The Goodyear & Tire Rubber Company

Melvin C Badberg

Roy W Olsen

Thomas Goodsell Hutchins

James W Zachmeyer

A mandrel assembly for vulcanizing an elastomeric vent tube within the bore of a larger elastomeric filler neck hose having a complex, multi-curved configuration comprises an elastomeric flexible vent tube mandrel and a metallic filler neck mandrel having a groove oriented longitudinally along the curved surface of a depth for receiving a mandrel mounted vent tube therein such that a portion of the tube outside surface is in intimate contact with the bore surface of the filler neck hose when it is mounted on the filler neck mandrel. Upon vulcanization, the elastomeric mandrel is pulled out the vent tube and the filler neck hose is pulled off the filler neck mandrel with the vent tube being integrally joined to the filler neck hose bore at their contacting surfaces.

Mandrel assembly for vulcanizing a vent tube within the bore of a filler

A filler neck for mounting between a fueling port and a fuel tank provides fuel entry into the tank and venting of fuel vapor from the tank while being serviced from a fuel dispensing nozzle having vapor recovery means. The filler neck comprises a reinforced rubber filler hose having a bore diameter sufficient for receiving the nozzle while also providing a vent path for fuel vapor from the tank through a vent hose mounted inside the filler hose bore. The internally vented filler neck is adapted for crash-proof fuel tank assemblies and eliminates multiple connections necessary on externally vented tanks. A mandrel assembly is also disclosed for making the internally vented filler neck.

Growing community of inventors

Lincoln, NE, United States of America

Melvin C Badberg