06357992 is referenced by 13 patents and cites 2 patents.

An apparatus for moving an object, such as a wheelchair, between an upper position and a lower position. The upper position is typically adjacent to the floor surface of a vehicle while the lower position is typically at ground level. The apparatus preferably includes a platform including at least three pivotally connected sections. The sections are selectively moveable between an unfolded orientation in which the sections are substantially co-planar and a folded orientation in which the sections form a compact configuration. The apparatus also preferably includes a folding assembly for selectively moving the sections of the platform between the folded orientation and the unfolded orientation, a deployment assembly for selectively deploying and stowing the platform and a lift assembly for selectively moving the platform vertically between the upper position and the lower position. The platform includes a control assembly with at least one switch for controlling the movement phases of the platform, where a switch must be activated for each subsequent movement phase.

Title
Collapsible, powered platform for lifting wheelchair
Application Number
9/228634
Publication Number
6357992 (B1)
Application Date
January 11, 1999
Publication Date
March 19, 2002
Inventor
James B Welte
Sunberg
MN, US
Lynn O Ringdahl
Alexandria
MN, US
Agent
Woodard Emhardt Naughton Moriarty & McNett
US
Assignee
Braun Crow River
IN, US
IPC
B60P 1/44
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