Cmi Limited

Larry G Eben

Ewald R Ulmer

Jerry Chaon

A concrete vibrator apparatus is described for use in conjunction with a concrete finishing machine that is movable longitudinally along a roadway. The finishing machine includes a finishing unit engageable with the surface of the concrete and movable transversely across the roadway, a supporting frame mounted to and extending forwardly and outwardly from the movable finishing unit, and a vibrator assembly mounted to the supporting frame. The vibrator assembly includes first and second vibrator units, with each of the vibrator units being independently movable between a downwardly position wherein the vibrator unit extends into and below the surface of the concrete and an upwardly position wherein the vibrator unit is out of contact with the surface of the roadway. A control mechanism is described for controlling the selective movement of the vibrator units and the rate of vibration of the vibrator units.

Concrete vibrating machine

A pan drag device is disclosed for attachment to a concrete finishing machine movable longitudinally along an elongated body of poured concrete, with the finishing machine having a finishing unit engageable with the surface of the poured concrete and movable transversely across the body of concrete to grade the concrete. The pan drag device includes support members mounted to and extending rearwardly from the finishing unit and movable with the finishing unit and pan drag apparatus mounted to the support members for engaging the graded concrete surface to finish and seal the concrete surface. The pan drag device further includes a hydraulically actuated piston and cylinder member for raising and lowering the pan drag apparatus with respect to the concrete surface and apparatus for controlling the hydraulically actuated piston and cylinder member for raising and lowering the pan drag apparatus between an upward raised position to a downward engaging position to permit the pan drag apparatus to engage the graded concrete surface to seal and finish the concrete surface.

Growing community of inventors

Canton, SD, United States of America

Larry G Eben