Wheelchair lift with linkage assembly and hinged connection join

Details Wheelchair lift with linkage assembly and hinged connection join Wheelchair lift with linkage assembly and hinged connection join

1998-06-09

2000-08-01

Werner, Frank E.

Material or article handling

Self-loading or unloading vehicles

Loading or unloading by other carrier or mover means, and...

414540, 414541, 414921, 187222, 14 711, B60P 146

Patent

active

RE0368059

ABSTRACT:
A linkage assembly (20) for use with a platform or step lift (22) for transmitting force from a linear actuator (228) to a ramp (40) pivotally attached to the outer edge of the platform (26) of the lift so as to cause the ramp to travel through a rotational path of at least 180 degrees. The linkage assembly is designed so that no portion thereof extends more than about 0.25 inch above the upper surface (28) of the ramp and the top surface (48) of the platform, and so that the ramp is driven downwardly toward the extended position with a force insufficient to cause serious injury to a person's feet positioned in the path of travel of the ramp. Additionally, a hinge structure (700) is provided for use with a step lift for coupling the platform with its vertical extensions (66, 68) so as to permit the latter to pivot relative to the platform as the extensions move up and down within the vertical guides (80, 82) in which the vertical extensions are slidably received.

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2-page drawings of Hogan Design, "Ramp/Barrier Linkage Layouts", Doc. No. 94-007-01.

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