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A motorized wheelchair, powerchair, electric wheelchair, or electric-powered wheelchair (EPW) is a wheelchair that is propelled by means of an electric motor (usually using differential steering) rather than manual power. Motorized wheelchairs are useful for those unable to propel a manual wheelchair or who may need to use a wheelchair for ...
Power add-ons hook onto the frame of rigid or folding manual wheelchairs and propel rear wheelchair wheels with special motorized rollers. The device is controlled by a joystick while maintaining the chair’s manoeuvrability. By releasing a clutch, the user can choose when to switch between assisted power or manual use.
According to the National Household Travel Survey (NHTS), nearly 10 million working age Americans (18 to 64) reported having disabilities, with 8.8% regularly using a motorized wheelchair or scooter.
While power chair users are able to ingress and egress effortlessly because of the powered wheelchair, wheel slipping is a severe safety issue and so ramp angle is critical. Most kneel systems are very simplistic in design as a stainless steel cable pinches the frame to the rear axle creating a lower angle for entry and exit.
The addition of geared, all-mechanical wheels for manual wheelchairs is a new development incorporating a hypocycloidal reduction gear into the wheel design. The 2-gear wheels can be added to a manual wheelchair. The geared wheels provide a user with additional assistance by providing leverage through gearing (like a bicycle, not a motor).
In its Standard Mode, it has two of the drive wheels plus the caster wheels on the ground, and functions as a conventional rear-wheel-drive powered wheelchair. [ 1 ] Additional modes include Balance Mode, which raises a user to eye-level height by balancing on two drive wheels, and Stair Mode, which enables a trained user to ascend and descend ...