Abstract: A control valve structure for an oxygen machine uses a motor to link a disc to spin, which activates a pair of valve rods to open and close in sequence through rotation of the motor to control air flow.

Abstract: A maintenance tray of an oxygen machine is secured to a case of the oxygen machine and comprises a base board, a pair of handles, a pair of locators and fasteners. The base board comprises a front end and a rear end. The handles are formed at the front end of the base board, and the locators are formed at the rear end of the base board. The fasteners are used to secure the base board to the case so as to easily dissemble the parts for maintenance.

Abstract: An electric wheelchair frame includes a seat brace, a pair of connection rods, a pair of front suspension brackets, a pair of rear suspension brackets, and a pair of resilient members. A front section of either side of the seat brace is pivotally connected to the front suspension bracket. A rear section of either side of the seat brace is pivotally connected to the rear suspension bracket. A rear end of the front suspension bracket and a front end of the rear suspension bracket are pivotally connected to the connection rod, respectively. The resilient member has one end connected to the connection rod and another end connected to the rear suspension bracket.

Abstract: An electric wheelchair frame includes a seat brace, a pair of connection rods, a pair of front suspension brackets, a pair of rear suspension brackets, and a pair of resilient members. A front section of either side of the seat brace is pivotally connected to the front suspension bracket. A rear section of either side of the seat brace is pivotally connected to the rear suspension bracket. A rear end of the front suspension bracket and a front end of the rear suspension bracket are pivotally connected to the connection rod, respectively. The resilient member has one end connected to the connection rod and another end connected to the rear suspension bracket.

Abstract: A multi-function respiratory device includes a control unit, a humidifier, and an air supply unit, which is reconfigurable to alternatively provide humidified and non-humidified air. Both the control unit and the humidifier comprise a trough and an air passage at one side. The humidifier further comprises a strip and an air passage at another side. The air supply unit comprises a strip and an air passage at one side. The troughs comprise lugs inwardly corresponding to the strips. Each air passage corresponds to the others. Thus, the control unit, the humidifier, and the air supply unit are combined together to provide humidified air; the control unit and the air supply unit are combined together to provide regular air; the control unit and the humidifier are combined together to form a single humidifying device.

Abstract: A control valve structure for an oxygen machine uses a motor to link a disc to spin, which activates a pair of valve rods to open and close in sequence through rotation of the motor to control air flow.

Abstract: A compressor includes a motor, side covers, cylinder sets and fans. The motor includes a rotor and a coil at either side. The rotor is provided with blades secured in the coil. Each side cover comprises a side plate. The side plate has air inlets and a rim corresponding to the rotor of the motor. Each side cover is mounted on the motor with the rim engaging with the inner rim of the coil to form a guiding section. When the fan rotates, the blades of the rotor guide the wind towards the coil to radiate heat.

Abstract: An air purifier includes a filter, a compressor, an oxygen maker, an electromagnetic valve and a fan, and all of which are mounted in a case. The case has an inlet vent, an outlet vent, and a filtering member next to the outlet vent. The compressor comprises an air inlet and an air outlet. The air inlet of the compressor is connected to the filter, while the air outlet is connected to the oxygen maker. The oxygen maker comprises an air inlet connected to the air outlet of the compressor, an oxygen outlet connected to the electromagnetic valve, and a nitrogen outlet. The electromagnetic valve is connected to the fan. The fan is secured next to the outlet vent of the fan.

Abstract: A multi-function medical device includes a compressor, a vacuum, an oxygen maker, a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve. The compressor comprises an air inlet connected to the first electromagnetic valve and a filter, respectively. The first electromagnetic valve is then connected to the vacuum. An air outlet of the compressor is connected to the second electromagnetic valve and the third electromagnetic valve. The second electromagnetic valve is then connected to an air exhausting pipe. The third electromagnetic valve is connected to the oxygen maker and the air mixer, respectively. The device functions as an oxygen and vacuum machine, while the air mixer can be connected with different medical equipment for different purposes.

Abstract: An electric cart having a wireless control circuit device includes a governor, a transmitter, a receiver and a motor controller. The governor sends a signal to the transmitter. The transmitter transforms the signal into a digital signal (or an analog signal) and transmits a radio signal to the receiver. When receiving the radio signal, the receiver decodes the signal into an analog signal (or a digital signal) and transmits the signal to the motor controller to drive the motor. This design does not use a large amount of wiring, thus it is easy to disassemble.

Abstract: A revolving valve for an oxygen machine includes a motor, a cage, a motor secured in the cage, a valve linking to the motor and an air box secured on top of the cage. The valve has a semicircular recess. The air box comprises an air inlet on the top. The air box further comprises a main air passage, a main air outlet, a first secondary air passage, a first secondary air inlet, a second secondary air passage, and a second secondary air inlet, and they all are totally isolated from each other. The first secondary air inlet and the second secondary air inlet are next to the main air outlet. When the motor drives the valve to turn, the recess conducts the first secondary air inlet and the second secondary air inlet with the main air outlet in sequence.

Abstract: A revolving valve for an oxygen machine includes a motor, a cage, a motor secured in the cage, a valve linking to the motor and an air box secured on top of the cage. The valve has a semicircular recess. The air box comprises an air inlet on the top. The air box further comprises a main air passage, a main air outlet, a first secondary air passage, a first secondary air inlet, a second secondary air passage, and a second secondary air inlet, and they all are totally isolated from each other. The first secondary air inlet and the second secondary air inlet are next to the main air outlet. When the motor drives the valve to turn, the recess conducts the first secondary air inlet and the second secondary air inlet with the main air outlet in sequence.

Abstract: A supplementary wheel support for a motorized wheelchair to provide a supplementary support, includes a chassis, rockers, wheel supports, buffers, springs, auxiliary wheels and tilt-proof wheels; both side rods of the chassis being respectively pivoted with one end of the rocker; another end of the rocker being pivoted to the wheel support; a buffer being fixed between the chassis and the rocker; the wheel support being bend for its both ends a bending portion to define a triangle; both ends of the wheel support being respectively pivoted to the auxiliary wheel and the tilt-proof wheel; the bending portion of the wheel support being pivoted to another end of the rocker; both ends of the spring being respectively provided on the rocker and the wheel support; and the wheel support being driven by the auxiliary wheel to rise for the tilt-proof wheel to descend and grab the ground.