Discharge chute for concrete mix
OwnerThomas E. Davisinventor
Life of this patent
Estimating the term…
Abstract
A conveying chute for freshly mixed concrete is made from a metal frame having a replaceable polyurethane liner. The liner is formed flat about a porous metal reinforcement and is held in a curved trough defining shape by the frame.
Claims8
A concrete delivery means comprising a mixing vehicle having a chute removably connected thereto for conveying freshly mixed concrete from said mixing vehicle, said chute including a plurality of sections removably assembled end to end, at least one of said sections having a rigid frame including at least two arcuate cross members adjacent opposite longitudinal ends thereof, a pair of longitudinal members extending between and connecting end portions of said cross members, a third longitudinal member extending between and connecting center portions of said cross member, a bendable sheet of polyurethane material supported on said frame and defining an upwardly open trough, and fastening means releasably securing said sheet to said frame and holding said sheet in a transversely curved configuration.
A chute for conveying freshly mixed concrete from a mixing vehicle, said chute including a rigid frame having a plurality of arcuate cross members and longitudinal members extending between said cross members, a bendable sheet of polyurethane material supported on said frame and defining an upwardly open trough, and fastening means releasably securing said sheet to said frame and holding said sheet in its transversely curved configuration, and wherein,
- said bendable sheet contains a plurality of variable thickness portions comprised of,
- a first impact area means operative to provide high wear resistance to concrete which is dropped on said first area,
- a second wear resistant area means operative to provide wear resistance to abrasion from concrete sliding down the chute, and
- a third reduced wear area means operative to provide wear resistance,
- said first area being of greater thickness than either said second or said third area, and
- said second area having a thickness greater than or approximately equal to said third area.
Dependencies are inferred from the claim text.