Stephen J Moran

US Patent:

6817242, Nov 16, 2004

Filed:

Nov 7, 2003

Appl. No.:

10/703254

Inventors:

Stephen M. Moran - Pompano Beach FL 33064

International Classification:

E01C 2302

US Classification:

73313, 73319, 404 88, 404100

Abstract:

A device indicates the level of concrete within the hopper of a concrete pump and prevent accidental overflow and spills. The concrete level indicator device includes an elongate post with an enlarge float fixed to the bottom end and a guide sleeve for allowing vertical telescoping movement of the post as the concrete level in this hopper changes. A retaining collar attaches to a screen in the hopper of the pump and surrounds the guide sleeve for limiting swinging movement of the post and guide sleeve, thereby maintaining the device in a vertical position within the hopper with the float resting on the concrete. As concrete is filled into the hopper, the post rises through the guide sleeve until a visual indicator (e. g. a red band) on the top end of the post is visibly exposed above the guide sleeve, thereby alerting the operator to interrupt the discharge of concrete being filled in the hopper until the concrete level drops and the visible indicator on the post is no longer visible.