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US 8,596,416 B2Granted
Tool carrier
AssigneeSafeWorks, LLC
InventorsGregory Crew, John Haigh, Morgan Knickrehm
Life of this patent
Estimating the term…
Abstract
A system configured for lifting or lowering a tool carriage device via a ladder climbing structure is described. The tool carriage device may be adapted to enclose and transport a payload and include a fall arrest grab with an overspeed brake to stop an uncontrolled descent of the carriage device. The tool carriage device may include obstruction sensors to detect an obstruction along the path of the carriage device.
Claims19
A system configured to lift or lower a carriage device via a ladder climbing structure, comprising:
- a rigging movable in a substantially vertical direction;
- a carriage device configured to enclose and transport a payload and adapted to be lifted and lowered along at least one rail of the ladder climbing structure;
- an apparatus coupled to the rigging and adapted to translate rigging movement into an ascent or descent of the carriage device;
- a receiver operable to receive signals indicative of a change in state of the carriage device;
- a control mechanism coupled to a power source and communicatively coupled with the receiver to control power delivery to the rigging based on a detected change in state of the carriage device, and
- an input mechanism operable to receive a signal indicating whether the system is operating in a tool lifting mode or a personnel assist mode, wherein the system is configured to prevent operation to lift a person when the signal indicates that the system is operating in the tool lifting mode.
3 more elements
A system configured to lift or lower a load via a ladder climbing structure, comprising:
- a rigging movable in a substantially vertical direction;
- an apparatus coupled to the rigging, said apparatus adapted to translate rigging movement into an ascent or descent of the load;
- a sensor operable to detect a change in state of the load;
- an input mechanism operable to receive a signal indicating whether the load is a person or a carriage device, wherein the system is configured to prevent operation to lift a person when the signal indicates that the load is a carriage device;
- and
- a control mechanism coupled to a power source and in electrical communication with the sensor to control power delivery to the rigging based on a detected change in state of the load and on said signal, wherein the carriage device is configured to be lifted and lowered along at least one rail of the ladder climbing structure.
3 more elements
Dependencies are inferred from the claim text.