Patent ID: 7882870

Claim:
A portable supporting frame for a cutting machine, comprising: a leg frame comprising two pairs of supporting legs each of which comprises a pair of first and second crossed legs pivotally and crossly connected together; a tabletop frame comprising two table arms pivotally connected to top ends of said first crossed legs respectively, wherein said tabletop frame is adapted to pivotally fold between a set up position for supporting said cutting machine at said tabletop frame and a folded position to form a compact portable unit; and a frame locker comprising two locker joints provided at top ends of said second crossed legs and two locking members arranged in such a manner that when said second crossed legs are pivotally folded at a setup position, said locker joints are coupled with said first and second table arms respectively, such that said locking members are engaged with said locker joints respectively to lock up said second crossed legs with said first and second table arms respectively, so as to retain said leg frame at said set up position, wherein each of said locker joints, having a U-shaped cross section, comprises two parallel locker walls and two locker holes provided thereon respectively, wherein a distance between said two locker walls is slightly larger than a thickness of each of said first and second table arms, such that said locker joints forms two arm seats to receive said respective first and second table arms respectively so as to supportively retain said first and second table arms between said two locker walls.