Patent ID: 7677861

Claim:
A machine for removing and installing concrete slats in a livestock building, comprising: an elongated, horizontally disposed frame having first and second ends and first and second sides; a first selectively reversible drive unit at said first end of said frame; a second selectively reversible drive unit at said second end of said frame; said first and second reversible drive units supporting said frame above a supporting surface; an upstanding pedestal rotatably mounted on said frame, about a vertical axis, between said first and second ends thereof; a boom arm assembly, having inner and outer ends, pivotally secured to said pedestal, about a horizontal axis; said outer end of said boom arm assembly adapted to support a slat therefrom; and a power source on said frame for powering at least some of said drive units, said pedestal and said boom arm assembly; a first elongated outrigger assembly having inner and outer ends; said inner end of said first outrigger assembly being pivotally secured, about a vertical axis, to said first side of said frame adjacent said first end of said frame; a second elongated outrigger assembly having inner and outer ends; said inner end of said second outrigger assembly being pivotally secured, about a vertical axis, to said first side of said frame adjacent said second end of said frame; a third elongated outrigger assembly having inner and outer ends; said inner end of said third outrigger assembly being pivotally secured, about a vertical axis, to said second side of said frame adjacent said first end of said frame; a fourth elongated outrigger assembly having inner and outer ends; said inner end of said fourth outrigger assembly being pivotally secured, about a vertical axis, to said second side of said frame adjacent said second end of said frame; each of said first, second, third and fourth outrigger assemblies being selectively pivotally movable with respect to said frame between operative and stowed positions; said first and second outrigger assemblies, when in their said stowed positions, being positioned closely adjacent said first side of said frame; said third and fourth outrigger assemblies, when in their said stowed positions, being positioned closely adjacent said second side of said frame; said outrigger assemblies, when in their said stowed positions, being substantially parallel to the longitudinal axis of said frame.