A connector for tapered glass joints includes a first glass tubing section having a tapered sealing surface on an inner end surface thereof and threads on an outer surface of said end. A second glass tubing section has an end adapted to be telescoped into the end of said first tubing section, and a replaceable,...http://www.google.fr/patents/US4877270?utm_source=gb-gplus-shareBrevet US4877270 - Connector for tapered glass joints
