Vehicle mounted particulate material spreader
OwnerDonald F. Nelsoninventor
Life of this patent
Estimating the term…
Abstract
A spreader to be mounted on a vehicle. The spreader has a main container to hold a particulate material and an outlet for a particulate material. The particulate material can be dispersed from the outlet and there is an electric motor adjacent the main body to drive the particulate material from the body. This electric motor has a drive shaft that extends to an outlet. There is a feeder, for example a screw conveyor, on the drive shaft to force the particulate material from the outlet when the shaft rotates. The spreader includes seals to prevent leaking of the particulate material from the body when the shaft is not rotating and also has the ability to warn when the level of particulate material in the main body is too low.
Claims6
A spreader to be mounted on a vehicle and comprising:
- a container to hold a particulate material and having an outlet for the particulate material;
- means to disperse the particulate material from the outlet;
- an electric motor adjacent the container;
- a drive shaft extending from the electric motor to the outlet;
- a screw conveyor on said drive shaft to force particulate material from the outlet when the shaft rotates, said screw conveyor comprising a plurality of inclined circular bodies mounted on the shaft, at least an upper circular body being less inclined then the remaining circular bodies to act as a seal for the outlet when the shaft does not rotate, said circular bodies having flexible peripheries to facilitate sealing;
- at least one flap extending from one circular body to act to seal said conveyor when said shaft does not rotate;
- and
- means to warn when the level of particulate material in the container is too low.
Dependencies are inferred from the claim text.