Automatic locking and release device for a beach umbrella
Carrier attachment for invalid walkers
Convertible walker
Demountable stick
Foldable walker
Folding frame for use in umbrella or the like
Positioning structure for umbrella runner
Runner lock device for umbrella
Safety locking mechanism used on umbrella rods
Safety umbrella runner
Shortenable umbrella having a telescopic stick
Slim safety runner and multiple-fold umbrella thereof
Umbrella actuator
Umbrella frame device
Umbrella frame having folding ear structures
Umbrella operatively closed by directly pulling runner...
Umbrella structure
Umbrella with a mechanism for locking and releasing a slider
Umbrella with actuator sleeve for manual and automatic operation
Umbrella with an improved runner fastener