Patent ID: 9157433
Filing Date: 2015-10-13
Classification: A47C,F04B,F04D

Abstract:
1. A pressure-controlling appliance of an inflatable product, comprising: an inflatable body a pump mounted in the inflatable body; an inflation-deflation valve, wherein the pump is arranged to inflate and deflate the inflatable body through the inflation-deflation valve; an inflation-deflation controlling mechanism arranged to open and non-electromechanically close the inflation-deflation valve; and a pressure-controlling mechanism operating the inflation-deflation controlling mechanism based on the pressure in the inflatable body compared with a high or low reference pressure, the pressure-controlling mechanism comprising a moving bladder and a moving shaft configured such that when the pressure in the inflatable body is higher than the high reference pressure during inflation, the moving shaft moves in a first direction to operate the inflation-deflation controlling mechanism to close the inflation-deflation valve and to turn the pump off, and when the pressure in the inflatable body is lower than the low reference pressure during deflation, the moving shaft moves in a second direction to operate the inflation-deflation controlling mechanism to turn the pump off wherein the moving shaft is connected mechanically to the moving bladder and the inflation-deflation controlling mechanism.