US Patent 7546908 Wheel assembly

A wheel assembly has a wheel bracket, a connecting base, a wheel and a brake device. The wheel bracket has a holding slot. The connecting base is rotatably mounted on the wheel bracket. The brake device is mounted on the wheel bracket, corresponds to the wheel and has a brake plate and a pushbutton. The brake plate is pivotally connected to the wheel bracket and has a first end, a second end and a securing tab. The first end corresponds to the wheel, and the second end corresponds to the connecting base. The securing tab is formed on the brake plate and is securely held inside the holding slot in the wheel brake to pivotally connect the brake plate to the wheel bracket. The pushbutton is pivotally attached to the wheel bracket and corresponds to the first end of the brake plate.