Patents Assigned to Natural Earth Technologies, Inc.
  • Patent number: 5409166
    Abstract: A portable electric-powered particulate spreader has a housing having an inlet and an outlet. A reservoir for holding particulate material is located above the housing. A blower is located with a flow path extending from the inlet to the outlet for inducing air flow along the flow path. A particulate intake port is formed in a channel wall which encompasses an exhaust channel extending downstream from the blower to the outlet. A valve controls flow of particulate material from the reservoir to the particulate intake port. An agitator located between the reservoir and exhaust channel rotationally reciprocates and induces vibrations which assist the flow of particulate material. A foil in the exhaust channel produces a low static pressure in the which tends to draw particulate material from the reservoir into the air flow. Delays are built in so that the blower turns on before opening the valve is opened and the valve is closed before the blower is turned off.
    Type: Grant
    Filed: June 2, 1993
    Date of Patent: April 25, 1995
    Assignee: Natural Earth Technologies, Inc.
    Inventors: Rudolph M. Gunzel, Jr., Donald J. Shanklin, Darcy E. Staggs, Roy K. Fujitaki