Stairlift levelling arrangement
First Claim
1. A stairlift comprising a carriage for movement along a fixed rail, a seat pivotally mounted to the carriage, an electric motor for turning the seat relative to its carriage, an electronic memory programmed with data representing the desired angle between the seat and the carriage at different positions of the carriage along the rail and electronic control means responsive to the position of the carriage along its rail and to the data stored in the electronic memory, to control the electric motor so as to maintain the seat substantially level.
2 Assignments
0 Petitions
Accused Products
Abstract
A stairlift comprises a carriage for movement along a fixed rail the angle of inclination of which varies along its length. A seat is pivotally mounted to the carriage and an actuating device is used for turning the seat relative to the carriage. A control device of the stairlift responds to the position of the carriage along its rail and the stored data representing the desired angle between the seat and carriage at different positions along the rail, to control the actuating device so as to maintain the seat substantially level as the carriage moves along the rail.
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Citations
7 Claims
- 1. A stairlift comprising a carriage for movement along a fixed rail, a seat pivotally mounted to the carriage, an electric motor for turning the seat relative to its carriage, an electronic memory programmed with data representing the desired angle between the seat and the carriage at different positions of the carriage along the rail and electronic control means responsive to the position of the carriage along its rail and to the data stored in the electronic memory, to control the electric motor so as to maintain the seat substantially level.
Specification