Adjustable height liquid level management tools and systems
OwnerKeith R. Haslem, Fred L. Bartlettinventors
Life of this patent
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Abstract
A lift mechanism positioned on a tank containing potentially explosive gases, corrosive material and/or poisonous material with the motor of the mechanism on top of the lift and more than five feet away from any vent or opening of the tank and one or more devices inside the tank being moved and positioned by the lift mechanism.
Claims7
Apparatus for positioning one or more devices in a tank containing potentially explosive gases, corrosive material and/or poisonous material comprising a lift mechanism located outside the tank, a motor, a housing supporting the motor, a lead screw supported in the housing and extending vertically in the housing, means for coupling the top of the lead screw to the motor, a lead nut positioned to travel vertically in the housing when the lead screw turns, a hollow tube coupled to the bottom of the lead screw nut and extending into the tank to carry one or more devices inside the tank and an encoder for monitoring the rotation of the shaft of the motor.
Dependencies are inferred from the claim text.