| 摘要 |
A rotary disc cutter and a rotary impeller are disclosed as examples of devices which utilize a coupling arrangement forming a detent, for the cutte r knives of the disc cutter and the impeller tines of the rotary impeller, which acts , in response to centrifugal force during operation, to retain the knives and tines in radially extended positions. In the rotary disc cutter and one variant of the rotary impeller, respective holes in ends of the knives and tines are shaped to cooperate wit h a square section of respective fasteners so as to accomplish the detent action , while in a second variant of the rotary impeller, the detent action is due to the cooperation between respective fasteners and complementary shaped tine mount sections.</ SDOAB> |
