Patent ID: 8365748
Filing Date: 2013-02-05
Classification: A45B

Abstract:
1. A cushioning device for umbrella, comprising: a first gear, a plate spring, a bolt, and a second gear, which are collectively arranged in a hollow chamber defined between a side cover and a casing; the umbrella having a central post having an outside surface forming a recessed and axially-extending slot, which receives and retains therein a toothed rack; the side cover and the casing being mounted to a runner of the umbrella, the second gear mating the rack of the central post; the first gear and the second gear mating each other, the first gear having a surface on which the plate spring and the bolt are mounted; wherein by rotating the bolt to different extents of tightness makes the plate spring to apply different depression forces to the first gear to change a frictional resistance between the first gear and the casing, the frictional resistance being transmitted through the second gear and the rack to the central post to form a cushioning resistance between the central post and the runner, making opening operation of the umbrella gentle and safe.