Patent · US Expired

Retractable access ramp

US6484344B1 · kind B1 · utility

32Cited by
27References
17Claims
0Family size

Inventor

Key dates

Filing dateAug 10, 2001
Grant dateNov 26, 2002
Priority date—
Expiry dateAug 10, 2021

Classification

  • Technology area (CPC E)Fixed Constructions
  • CPC primaryE04F2011/005
  • WIPO fieldMedical technology
  • WIPO sectorInstruments

Abstract

A retractable access ramp for improving the accessibility of a variety of commercial and other related structures. The retractable access ramp includes a housing that has a plurality of walls that define an interior space. The housing has an aperture through the housing. The aperture is for providing access to the interior space. The housing is adapted for being coupled to the steps such that a top wall of the housing is flush with a top surface of the steps. A base assembly is coupled in the interior space of the housing. The base assembly is selectively extendable from the housing. A ramp assembly is coupled to the base assembly. The ramp assembly is selectively extendable from the base assembly when the base assembly is extended from the housing. The ramp assembly is adapted for providing a smooth surface over the steps for wheeled vehicles.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.