Back to results
US 2022/0259011 A1Published application
Improvements in or relating to stairlifts
OwnerAndreas Csaba Szentistvanyinventor
Life of this patent
Estimating the term…
Abstract
A compact screw drive stairlift has the drive screw retained in a cavity within the rail and engages drive transfer elements extending along an inner surface of the cavity. The combined configurations of the screw and the rail ensure that the stairlift carriage is retained on the rail.
Claims15
A stairlift comprising:
- a rail having a length direction;
- a carriage mounted on said rail for movement along said rail in said length direction;
- a chair or load carrier mounted on said carriage;
- and
- a drive mechanism comprising inter-engaging drive elements on said carriage and rail respectively configured and operable to drive said carriage along said rail;
- wherein said rail has an internal cavity extending along said length direction axis;
- an aperture extending along said rail providing access to said cavity, said carriage overlying part of said aperture and projecting through said aperture such that said drive elements are located entirely within said cavity.
4 more elements
Dependencies are inferred from the claim text.