Abstract

A removably mounted wheelchair lift device that can elevate the wheelchair and its user. The lift device has a novel lifting mechanism which has an upper plate, a lower plate, a knee plate, an upper interior link, an upper exterior link, a lower interior link, a lower exterior link and a transfer link. The various parts of the lifting mechanism are pivotally attached to one another in a manner which provides a linear and precise extension and retraction. Extension and retraction of the lifting mechanism is achieved by a rotary electric motor and gear drive which introduce a torque between adjacent parts of the lifting mechanism. The lifting mechanism maintains a parallel relationship between its top and bottom plates throughout its range of motion. The lift device may also be used in other applications where the level or angle of the equipment or surfaces being supported must remain constant regardless of height. Other applications may include, but are not limited to, supporting hospital beds, medical operation tables, manufacturing work stations, office work stations, pallet stand, and other warehouse and storage applications.

IPC Classes  ?

• A61G 3/06 - Transfer using ramps, lifts or the like
• B66F 9/02 - Stationary loaders or unloaders, e.g. for sacks

Abstract

A removably mounted wheelchair lift device that can elevate the wheelchair and its user. The lift device has a novel lifting mechanism which has an upper plate, a lower plate, a knee plate, an upper interior link, an upper exterior link, a lower interior link, a lower exterior link and a transfer link. The various parts of the lifting mechanism are pivotally attached to one another in a manner which provides a linear and precise extension and retraction. Extension and retraction of the lifting mechanism is achieved by a rotary electric motor and gear drive which introduce a torque between adjacent parts of the lifting mechanism. The lifting mechanism maintains a parallel relationship between its top and bottom plates throughout its range of motion. The lift device may also be used in other applications where the level or angle of the equipment or surfaces being supported must remain constant regardless of height. Other applications may include, but are not limited to, supporting hospital beds, medical operation tables, manufacturing work stations, office work stations, pallet stand, and other warehouse and storage applications.

IPC Classes  ?

• A61G 5/10 - Parts, details or accessories
• F16M 11/38 - Undercarriages with or without wheels changeable in height or length of legs, also for transport only by folding

Abstract

A removably mounted wheelchair lift device that can elevate the wheelchair and its user. The lift device has a novel lifting mechanism which has an upper plate, a lower plate, a knee plate, an upper interior link, an upper exterior link, a lower interior link, a lower exterior link and a transfer link. The various parts of the lifting mechanism are pivotally attached to one another in a manner which provides a linear and precise extension and retraction. Extension and retraction of the lifting mechanism is achieved by a rotary electric motor and gear drive which introduce a torque between adjacent parts of the lifting mechanism. The lifting mechanism maintains a parallel relationship between its top and bottom plates throughout its range of motion. The lift device may also be used in other applications where the level or angle of the equipment or surfaces being supported must remain constant regardless of height. Other applications may include, but are not limited to, supporting hospital beds, medical operation tables, manufacturing work stations, office work stations, pallet stand, and other warehouse and storage applications.

IPC Classes  ?

• A61G 3/06 - Transfer using ramps, lifts or the like
• B66F 9/02 - Stationary loaders or unloaders, e.g. for sacks