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US 2003/0188922 A1Published application
Level sensor for an elevating platform assembly and elevating platform assembly incorporating the same
OwnerBenoit Duplessisinventor
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OwnerBenoit Duplessisinventor
Estimating the term…
An elevating platform assembly comprises a pair of laterally spaced, generally vertical masts and an elongated working platform extending generally horizontally between the masts. Hoist mechanisms act between the ends of the working platform the masts and are actuable to move the working platform along the masts to different elevations. At least one level sensor is provided on the working platform and detects when the working platform deviates from a generally horizontal orientation. At least one controller is responsive to the at least one level sensor and controls the hoist mechanisms to adjust movement of the working platform when the working platform deviates from the generally horizontal orientation thereby to return the working platform to the generally horizontal orientation.
An elevating platform assembly comprising:
An elevating platform assembly according to claim 16 wherein said at least one level sensor further includes stops to limit movement of said pendulum so that both of said proximity sensors remain exposed to said sensor plate when said working platform deviates from said generally horizontal orientation beyond said maximum threshold.
A level sensor to detect deviations of a surface from the horizontal comprising:
In an elevating platform assembly including a pair of spaced apart generally vertical masts, an elongated working platform extending generally horizontally between said masts and a hoist mechanism acting between each end of said working platform and a respective mast to move said working platform to different elevations, a method of controlling the hoist mechanisms comprising the steps of:
Dependencies are inferred from the claim text.