Patent ID: 7665484

Claim:
A fluid coupling for use in a fuel supply system of a vehicle, comprising: a body formed with a fluid channel and formed of a material selected from the group consisting of polyamide, polyolefin, polysulfide, fluorocarbon resin, polyester, polyacetal, and polyketone; a pulsation absorber provided in the fluid channel, and arranged to deform in a same direction as fluid to flow in the fluid channel pulsates, and thereby to absorb pulsation of the fluid, said pulsation absorber being a bellows formed of a material resistant to fuel, the material being selected from the group consisting of a polyamide-based thermoplastic resin, a polyolefin-based thermoplastic resin, a fluorocarbon-based thermoplastic resin, a polyester-based thermoplastic resin, a polysulfide-based thermoplastic resin, a thermoplastic elastomer, a fluorocarbon-based rubber, a nitrile-based rubber, and an acrylic rubber; and a support which is fixed to said body of said fluid coupling by rotary welding, in which the bellows is jointed to the support air-tightly by welding, the support being plate-shaped and located perpendicular to an axis of the fluid channel, the support having an outer peripheral portion which is fixed to an inner wall of said body.