Vehicle entrance ramp
Patent 4759682 Issued on July 26, 1988. Estimated Expiration Date: 
May 6, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 6, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2573496 3858452 Vehicle entrance ramp Vehicle entrance ramp Patent #: 4685858 InventorAssigneeApplicationNo. 07/046402 filed on 05/06/1987US Classes:414/537, Skidway105/433, Lateral shifter105/449, Slidable14/71.1, Attached280/166, Shiftable414/522, Laterally movable rigid platform type414/921, HANDICAPPED PERSON HANDLING74/424.78, Nut disengageable from screw74/89.33, Carriage surrounded, guided, and primarily supported by member other than screw (e.g., linear guide, etc.)D34/32RampExaminersPrimary: Werner, Frank E.International ClassesA61G 3/06 (20060101)A61G 3/00 (20060101) B60R 3/00 (20060101) AbstractThe present invention relates to an extendible and retractable ramp device for a vehicle particularly concerned with the loading and unloading of handicapped person and which device particularly includes a power actuating mechanism disposed within the vehicle in such a way as to protect the mechanism from damage, provide a ramp structure conducive to non-interferring ingress and egress by handicapped passengers and to incorporate a disconnect device which permits the ramp to be extended or retracted manually in the event power actuating mechanism becomes inoperative.Field of SearchSkidwayWith haulage means (e.g., cable, etc.) Laterally movable rigid platform type HANDICAPPED PERSON HANDLING And carrier or mover includes means enabling additional movement having horizontal component Carrier or mover includes means enabling additional movement of a rectilinear nature in a direction other than vertical Carrier movable to storage position beneath vehicle | |
