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Mixer vehicle

  • US 9,873,209 B2
  • Filed: 03/27/2014
  • Issued: 01/23/2018
  • Est. Priority Date: 03/29/2013
  • Status: Expired due to Fees
First Claim
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1. A mixer vehicle, comprising:

  • a vehicle;

    a mixer drum mounted on the vehicle, the mixer drum being adapted to load uncured concrete;

    a driving device adapted to rotate the mixer drum;

    a loaded state detector adapted to detect whether the uncured concrete is loaded on the mixer drum or not; and

    a controller programmed to stop rotation of the mixer drum by the driving device when the vehicle is in a stop state and the loaded state detector detects that the uncured concrete is not loaded on the mixer drum, the mixer vehicle further comprising an engine for running the vehicle, wherein the driving device includes;

    a fluid-pressure pump configured to be driven by the engine; and

    a fluid-pressure motor configured to be operated by an operating fluid discharged from the fluid-pressure pump and to rotate the mixer drum, wherein the loaded state detector is a fluid-pressure detector adapted to detect a fluid pressure of the fluid-pressure pump or the fluid-pressure motor, wherein the controller is programmed to stop the rotation of the mixer drum by stopping an idling operation of the engine.

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