Patent · US Active

Lift apparatus

US8807283B2 · kind B2 · utility

6Cited by

23References

13Claims

0Family size

Inventors

Dennis B. Shell · Webster, US
David Shell · San Marcos, US

Key dates

Filing date	Jan 8, 2010
Grant date	Aug 19, 2014
Priority date	—
Expiry date	Dec 23, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49947
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A lift apparatus configured to move a passenger platform of the lift apparatus between a first position and an elevated second position. A stairway of the example lift apparatus may be used as a stairway when the passenger platform is arranged in the first position. As the passenger platform is raised to the elevated second position, hinged steps of the stairway are transformed into a horizontal surface.

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