Electrical control system for stairway wheelchair lift
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United States of America Patent
Stats
-
Feb 27, 1990
Grant Date -
N/A
app pub date -
May 18, 1988
filing date -
May 18, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A stairway wheelchair lift includes a stationary motor drive unit, a mobile platform movable along a stairway and a user interface for receiving user-generated input commands. The mobile platform communicates with the motor drive unit through a continuously maintained broadbeam infrared communications link, while the motor drive unit communicates with the mobile platform through an intermittently established short range infrared link. The user interface communicates with the motor drive through a hard wired four conductor communicates link. The use of infrared communications links, together with the four conductor hard wired link, reduces overall system wiring, enhances ease of installation and improves overall system flexibility and economy. Microprocessor based micro-controllers, within the motor drive unit, the mobile platform and the user interface, permit system operation to be tailored in accordance with the operating constraints and requirements imposed by a particular stairway configuration.
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Family
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Cited Art Landscape
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