10 results about "Powered wheelchairs" patented technology

A new and improved powered chair is provided with an anti-pinch system which comprises an angular sensor mounted upon the footrest assembly for detecting angular movement of the footrest assembly, from a horizontal mode to a vertical mode, prior to the footrest assembly encountering a seat assembly of the chair, which would indicate that the footrest assembly has encountered a foreign object, whereby the angular sensor can emit a control signal so as to terminate / reverse movement of said footrest support assembly. Anti-pinch sensor strips can also be used in conjunction with the angular sensor.

The utility model discloses a telescopic rotary armrest of an electric wheelchair, which comprises an armrest body, an elliptical tube support and a telescopic rod, the telescopic rod is arranged in the elliptical tube support in a penetrating manner, one end of the telescopic rod is hinged with the armrest body, and the other end of the telescopic rod is hinged with the elliptical tube support. The armrest further comprises a locking assembly used for locking the armrest body and the oval tube support. According to the utility model, the handrail main body with the triangular structure is connected with the elliptical tube bracket, so that the bearing capacity of the handrail is ensured, the handrail main body is connected through the internal telescopic rod, the lifting and overturning functions of the handrail main body are provided, the structure is effectively simplified, the operation complexity is reduced, and the jamming condition is reduced; and the locking assembly is arranged, so that the overall structural bearing strength of the armrest is further improved, and the boundary operation experience of the user on armrest state switching is provided.

A system for controlling power assistance to a user-propelled wheelchair having wheels and at least one motor drivingly engaged to one or more driving wheel of the wheels, the system having: a controller having a processing unit and a non-transitory computer-readable medium operatively connected to the processing unit and having stored thereon instructions executable by the processing unit for: determining, based on signals received by the controller, a commanded state of operation of the wheelchair desired by the user of the wheelchair; quantifying an assistive power to be transmitted to the one or more driving wheel based on the commanded state of operation; and adding the assistive power to the one or more driving wheel with the at least one motor.

The present invention provides a modular system to integrate with existing motorized wheelchairs, allowing the wheelchair to autonomously track and follow a patient during physical therapy sessions and other mobility-related activities. This reduces the need for manual assistance, allowing the wheelchair to follow the patient without additional staff involvement. The invention comprises an add-on containing two adjustable arms that attach to the wheelchair's existing joystick or control stick and is equipped with a camera and software that autonomously tracks the patient's movements. The wheelchair's motion (forward, backward, left, right) is controlled by the module, based on real-time visual feedback from the camera targeting the patient.

A powered chair comprises a chair framework, which includes a pair of oppositely disposed armrests, a chair seat frame which is fixedly connected to the pair of armrests, a footrest, a backrest, a first linear actuator mounted upon the pair of armrests and operatively connected to the footrest, and a second linear actuator mounted upon the armrests and operatively connected to the backrest. When the first and second linear actuators are actuated, they can respectfully actuate or move the footrest and backrest, however, in view of the fact that the first and second linear actuators are not operatively connected to the chair seat frame, and in view of the additional fact that the chair seat frame is fixedly mounted upon the pair of armrests, the chair seat frame will remain stationary despite movements of the footrest and backrest, to any one of their multiple positions, as a result of the actuation of the first and second linear actuators.

To provide a system that includes a powered wheelchair, a user-worn exoskeleton and a master controller.SOLUTION: A master controller monitors independent movement of the powered wheelchair and the user-worn exoskeleton. The master controller prioritizes the movement of the powered wheelchair and the user-worn exoskeleton such that only one of the powered wheelchair and the user-worn exoskeleton will have the priority in completing the intended movement. The master controller may coordinate movement between the powered wheelchair and the user-worn exoskeleton so as to perform a plurality of predetermined programs; e.g., assist a user in sitting in the powered wheelchair, assist a user in standing up from a seating position when outside the powered wheelchair, and / or use the powered wheelchair as a guide for walking.SELECTED DRAWING: Figure 1A

A wheelchair having at least one force element that is elastically deformable, wherein deformation of the at least one force element becomes more and more intense with the application of increasing force, resulting in natural damping of the coupled-in force, which may be detected by a sensor such that the wheelchair according to the invention may be controlled in a targeted manner for fine movements as well as for faster, coarser movements.

A sprocket with a side flange for a toothed belt system, such as for mobile applications such as bicycles, electric bicycles or electric bicycles, electric wheelchairs, scooters, and the like, has a bi-directional debris removal element that directs debris (e.g., soil, dust, water, and the like) laterally outward from the sprocket. The sprocket has at least one side flange that is discontinuous along its length. For some sprockets having flanges on each side, the flanges alternate between two sides; the alternating side flanges may be in a symmetric arrangement or an asymmetric arrangement.