The invention relates to a powered wheelchair for transporting a person, comprising a seat frame for supporting the person, a pair of opposing main wheel assemblies, including a first main wheel assembly and a second main wheel assembly connected to the seat frame, and a third main wheel assembly arranged spaced apart from the pair of opposing main wheel assemblies and connected to said seat frame. The powered wheelchair further comprises a support wheel arrangement for supporting the powered wheelchair, said support wheel arrangement having a main beam and a front support wheel unit capable of being applied to a ground surface. The main beam is rotatably connected to said third main wheel assembly at a third connection point and connected via a guiding mechanism to the first main wheel assembly at a first connection point. The main beam has a first portion adapted to cooperate with said guiding mechanism when said first portion passes through a part of the guiding mechanism upon movement of the main beam relative to the guiding mechanism, to maintain said support wheel arrangement in a supporting position, in which the front support wheel unit is applied to the ground surface.

A wheelchair training system that comprises: a platform (110) that receives the wheelchair; two elongated parallel rollers (250) that are mounted on the platform (110) and are in tangential contact with two rear wheels (150, 160) of the wheelchair such that the two rollers (250) spin when the two rear wheels (150,160) rotate; and a spinning resistance control system (300) mounted on the platform (110) includes a magnet (310) that moves in different positions so that an overlapping area between a magnetic field generated from the magnet (310) and end of the two rollers (250) varies due to the magnet (310) being moved to the different positions. The magnetic field of the magnet (310) induces an eddy current in the two rollers (250) and generates a resistive force against rotation of the two wheels (150,160).

A handy type electric carriage comprises a vehicle body comprising a main vehicle frame, two driving wheels pivoted to the main vehicle frame at two sides, and two front wheel sets provided at two sides in front of the two driving wheels and pivoted to the main vehicle frame; and a footrest unit connected to the vehicle body, the footrest unit comprising a foot board connected to the main vehicle frame, and two first auxiliary wheels at left and right sides of the foot board. The main vehicle frame is situated in an unfolded or folded state due to a positioning mechanism. The front wheel sets and the main vehicle frame are pivoted in a manner of quick-release structure. Thereby, reduction in volume and easier to carry are provided for the handy type electric carriage, and providing easy and labor-saving shifting of the carriage is achieved.

The present invention provides an assembly having a collapsible wheelchair and an anti-rollback assembly to brake rotational movement of the wheelchair when a user is unseated, while simultaneously maintaining the ability of the wheelchair to collapse into a storage configuration. The anti-rollback assembly may include a brake bar pivotable between a lock state and an unlock state, a biasing member engaging the brake bar to exert a biasing force to move the brake bar into the lock state, and an actuator configured to engage a seat surface of the wheelchair to move the brake bar into the unlock state when the individual occupies the seat surface.

The invention relates to a powered wheelchair (100) for transporting a person, comprising a seat frame (40) for supporting the person, a pair of opposing main wheel assemblies (20, 30), including a first main wheel assembly (20) and a second main wheel assembly (30) connected to the seat frame (40), and a third main wheel assembly (50) arranged spaced apart from the pair of opposing main wheel assemblies (20, 30) and connected to said seat frame (40). The powered wheelchair further comprises a support wheel arrangement (10) for supporting the powered wheelchair (100), said support wheel arrangement (10) having a main beam (12) and a front support wheel unit (14) capable of being applied to a ground surface (95). The main beam (12) is rotatably connected to said third main wheel assembly (50) at a third connection point (C.sub.3) and connected via a guiding mechanism (80) to the first main wheel assembly (20) at a first connection point (C.sub.1). The main beam (12) has a first portion (16) adapted to cooperate with said guiding mechanism (80) when said first portion (16) passes through a part of the guiding mechanism (80) upon movement of the main beam (12) relative to the guiding mechanism (80), to maintain said support wheel arrangement in a supporting position (S), in which the front support wheel unit is applied to the ground surface (95).

An exemplary power driven vehicle has a take-apart frame comprising a front frame and a rear frame that are detachably and pivotally connected together. The front frame includes means for receiving at least one steerable wheel and a steering mechanism and means for receiving a seat, and the rear frame includes means for receiving at least two drive wheels. The vehicle also has at least one steerable wheel, a steering mechanism, and a seat connected to said front frame. At least two drive wheels are pivotally connected to said rear frame via a single axle. An electric motor is mounted on the rear frame and adapted to drive at least one of the drive wheels. A shroud partially covers the front frame and is fixedly connected thereto. At least one battery box is detachably mounted on the shroud and is in electrical communication with the electric motor. A locking and unlocking means of the vehicle is adapted to prevent, or alternatively allow, the disconnection of the rear frame from the front frame. The locking and unlocking means comprises a locking lever pivotally connected to the front frame. At least one groove or recess in the locking means engages the rear frame when the vehicle is in its normal position, thus preventing the rear frame from pivoting relative to the front frame. In an unlocking position the rear frame is allowed to pivot relative to the front frame, thereby allowing the rear from to be disconnected from the front frame.

The invention provides systems, kits, and methods for improved anti-rollback braking systems for personal conveyances such as wheelchairs. Unlike friction-based systems, the invention uses a pneumatic distribution system that uses pistons to engage an anti-rollback braking solution. The invention can be used by individuals with or without the assistance of another person because the braking system can engage automatically as a user gets out of their wheelchair. Systems of the invention can also provide reliable and more efficient manual brakes.