Pressure gauge connector means

Claim 1

A MEANS FOR QUICKLY CONNECTING AND DISCONNECTING A PRESSURE GAUGE WITH THE SPARK PLUG HOLE OF AN ENGINE CYLINDER AT A TIME WHEN THE CYLINDER IS SUBJECTED ONLY TO ATMOSPHERIC PRESSURE, SAID MEANS COMPRISING A TUBULAR BODY MEMBER HAVING THE INTERIOR THEREOF CONNECTED AT ONE END TO THE PRESSURE GAUGE AND HAVING AN AXIALLY COMPRESSIBLE, RADIALLY EXPANDABLE RESILIENT ELEMENT AND SUPPORTING MEANS THEREFOR MOUNTED AT THE OPPOSITE END THEREOF, SAID RESILIENT ELEMENT WHEN UNEXPANDED, BEING CAPABLE OF INSERTION INTO THE SPARK PLUG HOLE OF AN ENGINE CYLINDER TO WHICH THE PRESSURE GAUGE IS TO BE CONNECTED, AND MANUALLY OPERABLE MEANS INCLUDING A COMPONENT AXIALLY MOVABLE ON SAID BODY MEMBER EFFECTIVE IN COOPERATION WITH SAID SUPPORTING MEANS TO APPLY AXIAL COMPRESSION ON SAID RESILIENT ELEMENT WITH RESULTANT RADIAL EXPANSION OF SAID ELEMENT INTO PRESSURE TIGHT CONNECTION WITH THE SPARK PLUG HOLE INTO WHICH IT HAS BEEN INSERTED.