Molded bottle caps with integral pressure actuated sealing means

Claim 1

A RESEALABLE CAP MOLDED OF ELASTOMERIC MATERIAL COMPRISING A SKIRT SIZED TO FIT IN STOPPER FASHION INTO A NECK OF AN OPEN MOUTHED CONTAINERR, A TRANSVERSE WALL INTEGRALLY FORMED ACROSS A LOWER END OF THE SKIRT FORMING A CLOSURE FOR THE CONTAINER AND A MEANS FOR APPLYING A RADIAL FORCE TO SPREAD THE SKIRT FOR GRIP-LOCKING AGAINST SAID CONTAINER NECK, SAID TRANSVERSE WALL BEING MOLDED INTO A NORMALLY CONVEX CONFIGURATION AND HAVING A PERIPHERAL GROOVE FORMING A FLEXIBLE WEB BETWEEN THE SKIRT AND TRANSVERSE WALL FACILITATING DEFLECTION OF THE LATTER ON THE APPLICATION OF FINGER PRESSURE INTO A CONCAVE CONFIGURATION APPLYING SAID RADIAL FORCE TO THE SKIRT, SAID TRANSVERSE WALL BEING SECTIONALIZED INTO A CIRCULAR CENTRAL AREA INTERCONNECTED BY A SECOND WEB TO AN OUTER ANNULAR AREA, SAID SECOND WEB BEING RELATIVELY THIN WITH RESPECT TO THE THICKNESS OF SAID CIRCULAR CENTRAL AND OUTER ANNULAR AREAS PROVIDING AN ANNULUS OF FLEXURE TO EFFECT A LOCKING OF SAID TRANSVERSE WALL IN SAID CONCAVE CONFIGURATION, MEANS INTEGRALLY FORMED IN SAID TRANSVERSE WALL FOR PREDETERMINING THE CONTOUR OF SAID CONCAVE CONFIGURATION TO PROVIDE SUFFICIENT RADIAL FORCE FOR SAID GRIP-LOCKING, AND FINGER GRIP MEANS PROJECTING UPWARDLY FROM SAID TRANSVERSE WALL FOR MANIPULATING THE LATTER TO RETURN TO SAID CONVEX CONFIGURATION FOR RELEASE AND REMOVAL OF THE CAP FROM THE CONTAINER NECK.