| 摘要 |
<p>A compact trimmer (10) includes a board (12) with a sheet support surface (14) and a fixed cutting edge (20) mounted along one side of the surface. A guide rail (30) is mounted on the board substantially overlying the fixed cutting edge. A housing (34) is slidably engaged on the rail. A circular rotary cutting blade (36) is mounted on an axle (48) within the housing for rotational motion. The axle is oriented perpendicular to the guide rail, and a collar (54) mounted on the axle engages the guide rail, turning the axle and blade as the housing moves along the rail. A portion of the cutting blade is biased in overlapping engagement with the fixed cutting edge by a biasing assembly (60) located withing the housing. The biasing assembly uses a spring (72) and ball (78) housed in a cavity (68) formed in a hub (64), the ball overlying the spring within the cavity and partially extending therefrom to engage a housing sidewall (62).</p> |
