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Apparatus and method for removing concrete from interior surfaces of a concrete mixing drum

  • US 6,418,948 B1
  • Filed: 10/30/1998
  • Issued: 07/16/2002
  • Est. Priority Date: 10/30/1998
  • Status: Expired due to Fees
First Claim
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1. Apparatus for removing concrete from interior surfaces of a concrete mixing drum including an open end, the surfaces including at least one helical interior surface facing away from the open end, the apparatus comprising:

  • an elongate probe having a longitudinal axis and an axially extending forward end portion adapted for insertion into the drum through the open end thereof;

    adjustable support structure supporting the probe and positionable at an external location relative to the drum for positioning the probe at a variable elevation and a variable angular orientation relative to horizontal for insertion into the drum, the support structure supporting a guideway support, the guideway support including at least one bearing adapted for supporting the probe for movement of the forward end portion thereof into and out of the drum through the open end thereof, at least one fluid nozzle mounted to the probe in position for discharging a stream of fluid against the at least one helical interior surface facing away from the open end under sufficient pressure to dislodge accumulated concrete therefrom; and

    a fluid conduit connected to the nozzle for communicating the nozzle with a source of the fluid under pressure.

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