A multifunctional wheelchair contains: a body, a support plate, a lifting seat, and a shampoo basin. The body includes a retractable mounting, a chair back, at least one drive device, and two frames. The two frames have two main wheels, the two frames have two guide wheels, and the two armrests are arranged on a second drive device. A respective armrest has an abutting portion, and the retractable mounting have two racks. The support plate is detachably engaged on the retractable mounting of the body. The lifting seat is removably engaged on the retractable mounting of the body, and the lifting seat includes a saddle on a third drive device which is configured to drive the saddle to lift or descend adjustably. The shampoo basin is detachably connected on the chair back and included a washing chamber.

A conveyance to carry humans, such as a wheelchair, is described having levers on each side of the wheelchair that are manually moved forward and backward to propel the conveyance. The user is able to shift into forward, reverse or neutral, brake, and change mechanical advantage (gear ratio), all this without removing the user's hands from the drive levers.

A conveyance to carry humans, such as a wheelchair, is described having levers on each side of the wheelchair that are manually moved forward and backward to propel the conveyance. The user is able to shift into forward, reverse or neutral, brake, and change mechanical advantage (gear ratio), all this without removing the user's hands from the drive levers.

A device including a frame; an actuator attached to the frame and slidaby movable with respect to the frame along a linear axis, and a helical member positioned within the frame and rotatably movable with respect to the frame about a helical axis of the helical member, wherein the helical axis is parallel to the linear axis, wherein the actuator and the helical member are configured to cooperate with one another such that (a) motion of the actuator along the linear axis in a first linear direction causes corresponding rotation of the helical member about the helical axis in a first rotational direction and (b) motion of the actuator along the linear axis in a second linear direction that is opposite the first linear direction causes corresponding rotation of the helical member about the helical axis in a second rotational direction that is opposite the first rotational direction.

A mobile chair apparatus is described that comprises a drive assembly that preferably includes one or more moveable foot pedals, and drive wheels which rotate in response to rotation of the foot pedals by the mobile chair occupant, and a steering assembly which comprises two steering wheels and two armrests, wherein movement of just one armrest will translate into movement of both steering wheels, and wherein the drive assembly and the steering assembly concurrently enable the mobile chair occupant to propel and steer the mobile chair apparatus without assistance from another person.

A rack driven human powered vehicle utilizes a rack and pinion system to provide a more efficient method of propulsion. The rack and pinion system may take the linear momentum of at least one driving rack and may transfer it to rotational momentum for at least one freewheel sprocket which may turn the wheel providing momentum for the vehicle.

Systems and methods of wheelchair systems having a companion control mode are disclosed. The wheelchair system includes a companion and a wheelchair. The wheelchair includes one or more wheels, at least one actuator coupled to the one or more wheels, a processing device, and a non-transitory, processor-readable storage medium in communication with the processing device. The non-transitory, processor-readable storage medium includes one or more programming instructions that, when executed, cause the processing device to determine the companion, generate a companion profile based on the determined companion, determine a movement of the companion, and actuate the at least one actuator to drive the one or more wheels to follow the movement of the companion. The actuation of the at least one actuator to drive the one or more wheels to follow the movement of the companion is an autonomous control.

A standing training mobile device for carrying a patient to perform active-assisted upright locomotion is provided. The standing training mobile device includes a base, a mobile module, a lifting module, a control module, and a support module. The mobile module and the lifting module are disposed on the base. The control module is disposed on the lifting module and is coupled to the mobile module. The control module includes a manipulation platform and two control assemblies disposed on the manipulation platform for use of the patient. The support module includes a support frame, a first support assembly, a second support assembly, and a third support assembly. The first support assembly, the second support assembly, and the third support assembly are slidably disposed on the support frame respectively. The second support assembly is disposed between the first support assembly and the third support assembly.

A conveyance to carry humans, such as a wheelchair, is described having levers on each side of the wheelchair that are manually moved forward and backward to propel the conveyance. The user is able to shift into forward, reverse or neutral, brake, and change mechanical advantage (gear ratio), all this without removing the user's hands from the drive levers.

A rack driven human powered vehicle utilizes a rack and pinion system to provide a more efficient method of propulsion. The rack and pinion system may take the linear momentum of at least one driving rack and may transfer it to rotational momentum for at least one freewheel sprocket which may turn the wheel providing momentum for the vehicle.