Patent ID: 6913162
Filing Date: 2005-07-05
Classification: B60K,Y10S

Abstract:
1. A tank cap apparatus, comprising: a tank cap opening member having an opening engagement element and a sealing surface; a cap constructed and arranged to close the tank opening member through rotation about a rotation axis, the cap including a cap engagement element for engaging the opening engagement element; and a gasket interposed between the cap and the sealing surface of the tank opening member to seal a gap therebetween; wherein the cap engagement element is engaged with the opening engagement element by rotation of the cap by 180° or less; and the cap has a tilt-preventing rib formed on an outer circumferential portion thereof between the cap engagement element and the gasket, wherein at least a nortion of the tilt-preventing rib is angularly spaced from the cap engagement element such that the portion of the tilt preventing rib is not axially aligned with the can engagement element, and the tilt-preventing rib is constructed and arranged to come into contact with an inner wall of the tank opening member, thereby preventing the cap from tilting upon application of a cap-tilting force.