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All wheel drive powered wheelchair
We developed "Patrafour" to make your life more comfortable, joyful and active.
"Patrafour" has been sold since Oct,2004 by Nissin Medical Industries Co.,LTD. in Japan.

Patrafour
PatrafourPatrafour
Development and Production

Kanto Auto Works,LTD
New Products Div
mail:click here

Details
Special front wheel : WESN®

We apply for a patent on "WESN® " *1Patrafour adopted a special wheel called WESN.
WESN doesn't steer when it makes a turn.
*1 WESN® This coined word means all directions (West-East-South-North).WESN is a registered trademark.



Motions of WES®N Motions of WESN
Case of going straight on.
=>Wheels drive back and forward. Cups don't rotate.
Case of turning on Patrafour's axis.
The axis will be between Rh and Lh rear wheels.
=>Cups rotate laterally when it grounds.
Case of making a turn.
=>Wheels drive to back and forward and cups rotate laterally.


All wheel drive system

Front wheels don't have driving motors.
Driving power transmitted from rear wheel to front wheel
by a simple belt system.


Characteristics of Patrafour's driving system Characteristics of Patrafour's driving system
Front wheel doesn't steer.
Patrafour can turn on it's axis.
The axis will be between Rh and Lh rear wheels.
We adopted this system for the first time in the world.


Specifications
Length 98 [ cm ]
Width 62.5 [ cm ]
Height 93 [ cm ]
Weight 100 [ kg ] (with batteries)
Turning radius 79 [ cm ]
Max speed 6 [ km/hr ]
Max Range 30 [ km ]
Battery charging time approx.12 [ hr ]
Safe climbing angle < 10 [ deg. ]
Safe climbing curb height < 8 [ cm ] (forward only)
Safe ditch stride range < 10 [ cm ]




Driving performance
  Movie of the Patrafour's driving preformance is now available
Body colors
  Color-type of the Patrafour is now available


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