G - Physics – 01 – F
Patent
G - Physics
01
F
G01F 23/30 (2006.01) B28C 5/22 (2006.01) B28C 7/00 (2006.01) E04G 21/04 (2006.01) G01F 23/58 (2006.01)
Patent
CA 2487008
A device indicates the level of concrete within the hopper of a concrete pump and prevents accidental overflow and spills. The concrete level indicator device includes an elongate post with an enlarged 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 o~ 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 alcove 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.
Fetherstonhaugh & Co.
Moran Stephen M.
LandOfFree
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