Patent ID: 7788813

Claim:
A hand held cutter ( 11 ) having an auxiliary means ( 17 ) for guidance and having a cutting blade ( 14 ) to perform a cutting operation on an article, the auxiliary means comprising; first and second independent auxiliary wheels ( 9 ) and an interface means ( 17 ) mounted between said first and second independent auxiliary wheels ( 9 ), said interface means comprising; a first gear attached to the first auxiliary wheel, a second gear attached to the second auxiliary wheel, an internally toothed ring gear surrounding said first and second gears, an operator engagement mechanism to move the ring gear between a first position where it engages the first and second gears, and a second position where it does not engage the first and second gears, wherein, when in the first position, the two independent auxiliary wheels ( 9 ) rotate synchronously at the same speed in the same direction to generate a rectilinear path for the cutter, wherein, when in the second position, the first and second auxiliary wheels ( 9 ) can individually roll to generate a desired curved path for the cutter.