Rotary seal with serpentine configurations

Claim 1

A RING-LIKE SEALING DEVICE COMPRISING AN ANNULAR MEMBER FORMED THROUGHOUT OF RESILIENT FLOWABLE MATERIAL AND BEING ADAPTED TO PERFECT A SEAL BETWEEN A PAIR OF OPPOSED CONTIGUOUS SURFACES ONE OF WHICH ROTATES RELATIVE TO THE OTHER WHEN SAID RING-LIKE DEVICE IS PLACED WITHIN A CIRCULAR GROOVE FORMED IN ONE OF THE SURFACES ABOUT THE AXIS OF ROTATION OF THE RELATIVELY ROTATING SURFACE, SAID MEMBER IN ITS FREE FORM HAVING A RELATIVELY NARROW ANNULAR SEALING SURFACE AT ONE OF ITS SIDES EXTENDING ALONG ITS CIRCUMFERENTIAL LENGTH AND HAVING A RELATIVELY BROAD SEALING SURFACE AT ITS OPPOSITE SIDE EXTENDING ALONG ITS CIRCUMFERENTIAL LENGTH, SAID RELATIVELY NARROW ANNULAR SEALING SURFACE BEING SERPENTINE IN CONFIGURATION WHEREBY EACH SEGMENT OF SAID ANNULAR RELATIVELY NARROW SEALING SURFACE ALONG ITS LENGTH WILL MOVE BACK AND FORTH OVER THE SURFACE AGAINST WHICH IT WILL BEAR AND SEAL AS THE SURFACES ROTATE RELATIVE TO EACH OTHER, THE OUTER CONFINES OF SAID ANNULAR MEMBER CONSIDERED AXIALLY BEING IN THE SAME PLANE AT ALL POINTS ALONG ITS CIRCUMFERENCE, SAID RELATIVELY NARROW ANNULAR SEALING SURFACE BEING DISPOSED BETWEEN THE INNERMOST AND OUTERMOST SURFACES OF SAID ANNULAR MEMBER.