Patent ID: 7814839

Claim:
A conveyor system for carrying a load along a generally horizontally extending conveying path comprising: a drive shaft extending along the conveying path and mounted for rotation about a shaft axis, at least one trolley above said drive shaft and adapted to support a load, and having a plurality of driven wheels engaging said drive shaft and mounted for rotation about a corresponding plurality of driven wheel axes non-parallel and non-perpendicular to said shaft axis, load rail structure above said drive shaft, extending generally parallel thereto and presenting elongated, upper and lower running surfaces, said trolley having upper load wheels thereon running on said upper running surface, lower load wheels running on said lower running surface, upper and lower parts carrying said upper and lower load wheels respectively, and a resilient element connected with said parts and yieldably biasing said upper load wheels into running contact with said upper running surface, and a product support carried by said trolley above said drive shaft for bearing transported products, each of said upper and lower parts being elongated, extending longitudinally along the conveying path and having a transverse, inverted U-shaped configuration, there being a plurality of said resilient elements connected with said parts for yieldably biasing said upper load wheels into running contact with said upper running surface.