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Foldable platform wheelchair lift with safety barrier

  • US 5,401,135 A
  • Filed: 01/14/1994
  • Issued: 03/28/1995
  • Est. Priority Date: 01/14/1994
  • Status: Expired due to Term
First Claim
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1. A wheelchair lift device for raising or lowering a wheelchair into or from a vehicle, said wheelchair lift device comprising:

  • (a) a lift mechanism affixed to said vehicle, said lift mechanism having a pivotally movable frame, said frame having an elongate boot tube;

    (b) a retractable first platform section pivotally attached to said frame, said first platform section having a first access ledge;

    (c) a second platform section foldably attached to said first platform section, said second platform section having a stop for engaging said boot tube, said second platform section further having a second access ledge; and

    (d) a first barrier mechanism pivotally attached to said first platform section proximal to said first access ledge and a second barrier mechanism pivotally attached to said second platform section proximal to said second access ledge, each of said barrier mechanisms comprising;

    (i) a barrier plate having an aperture therethrough, said barrier plate pivotally attached to a pivot rod on said platform section, for positioning of said barrier plate above said first platform section, said barrier plate further having a rear surface, said rear surface having a brace;

    (ii) an activator flipper plate having an engagement edge having a roller, said activator flipper plate further having a barrier activator rod having a flipper tab extending outwardly therefrom, said barrier activator rod pivotally attached to said platform section, said flipper tab pivotally connected to said brace; and

    (iii) a torsion spring positioned along said pivot rod, said spring engaging between said barrier plate and said pivot rod, where pivotal movement of said activator flipper plate about said barrier activator rod toward said first platform section pivotally retracts said barrier plate about said pivot rod from a position above said platform section to a position in flush engagement to said platform section.

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