专利名称：Drip stop plug发明人：Michael K. Roll申请号：US08/121441申请日：19930913公开号：US05318075A公开日：19940607
摘要：A water soluble drip stop plug for stopping water flow in a pipe and fordissolving after a predetermined time after water flow is restored. The plug is a cupshaped water soluble plug which has tapered sides to fit snugly into the inside diameterof pipes. The end wall of the plug is designed to dissolve in a predetermined time aftercontact with fluids. The end wall of the plug has a different wall thickness than the sidewall of the plug. A preferred embodiment has an end wall with a portion of reduced wallthickness which allows it to break away quicker than the remainder of the end wall.Additionally, the drip stop plug may have reinforced side walls to provide support forplugs of larger diameter.
申请人：ROLL; MICHAEL K.
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