Patent ID: 7036649

Claim:
An auto-bill-dispensing machine comprising: a bill receiver comprising an upper chassis and a lower chassis, wherein between said upper chassis and lower chassis forms a bill passage, a frontal flange on each side of said upper chassis forms a positioning element and a plurality of blocking grooves is positioned at a central region of said lower chassis; and a security device positioned axially within the bill receiver, wherein said security device comprises a base, wherein said base is movable in between the two sides of said upper chassis and said positioning element, and a plurality of security hooks is pivotally disposed on an axle at a bottom flange of said base, wherein an upper end portion of said base comprises a weight block such that said security hooks block said bill passage due to said weight block under gravitational force and allow a banknote to pass through said bill passage in a first direction when a edge of said banknote pushes against said security hooks and after said banknote completely passes said security hooks, said security hooks block said banknote from being pulled out in a second direction opposite to said first direction.