Patent ID: 7467643
Filing Date: 2008-12-23
Classification: B60K,Y10T

Abstract:
1. A fitting for fuel tanks, comprising: a cylinder-shaped fitting body comprising a connecting end to be connected with a pipe, and a free end to be disposed freely inside a fuel tank; a flange disposed on an outer peripheral surface of the fitting body, and fastened to an opening periphery of an installation opening opened through the fuel tank; and a check valve disposed in the fitting body, being openable only in a direction heading from the connecting end of the fitting body to the free end thereof, and being closable for sealing a fuel, wherein the fitting body further comprises a fragile portion, which is joined to the flange and is shaped to have lower resistance to fracture than other portions of the fitting body in response to shock applied to the fitting body, the fitting body, the flange and the check valve are constructed and arranged to maintain a seal to prevent fuel from leaking from the fuel tank through the installation opening if the fragile portion fractures; at least part of the fitting body includes an outer layer and an inner layer, wherein the material of the outer layer is different from the material of the inner layer; and the fragile portion includes a thinned portion, which includes a groove that extends through the outer layer and into the inner layer.