The wheelchair includes a seating portion, body frames that support the seating portion, wheels that are rotatably supported by the body frames, an engaging portion, a left brake that brakes a left rear wheel, and a coupling portion that couples the engaging portion and the left brake to each other. The engaging portion is capable of switching between an engagement attitude for engaging a vehicle body member that forms an opening of a vehicle and a disengagement attitude for releasing the engagement with the vehicle body member. The coupling portion transmits the movement of the engaging portion to the left brake when the engaging portion makes an attitude change from the disengagement attitude to the engagement attitude. This operates the left brake when the attitude of the engaging portion switches from the disengagement attitude to the engagement attitude and brakes the left rear wheel.

A gravity reactive braking system comprises a housing connected to a structural element of a manually powered wheeled unit; a guide wheel having a first sector of radially protruding elements positionable in drivable contact with a main wheel periphery, and a second sector with a circular periphery of a shorter radial length than the first sector; a plate configured with a cammed surface; a height adjustment unit; and a follower element connected to a brake assembly cable and pivotably mounted onto the housing, for movably engaging a plate periphery. The guide wheel is rotatable in a rotational direction opposite to the main wheel's rotational direction when the radially protruding elements are positioned in drivable contact with the main wheel periphery following suitable manipulation of the height adjustment unit, and is indexable a predetermined angle until a desired region of the guide wheel is in contact with the main wheel periphery.

A reciprocating drive motion wheelchair is provided. The wheelchair device includes a low-profile wheelchair that utilizes push bars pivotally connected to the wheelchair frame and operably connected to a crank bar, which run parallel to the ground and connects back to a crank on each wheel. An additional pair of wheels is disposed rearward of the drive wheels and prevents the wheelchair from tipping, thus allowing the user to utilize the push bars to move the wheelchair quickly and easily.

Wheelchair drive boost apparatuses, drive assisted wheelchairs, and wheelchair drive boost systems are disclosed. A wheelchair drive boost apparatus includes a housing, a drive wheel including a drive axis that is movable with respect to the housing, a drive lever that engages with the drive wheel to cause the drive wheel to rotate, a transmission that couples the drive lever to the drive wheel, and an engager having a first position and a second position. The engager is configured to move the drive axis with respect to the housing.

A wheel lock device includes a base, a first arm, and a second arm. A base/first-arm mating portion includes a base/first-arm mating portion cross-sectional profile that changes along a length of the base/first-arm mating portion. A base/second-arm mating portion includes a base/second-arm mating portion cross-sectional profile that changes along a length of the base/second-arm mating portion. The first arm includes a first-arm/base mating portion that includes a first-arm/base mating portion cross-sectional profile that changes along a length of the first-arm/base mating portion in a direction toward the first-arm first aperture in a manner complementary to the base/first-arm mating portion cross-sectional profile. The second arm includes a second-arm/base mating portion that includes a second-arm/base mating portion cross-sectional profile that changes along a length of the second-arm/base mating portion in a direction toward the second-arm first aperture in a manner complementary to the base/second-arm mating portion cross-sectional profile.

A wheelchair that prevents the secondary transmission of germs, including a seat, a drive mechanism, antibacterial fabric, and a dirt-retaining board. The drive mechanism is symmetrically provided about the seat. The drive mechanism includes a frame, front wheels, rear wheels, and drive wheels. The frame is fixedly connected to the seat. The front wheels, the rear wheels, and the drive wheels are all rotated and set on the frame. The drive wheels are not coaxial with the front wheels and rear wheels and do not interfere with each other. Drive wheels are connected to the rear wheels by transmission. The dirt-retaining boards are installed on the rear wheels in coordination. The active wheels, the seat, the armrests, and the push handles are sleeved thereon with antimicrobial fabric.

The present disclosure illustrates a transport aid which can be quickly assembled, disassembled, and adjusted in width, and includes two support members, a chair seat and two horizontal assembly frames, wherein the horizontal assembly frames are disposed on left and right sides of the chair seat, respectively, and each includes a first quick connector assembled to a corresponding second quick connector of the chair seat, and ends of the two horizontal assembly frames are pivotally connected to corresponding support members, respectively, and other ends of the two horizontal assembly frames are assembled to each other through a quick packing connector for forming a horizontal bottom support member. As a result, the transport aid can be quickly disassembled into members for easy carry; furthermore, these members can be quickly assembled to a transport aid as a wheelchair, so that any person with disability can sit thereon and easily and comfortably be transported.

A brake system for a wheelchair comprises a lever assembly adapted to be movably connected to a wheelchair frame, the lever assembly having a handle portion for hand manipulation. A brake unit is adapted to be pivotally connected to relative to the wheelchair frame, the brake unit having a brake end adapted to contact the wheel. An actuator portion and a follower portion are in the brake system, the follower portion cooperating with the actuator portion for the brake unit to be selectively displaceable between at least two configurations, including a floating configuration in which the brake end contacts the wheel so as to automatically pivot into blocking contact with the wheel when the wheel rotates rearwardly, while allowing a forward rotation of the wheel, and a locking configuration in which the brake end is manually locked into blocking contact with the wheel.

There is provided a patient transport apparatus. The apparatus includes a height-adjustable assembly having a longitudinal axis. The apparatus includes a brake cable. The brake cable includes an elongate portion extending along the height-adjustable assembly and includes a slack portion. The apparatus includes a brake cable housing coupled to and axially offset from the height-adjustable assembly. The slack portion of the brake cable is enclosed within a hollow interior of the brake cable housing.

A front wheel and a rear wheel are to be provided at a grounding frame. A body frame is mounted on the grounding frame and includes a mount at which a seat is to be provided. A relative position between the grounding frame and the body frame in a height direction of a wheelchair is changed via a height adjustment mechanism. The height adjustment mechanism includes an adjustment pole, a pole reception, and a holding portion. The adjustment pole extends along the height direction and is mounted on one of the body frame and the grounding frame. The pole reception is mounted on another of the body frame and the grounding frame and is engaged with the adjustment pole slidably in the height direction. The holding portion is to hold not to relatively move the adjustment pole with respect to the pole reception.