Patent attributes
An adapter is provided for use in combination with a fuel cell having a closure formation. The adapter includes a fuel cell closure ring configured for engagement upon the closure formation of the fuel cell and including a top edge, a bottom edge, and a sidewall therebetween having an inner sidewall surface and an outer sidewall surface. At least one groove is defined by the inner sidewall and has at least one primary recess in communication with the at least one groove. At least one secondary recess is in communication with the groove. A metering valve has a body and at least one depending leg with a radially extending foot formation configured for engaging the groove. At least one supplemental locking lug is located on the leg and is constructed and arranged for engaging the at least one secondary recess.
