Lubricating assembly having a pressure venting seal

Claim 1

A PRESSURE VENTING SEALING ASSEMBLY ADAPTED TO RECEIVE LUBRICANT FROM THE DOME OF A HOUSING CONTAINING AN UPWARDLY AND OUTWARDLY PROJECTING STUD, COMPRISING A HOLLOW SUBSTANTIALLY GLOBULAR BODY FORMED FROM FLEXIBLE MATERIAL, PROVIDED AT THE BOTTOM THREREOF WITH AN ANNULAR FLANGE ADAPTED TO ENVELOP AND TO BE RIGIDLY SECURED TO SAID DOME, AND HAVING AT THE TOP THEREOF AN ANNULAR FLANGE ADAPTED TO FIT TIGHTLY ABOUT AND TO HAVE SEALING ENGAGEMENT WITH SAID STUD, SAID GOBULAR BODY HAVING A TOP WALL PROVIDED WITH AN INTEGRAL UPSTANDING PROJECTION CONTAINING A NORMALLY CLOSED LONGITUDINALLY EXTENDING SLIT ADAPTED WHEN OPENED TO COMMUNICATE WITH THE ATMOSPHERE AT THE UPPER FREE END OF SAID UPSTANDING PROJECTION AND ADAPTED TO COMMUNICATE WITH THE INTERIOR OF SAID GLOBULAR BODY, SAID SLIT BEING ADAPTED TO BE OPENED BY SAID LUBRICANT TO ESTABLISH COMMUNICATION WITH THE ATMOSPHERE AND THE INTERIOR OF SAID GLOBULAR BODY WHEN AN EXCESS QUANTITY OF LUBRICANT IS SUPPLIED UNDER PRESSURE TO SAID SLIT FROM SAID GLOBULR BODY, SAID UPSTANDING PROJECTION BEING CONICAL IN CONFIGURATION AND CONTAINING AT THE LOWER END OF SAID SLIT A RECESS IN COMMUNICATION WITH BOTH THE INTERIOR OF SAID GLOBULAR BODY AND SAID SLIT, AND A METAL VALVE ELEMENT MOUNTED WITHIN SAID RECESS AND HAVING PASSAGES FOR LUBRICANT THERETHROUGH IN COMMUNICATION WITH THE INTERIOR OF SAID GLOBULAR BODY AND NORMALLY CLOSED BY WALLS OF SAID RECESS.