Patent ID: 8079557
Filing Date: 2011-12-20
Classification: F16B

Abstract:
1. A suction cup device comprising: a cup forming unit adapted to confront a flat surface, and defining a central axis normal to the flat surface to cooperate therewith to create a volume-variable space, said cup forming unit having a liftable rod having a base end secured to said central portion, and a rod segment extending from said base end along the central axis and having an externally threaded region; a bracing shell member including a twistable cap member having a surrounding bottom wall which abuts against said circumferential abutment region, and which is in form of an abutting rim that is configured to be fit in said marginal cutout portion, and an inner tubular surface which surrounds the central axis and which has an internally threaded region threadedly engaged with said externally threaded region such that, as a result of a manually twisted movement of said twistable cap member, said rod segment is axially moved relative to said inner tubular surface, thereby imparting said base end with the pulling force, and such that, once the manually twisted movement of said twistable cap member is discontinued for reaching a predetermined value of the reduced pressure, said surrounding bottom wall is urged by the biasing force to abut against said circumferential abutment region, thereby ensuring the fluid-tight engagement of said marginal end with the flat surface.