Patent ID: 6874303

Claim:
A grass trimmer comprising: a housing, a fixed cutter device secured to said housing, and including at least one stationary cutter blade extended out of said housing, a movable cutter device rotatably secured to said fixed cutter device with a pivot shaft and rotatable relative to said fixed cutter device in reciprocating action, said movable cutter device including at least one cutter blade extended out of said housing, and movable relative to said at least one stationary cutter blade of said fixed cutter device for conducting cutting operations, a rotary member rotatably attached to said housing and including an eccentric member extended therefrom and engageable with said movable cutter device, to cause said movable cutter device to move relative to said fixed cutter device in reciprocating action when said rotary member is rotated relative to said housing, a drive shank secured to said rotary member and rotated in concert with said rotary member and including a free end extended out of said housing, and a power tool including an engaging end attachable to said free end of said shank, to rotate and drive said rotary member relative to said housing, and to move said eccentric member relative to said movable cutter device, and to move said movable cutter device relative to said fixed cutter device in reciprocating action.