Patent ID: 7513481

Claim:
One-way valve of a sealed bag comprising: a valve seat ( 1 ) having a valve trough ( 12 ) with an opening at a first end, a plate ( 11 ) extends radially outwardly from the valve trough ( 12 ) combined to the sealed bag, a base formed at a second end has a central alignment hole ( 13 ), which is surrounded by a first plurality of air pores ( 14 ), further the first plurality of air pores are circumscribed by a projected annular ring ( 17 ), outer threads ( 18 ) formed around a circumference surface of the valve trough ( 12 ) above the plate ( 11 ), a stop ring ( 19 ) on top of the outer threads ( 18 ) has an outer diameter larger than the outer threads ( 18 ) with several apertures ( 191 ) formed equidistantly along a circumference of the stop ring ( 19 ); a diaphragm ( 2 ), which is a flexible film mounted inside the valve trough ( 12 ) with a bolt ( 21 ) embedded into the central alignment hole ( 13 ) of the base of valve trough; a stop device ( 5 ) having a first end props up a valve cap ( 4 ), a second end resists against the diaphragm ( 2 ), the stop device ( 5 ) is further corresponding to the projected annular ring ( 17 ) of the base of the valve trough ( 12 ); the stop device ( 5 ) is a transparent compressed seat having a truncated pipe ( 50 ), an outer diameter of the pipe is smaller than an inner diameter of the valve trough ( 12 ), an annular lip ( 51 ) is extended radially outwardly along a rim of a top opening of the pipe ( 50 ), a crossed and enforced rib ( 53 ) formed inside a bottom opening, a plurality of hollowed troughs ( 52 ) are arranged around a circumference of the truncated pipe ( 50 ); the valve cap ( 4 ) screwed to the outer thread ( 18 ) of the valve seat ( 1 ), a second plurality of air pores ( 41 ) formed through a top of the valve cap ( 4 ), several hooks ( 42 ) radially inwardly formed along a bottom rim of the valve cap ( 4 ), the hooks ( 42 ) are corresponding to and glided into the apertures ( 191 ) of the stop ring ( 19 ), and then screwed to the outer threads ( 18 ) of the valve seat ( 1 ); two different colored signs ( 192 , 193 ) marked on a top of the stop ring ( 19 ) of the valve seat ( 1 ), a top of the valve cap ( 4 ) has a through hole ( 44 ) corresponding to the different two signs ( 192 , 193 ).