Patent ID: 7637737

Claim:
A retention mechanism, comprising: a first retention member disposed on a support base comprising a melting plate configured to hold a fuel element and engage a wick holder, the melting plate comprising a projecting capillary lobe, the capillary lobe including a first capillary wall extending from the melting plate, the wick holder having a wick and a base portion that includes a second capillary wall, the capillary lobe cooperatively engages the base portion to define a capillary space between the first and the second capillary walls to allow capillary flow of melted fuel from the melting plate to the wick through the capillary space; a second retention member disposed on a control unit having a light emitting system and configured to lockingly engage the first retention member; and a third retention member disposed on the support base, wherein the third retention member is configured to lockingly engage a fourth retention member disposed on a diffuser.