal 1/ W of the smallest gap width W of both slot first open end (3A) WA and elongated portion (3 B) W wherein R is the radius at any point of the curved second end (3C) |
