Rubber tube with enclosed metal ring

Claim 1

A FLEXIBLE TUBE ASSEMBLY FOR CONNECTION TO A MACHINE PART OR THE LIKE HAVING AN OPENING AND A SHOULDER ABOUT THE OPENING SAID ASSEMBLY COMPRISING AS AN INTEGRAL RUBBER MEMBER A RESILIENT TUBULAR BODY, AN ANNULAR NECK ON ONE END OF SUCH B ODY, AND A SHEATH N THE NECK, THE SHEATH, IN THE NORMAL UNSTRESSED CONDITION OF THE RUBBER MEMBER, COMPRISING A PAIR OF RESILIENT RINGS DISPOSED IN CONFRONTING PARALLEL RELATION, SAID RINGS EACH HAVING SPACED INNER AND OUTER ANNULAR PERIPHERIES, ONE RING HAVING ITS ANNULAR PERIPHERIES INTEGRALLY CONNECTED ONE TO THE NECK AND THE OTHER TO ONE OF THE PERIPHERIES OF OTHER RING, AND A THIRD RING OF RIGID MATERIAL DISPOSED BETWEEN RINGS OF SAID PAIR AND NORMALLY HELD CAPTIVE THEREBY INDEPENDENTLY OF AND APART FROM ANY CONNECTION TO A MACHINE PART, ONE RING OF THE PAIR BEING ADAPTED FOR DEFORMATION OF ONE OF ITS PERIPHERIES AND BENDING OUT OF SAID CONFRONTING RELATION IN REMOVING AND REPLACING THE RIGID RING, SAID DEFORMABLE AND BENDABLE RING, WHEN SO BENT AND DEFORMED, BEING ADAPTED TO RETURN BY INHERENT RESILIENCY TO SAID CONFRONTING RING CAPTURING RELATION, THE NECK BEING RECEIVABLE WITHIN THE OPENING OF SUCH A MACHINE PART WITH ONE RING OF THE PAIR ENGAGED AGAINST THE SHOULDER IN THE PROVISION OF AN INTERLOCKING CONNECTION BETWEEN THE MACHINE PART AND THE ASSEMBLY AND THE RIGID RING BEING LARGER THAN SUCH MACHINE PART OPENING AND CAPABLE OF RETAINING ITS SHAPE TO PREVENT BEING DRAWN THROUGH SAID OPENING.