Patent ID: 6105938
Filing Date: 2000-08-22
Classification: B66D

Abstract:
An elevation system for lifting and supporting agricultural or floricultural products or containers at a desired elevation above the ground for growing, processing, or storage, the system being adapted for use in an agricultural or floricultural structure having an overhead frame structure, comprising:a spool shaft;a drive assembly operable from a location below the spool shaft, wherein the drive assembly selectively rotates the spool shaft about the longitudinal axis of the spool shaft in both a first direction and a second direction;a plurality of first lines having a first end and a second end, the first ends of the lines being secured to the spool shaft at spaced-apart locations along the length of the spool shaft, the lines being wound around the spool shaft when the spool shaft is rotated in the first direction, the lines being unwound around the spool shaft when the spool shaft is rotated in the second direction; anda first hanger rod being secured to the second ends of the lines to suspend from the spool shaft, the first hanger rod being raised when the lines are wound around the spool shaft, the first hanger rod being lowered when the lines are unwound around the spool shaft.