Wind-Resistance Reducing Canopy Structure for Umbrella

Mobile carrier canopy assembly

Easy-to-drawing-in umbrella

Umbrella drawing-in by winding

Magnetic ring

Systems and methods for umbrella/parasol/personal sunshade closure

Two-stage collapsing device for umbrella

Superparamagnetic platelets field sensing devices

Sub-rack with housing for receiving plug-in modules

Superparamagnetic field sensing device

Umbrella having an elastomeric strap