The wheelchair lift system for a vehicle comprises a lift platform 10 raised by a hydraulic actuator 20, a pump 24 supplying hydraulic fluid under pressure to the actuator 20, a drive 26 for the pump 24 that draws power from a battery 28. Power generated by the flow of hydraulic fluid from the actuator 20 as the platform 10 is lowered recharges the battery 28. The drive 26 may be an electric motor such as a brushless DC motor that generates electric power when the pump 24 is driven. The drive 26 may include an electric generator powered by the flow of fluid from the actuator 20 to supply the battery 28. The electric generator may be a dynamo 54 located in a pump bypass or return line 50 that accommodates fluid flow. The bypass line 50 may include an impeller 56 to drive the electric generator.
Wheelchair lifts
2019-07-31
Patent
Electronic Resource
English
IPC: | A61G TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS , Transport, persönliche Beförderungsmittel, oder Lagerung besonders ausgebildet für Kranke oder Behinderte / B60P Fahrzeuge zum Transport von Lasten oder zum Befördern, Tragen oder Aufnehmen besonderer Lasten oder Gegenstände , VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS / F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein |
Engineering Appraisal of Wheelchair Lifts
Online Contents | 1993
|Procedure for Reliability Analysis of Wheelchair Lifts
Online Contents | 1993
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