Seal and flexible gear type coupling

Claim 1

A COUPLING COMPRISING A HOLLOW, GENERALLY CYLINDRICAL MEMBER HAVING INWARDLY DIRECTED TEETH AND A COUNTERBORE IN ONE END THEREOF OUTWARD OF SAID TEETH, A GENERALLY CYLINDRICAL HUB HAVING OUTWARDLY DIRECTED CROWNED TEETH ADJACENT ONE END THEREOF AND ENGAGING SAID INWARDLY DIRECTED TEETH, A SEALING RING HAVING A SHAPE IN CROSS SECTION OF AN H WITH ONE OUTER LEG REMOVED, THE INNER LEGS THEREOF BEING ADJACENT THE OUTER PERIPHERY OF SAID HUB, SAID SEALING RING BEING DISPOSED IN SAID COUNTERBORE, THE BAR OF SAID H BEING CHAMFERED, AN O-SHAPED SEALING RING IN THE SPACE DEFINED BY THE OUTSIDE BOTTOM OF SAID BAR AND THE OUTER OUTWARDLY EXTENDING LEG OF SAID H-SHAPED RING, AN O-RING DISPOSED IN THE GROOVE DEFINED BY SAID INNER LEGS OF H-SHAPED SEALING RING, SAID INNER RING BEING SLIGHTLY GREATER IN CROSS SECTIONAL DIAMETER THAN THE DISTANCE FROM THE OUTER PERIPHERAL SURFACE OF SAID HUB TO THE BAR OF SAID H, AN OUTER PERIPHERAL GROOVE IN SAID CYLINDRICAL MEMBER IN THE SURFACE DEFINING THE COUNTERBORE THEREOF OUTWARDLY OF SAID H-SHAPED RING, AND A SNAP WASHER DISPOSED IN SAID GROOVE, SAID SNAP WASHER EXTENDING INWARDLY AND FORMING A STOP, PREVENTING A H-SHAPED RING FROM SLIDING OUTWARDLY.