Drive assistance device for a wheel chair and a wheel chair...

Details Drive assistance device for a wheel chair and a wheel chair... Drive assistance device for a wheel chair and a wheel chair...

2009-07-30

2010-11-23

Tran, Dalena (Department: 3664)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Vehicle subsystem or accessory control

C280S250100

Reexamination Certificate

active

07840327

ABSTRACT:
A drive assistance device for a wheel chair having a drive motor, a driving wheel, a sensor means which is designed such that a driving force manually induced into a driving wheel is detected, and a control unit, designed such that the drive motor is controlled to drive the driving wheel in accordance with a drive assistance degree depending on the driving force manually induced into the driving wheel, wherein the control unit comprises an anti-rollback operational mode in which it is adapted to control the drive motor such that an unintended rolling of the driving wheel is avoided. The invention also relates to a wheel chair having such a drive assistance device.

REFERENCES:
patent: 7316298 (2008-01-01), Yeager
patent: 7434824 (2008-10-01), Connors et al.
patent: 2004/0051272 (2004-03-01), Wong
patent: 2006/0096793 (2006-05-01), Akagi
patent: 0790049 (1997-08-01), None
patent: 0832632 (1998-04-01), None
patent: 0945113 (1999-09-01), None
patent: 1911427 (2008-04-01), None
patent: 11342159 (1999-12-01), None
patent: 2000-152425 (2000-05-01), None
patent: 2006-116186 (2004-10-01), None
patent: 2007018034 (2007-02-01), None
English Abstract of JP11342159.
English Abstract of EP0945113.
English Abstract of EP0790049.
English Abstract of EP0832632.

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