Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filedfiledCritical
Priority to JP15161788UpriorityCriticalpatent/JPH0272873U/ja
Publication of JPH0272873UpublicationCriticalpatent/JPH0272873U/ja
Safety device providing valve seat and ball valve in hole of cock in closure and being omitted ball valve contacting to valve seat by way of twisting closure by pressure
Safety device providing valve seat and ball valve in hole of cock in closure and being omitted ball valve contacting to valve seat by way of twisting closure by pressure