20130313219 | SEALING UNIT FOR SEALING OPENING WITH SMOOTH INNER PERIPHERY - A sealing unit for sealing a jar includes an inner cap having a flange and an outer groove is defined in the outer periphery of the flange. A resilient ring has a bent portion which is engaged with the outer groove. An outer cap has an annular recess in the underside thereof and the flange of the inner cap is engaged with the annular recess. The outer cap has an inner groove defined in the inner wall thereof and the resilient ring is engaged with the inner groove. A linking member extends through the outer cap and is connected to the inner cap. A lever is pivotably connected to the linking member so as to drive the linking member which moves the inner cap upward to squeeze the resilient ring to be deformed so as to seal the smooth inner periphery of the opening of the jar. | 11-28-2013 |