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US 5,039,226 AGranted
Portable concrete mixer
OwnerGilles Lavoieinventor
Life of this patent
Estimating the term…
Abstract
A trailer for transporting and mixing concrete or similar products, comprising a wheeled frame and a mixing drum mounted to the wheeled frame for rotation in a first direction for mixing concrete and in a second direction for discharging concrete from the drum. A unidirectional driving connection is provided between a wheel of the frame and the mixing drum for rotating the drum in the concrete mixing direction as a result of movement of the wheeled frame. An electric motor is also provided on the frame for rotating the drum in the concrete discharging direction.
Claims4
A trailer for transporting and mixing concrete or similar products, comprising:
- wheeled frame;
- a mixing drum mounted to said wheeled frame for rotation in a first direction for mixing concrete and in a second direction for discharging concrete from said drum;
- a unidirectional driving connection between a wheel of said frame and said mixing drum to cause rotation of said mixing drum solely in said first direction as a result of movement of said wheeled frame;
- and
- selectively actuatable driving means on said frame in operative relationship with said mixing drum for rotating said mixing drum in said second direction.
2 more elements
Dependencies are inferred from the claim text.