Patent ID: 6189395
Filing Date: 2001-02-20
Classification: H04N,Y10T

Abstract:
A scanner including a change gear transmission device, comprising a base, a driving shaft rotatable mounted in said base, a scanning module mounted to said base for displacement thereon responsive to rotation of said driving shaft and a transmission coupled to said driving shaft; said transmission including at least a motor, a first gear, a second gear and a third gear, said second gear and said third gear being axially and laterally spaced one from the other and linked with a driving means for mutual axial displacement, said second and third gears being connected to one end of said driving shaft by a linking means; said first gear being coaxially connected with said motor; said second gear and said third gear being selectively linearly moved solely in an axial direction by said driving means between a first position and a second position, said first gear being engaged with said second gear in said first position and said first gear being engaged with said third gear in said second position.