Multi-Stage Drywall Hydraulic Lift System
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United States of America Patent
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Issued Date -
Aug 7, 2008
app pub date -
Feb 7, 2007
filing date -
Feb 7, 2007
priority date (Note) -
Abandoned
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Abstract
A multi-stage drywall hydraulic lift system for efficiently lifting a drywall panel while providing increased precision in positioning of the drywall panel. The multi-stage drywall hydraulic lift system generally includes a telescoping drywall lifter, a hydraulic actuator connected to the telescoping drywall lifter to extend and retract the telescoping drywall lifter. A hydraulic pump is fluidly connected to the hydraulic actuator. A valve unit is fluidly positioned between the hydraulic pump and the hydraulic actuator to control the flow of fluid to the hydraulic actuator based upon a desired vertical lift velocity.
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