Holding device with multiple suction cup

Abstract

Provided is a holding device comprising a suction-type plate assembly including a plurality of resilient plates each having a concave shape and extended from its enlarged middle part, a shaft extended from the middle part and extended away from the plates, the shaft having external threads; a bracket passed by the shaft; a bell disposed between the bracket and the plate assembly, the bell passed by the shaft; and a nut. Pressing the plate assembly onto a surface and pressing the shaft onto the bell to urge its edge against an edge of an adjacent one of the plates will create a vacuum between the surface and the bell, and driving the nut to secure to the shaft to urge against the bracket and in turn to urge the bracket against the bell will maximize a sucking force created by the vacuum for adhering the plate assembly to the surface.

Dependencies are inferred from the claim text.