CHONG WOO CO., LTD.
|CHONG WOO CO., LTD. Patent applications|
|Patent application number||Title||Published|
|20100314417||FOAM PRODUCTION PUMP NOT CAUSING CONTAMINATION OF CONTENTS - A foam production pump includes a button (||12-16-2010|
|20100288856||MANUAL SPRAY PUMP - Disclosed herein is a hand-operated spray pump configured to discharge a predetermined amount of content upon pressing a button and to suction a residual portion of the content in an end of a nozzle after discharging the content, the hand-operated spray pump including a housing forming the external appearance of the pump, a housing cap configured to seal the internal space of the housing from the outside, the closure configured to mount a container containing content in the housing, the closure being integrally formed with the housing cap, a stem configured to move upward and downward while being connected to the lower end of the button, the shaft configured to move upward and downward along the inside of the housing cap while being coupled to the outside of the stem, a piston configured to move upward and downward along the inner wall of the housing, a compression spring provided between a side protrusion formed at the upper end of the shaft at the side of the shaft and the housing cap, an opening and closing member configured to move upward into and downward from the vertical channel through the lower end of the stem such that the residual content in the nozzle is suctioned after pumping, and a sealing member mounted at the lower end of the stem in a state in which the sealing member is in tight contact with the outside of the opening and closing member inserted into the vertical channel.||11-18-2010|
|20090206108||SMALL-SIZED HAND-OPERATED SPRAY PUMP - Disclosed herein is a small-sized hand-operated spray pump. The spray pump includes a spray nozzle (||08-20-2009|
Patent applications by CHONG WOO CO., LTD.