Mobile concrete ceiling mold platform

Claim 1

Mobile concrete ceiling mold apparatus comprising a wheeled frame (R; GW); a mold support platform (ST) on the frame; vertically extendable means (HS) supporting the platform on the frame and movable between an extended position and a collapsed position; a separable, wheeled drive dolly (AF), selectively connectable to and disconnectable from the wheeled frame (R; GW); a single pressure fluid power source (AA) including a prime mover (Ma) and an energy source therefor and fluid compressor pump (P) located on the dolly; pressure fluid actuated means (Z) acting on the extendable means (HS) to extend the same and fluid interconnection lines interconnecting the pressure fluid actuated means (Z) and the fluid compressor pump (P) to raise the platform by hydraulic pressure upon application of pressure fluid from the compressor pump; a pressure fluid actuated drive motor (FM) directly connected to at least one of the wheels of the drive dolly, and fluid connection lines connecting the fluid compressor pump (P) to the pressure fluid drive motor (FM) to move the driven dolly with, or without the frame under power derived from the pressure fluid; and control means (S, St, C) selectively establishing fluid communication between the power source (AA), the fluid actuated means (Z), and the drive motor (FM) to provide motive power for the dolly (R, GW) to move the dolly with, or without the frame and, selectively, provide pressure fluid to the fluid actuated means (Z) to extend the position of the platform.