Patent ID: 7574806

Claim:
Garden shears having first and second blades crossly joined to one another by a rotating button, and a pair of identical adjustment structures, each adjustment structure comprising: an inner tube fixing a respective one of said blades thereto, a trough longitudinally disposed on an outer surface of said inner tube, a plurality of grooves formed longitudinally along said trough, a cavity formed through said trough, a stopper extending perpendicularly through said cavity into an interior of said inner tube, an outer tube having a first end receiving said inner tube to telescope therein, a grab handle fixing a second end of said outer tube therein, an aligning member fixing said outer tube first end therein at a location where said outer tube and inner tube are joined, a through hole extending through said aligning member, a protruding section of a protruding block fitting perpendicularly through said through hole, an alignment board pivotably connected to said aligning member by a pin, said alignment board having a pressing portion and a curved portion, whereby the inner and outer tubes can be precisely positioned when an end surface of the outer tube first end is visually aligned with a numbered marking of a marked measuring line on said outer surface of said inner tube and the pressing portion is pressed downward to force said curved portion against said protruding block causing a secondary grooved section of said protruding section to lockingly clamp against said grooves of said trough.