Threshold warning system for wheelchair lifts

Details Threshold warning system for wheelchair lifts Threshold warning system for wheelchair lifts

1998-05-15

2000-03-28

Swann, Glen

Communications: electrical

Condition responsive indicating system

Specific condition

340522, 340541, 340556, 3405731, 3406861, G08B 2100

Patent

active

060437413

ABSTRACT:
A threshold warning system is installed directly on a conventional lift to fully comply with the SAE standard No. J2093. The threshold warning system comprises a sensor device for sensing whether there is an object crossing the boundary of the threshold zone, and a platform position indication device for determining whether the platform is in an unsafe position. The threshold warning system comprises an audible and/or visual warning device for warning a wheelchair user or a passenger when the user or passenger moves into a threshold zone from the vehicle opening while the platform is in an unsafe level for exiting from or boarding into the vehicle.

REFERENCES:
patent: 4010458 (1977-03-01), Kopfli
patent: 5625340 (1997-04-01), Gustavsson
patent: 5838238 (1998-11-01), Abita et al.
patent: 5933082 (1999-08-01), Abita et al.

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