Stairlift

Details Stairlift Stairlift

2006-05-30

2006-05-30

Brahan, Thomas J. (Department: 3652)

Elevator, industrial lift truck, or stationary lift for vehicle

Stairway assist for individual or minor barrier lift for...

Mounted adjacent stairway for travel parallel thereto

Reexamination Certificate

active

07051841

ABSTRACT:
There is described a stairlift (1), comprising: a carriage (3) displaceable along a bent path, and a chair (5) carried by said carriage (3) and mounted on said carriage (3) for tilting about a horizontal axis of rotation (11); a horizontal-keeping mechanism (100) for keeping the chair (5) upright, comprising: an angle sensor (110) providing a signal (S(θ)) indicative of the instantaneous value of an angle of rotation (θ) between the chair (5) and the carriage (3); an orientation sensor (130) associated with the carriage (3) and providing a signal indicative of variations in the position (φ) of the carriage (3); and an absolute-orientation sensor (140) associated with the chair (5), providing a signal (S(ψ) representative of the instantaneous value of the position (ψ) of the chair (5). The control members (101, 102) control said angle of rotation (θ) on the basis of the signals (S(φ), S(ψ) received.

REFERENCES:
patent: 5720364 (1998-02-01), Glover
patent: 2 301 811 (1996-12-01), None
patent: WO 95/18763 (1995-07-01), None
patent: WO 95/29867 (1995-11-01), None
patent: 98/37007 (1998-08-01), None
patent: 99/46198 (1999-09-01), None

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