Suspension work platform hoist system
AssigneeSky Climber, LLC
InventorsGeorge M. Anasis, Robert E. Eddy, Gary E. Ingram, Jean-Francois DeSmedt, Hui Li
Life of this patent
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Abstract
A suspension work platform hoist system for raising and lowering a work platform is provided. The system incorporates at least one hoist attached to the work platform and in electrical communication with a hoist control system having a monitoring and diagnostic system to monitor and record at least one of a plurality of operating characteristics of the hoist. The hoist control system may further include a safety lock out system that requires authentication of an operator prior to the hoist control system causing movement of the hoist system.
Claims20
A hoist system (10) for raising and lowering a work platform (100) on a rope (400), comprising:
- a hoist (200) having a motor (210) and a traction mechanism (220) designed to cooperate with the rope (400), wherein the hoist (200) is releasably attached to the work platform (100);
- and
- a hoist control system (700) in electrical communication with the motor (210), wherein the hoist control system (700) has a monitoring and diagnostic system (750) that identifies and records each occurrence of an overspeed test, wherein the hoist control system (700) records each occurrence of an overspeed test and prevents operation of the hoist (200) if an overspeed test has not been performed within an overspeed time interval.
A hoist system (10) for raising and lowering a work platform (100) on a rope (400), comprising:
- a hoist (200) having a motor (210) and a traction mechanism (220) designed to cooperate with the rope (400), wherein the hoist (200) is releasably attached to the work platform (100);
- and
- a hoist control system (700) in electrical communication with the motor (210), wherein the hoist control system (700) further includes a monitoring and diagnostic system (750) that (i) automatically runs at least one test prior to allowing the hoist (200) to move the work platform (100) and (ii) records each occurrence of an overspeed test and prevents operation of the hoist (200) if the latest overspeed test is not within an overspeed time interval.
A hoist system (10) for raising and lowering a work platform (100) on a rope (400), comprising:
- a hoist (200) having a motor (210) and a traction mechanism (220) designed to cooperate with the rope (400), wherein the hoist (200) is releasably attached to the work platform (100);
- and
- a hoist control system (700) in electrical communication with the motor (210), wherein the hoist control system (700) has a monitoring and diagnostic system (750) that identifies and records each occurrence of an overspeed test, wherein the monitoring and diagnostic system (750) prevents operation of the hoist (200) if an overspeed test has not been performed within an overspeed time interval, and the monitoring and diagnostic system (750) monitors and records at least one characteristic of the hoist (200) at a predetermined sampling period, wherein the at least one characteristic is selected from the group of hoist operating hours, input voltage, current draw, and motor temperature.
Dependencies are inferred from the claim text.