Bellows

Claim 1

A BELLOWS COMPRISING AN EXPANSIBLE UNITARY HOLLOW BODY MEMBER INCLUDING A PLURALITY OF NESTED ANNULAR BODY FOLDS WITH THE SPAN THEREOF HAVING A SINUOUS CROSS-SECTION; FIRST AND SECOND END FITTINGS COMPRISING FIRST AND SECOND CIRCULAR PLATES ATTACHED, RESPECTIVELY, TO OPPOSITE ENDS OF SAID BODY MEMBERS; FIRST AND SECOND ANNULAR DIE SURFACES, RESPECTIVELY, INTEGRAL WITH THE OPPOSING FACES OF SAID PLATES AND SUBSTANTIALLY COEXTENSIVE WITH THE SPAN OF SAID BODY FOLDS, SAID DIE SURFACES HAVING A SINUOUS CROSS-SECTIONAL CURVATURE COMPLEMENTARY WITH EACH OTHER AND WITH SAID BODY FOLDS; FIRST AND SECOND INTEGRAL INWARD EXTENSIONS OF SAID BODY MEMBER ADJACENT SAID FIRST AND SECOND END FITTINGS, RESPECTIVELY; AND FIRST AND SECOND MOUNTING MEANS, RESPECTIVELY, ON SAID FIRST AND SECOND END FITTINGS, INTERNALLY CONCENTRIC, RESPECTIVELY, WITH SAID FIRST AND SECOND DIE SURFACES, JOINED WITH SAID FIRST AND SECOND EXTENSIONS, RESPECTIVELY, AND THEREBY FORMING SEALS FOR BOTH ENDS OF SAID BODY MEMBER OUT OF AND INTERNALLY CONCENTRIC WITH THE SAID SPAN OF SAID ANNULAR BODY FOLDS.