ROLLER TOP STACKER
A roller top stacker having a moveable lift comprising a boom assembly. The roller top stacker includes a roller top assembly mounted to the boom assembly and a drive system for raising roller top assembly between a raised and lowered position. The roller top assembly has a top surface comprising a pattern of openings through which rollerballs protrude when in a raised position and in a lowered position which the rollerballs do not protrude.
1 . A roller top stacker comprising:
a moveable lift comprising a boom assembly;
a roller top assembly mounted to the boom assembly;
a drive system for raising roller top assembly between a raised and lowered position;
the roller top assembly having a top surface comprising a pattern of openings through which rollerballs protrude when in a raised position and in a lowered position which the rollerballs do not protrude.
2 . A roller top stacker according to claim 1 wherein roller top assembly comprises a moveable assembly on which the rollerballs are mounted and which travels vertically between the raised and lowered positions, a sled that is moveable horizontally within a base.
3 . A roller top stacker according to claim 2 wherein the sled includes at least one ramp having an inclined portion and a horizontal portion and the moveable assembly comprises at least one wheel which engage with a respective ramp.
4 . A roller top stacker according to claim 3 further comprising a linear actuator for moving the moveable assembly horizontally with the base, the linear actuator being connected to the sled.
5 . A roller top stacker according to claim 4 wherein the top surface and the base form an enclosure for the sled and the moveable assembly.
6 . A roller top for a lift comprising:
a roller top assembly mounted to the boom assembly, the roller top assembly having a top surface comprising a pattern of openings through which rollerballs protrude when in a raised position and in a lowered position which the rollerballs do not protrude.
7 . A roller top stacker according to claim 6 wherein roller top assembly comprises a moveable assembly on which the rollerballs are mounted and which travels vertically between the raised and lowered positions, a sled that is moveable horizontally within a base.
8 . A roller top stacker according to claim 7 wherein the sled includes at least one ramp having an inclined portion and a horizontal portion and the moveable assembly comprises at least one wheel which engage with a respective ramp.
9 . A roller top stacker according to claim 8 further comprising a linear actuator for moving the moveable assembly horizontally with the base, the linear actuator being connected to the sled.
10 . A roller top stacker according to claim 9 wherein the top surface and the base form an enclosure for the sled and the moveable assembly.