| 摘要 |
An improved feedout mechanism for the cutting head of a rotary trimmer includes curved surfaces on the top of the lower row of the cam tangs which replace the original flat surfaces of the lower row of cam tangs in the prior art cutting head. Also, the lower surface of each follower tang also has a curved surface which is changed from the original flat design in the prior art. The curved surfaces of the follower tangs and the cam tangs facilitate the line advancement operation and prevents the follower tangs from being hung up with the cam tangs.
|
