Patent ID: 6155402
Filing Date: 2000-12-05
Classification: B62D

Abstract:
A conveyor system comprising:an infeed conveyor section, an outfeed conveyor section and a working conveyor section, said working conveyor section being positioned in between and in line with said infeed and outfeed conveyor sections,said working conveyor section comprising a base, a frame and means for movably securing said frame to said base between a lower position and a raised position,means on said working conveyor section for moving a work piece from said infeed conveyor section toward said outfeed conveyor section,at least one vertical bearing operatively disposed between said base and said frame, said vertical bearing permitting movement of said frame relative to said base between said lower and said raised positions while precluding horizontal movement of said frame relative to said base,wherein said means for moving said frame between said lower and raised positions comprisesa pair of drivers rotatably mounted about a substantially horizontal axis to said base, and so that the axes of said drivers are spaced apart and parallel to each other,a pair of elongated drive links, each drive link being associated with one driver and having one end pivotally connected to said frame and its other end pivotally connected to its associated driver at a position radially spaced from said driver axis,means for selectively synchronously pivoting said drivers between a first and second position, said first and second positions being angularly spaced substantially 180 degrees apart from each other, said pivoting means comprising a drive belt operatively connected with each driver and a controllable motor which longitudinally displaces said belt.